/usr/share/tcltk/tklib0.5/plotchart/plotpriv.tcl is in tklib 0.5-3.
This file is owned by root:root, with mode 0o644.
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2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 | # plotpriv.tcl --
# Facilities to draw simple plots in a dedicated canvas
#
# Note:
# This source file contains the private functions.
# It is the companion of "plotchart.tcl"
#
# WidthCanvas --
# Return the width of the canvas
# Arguments:
# w Name of the canvas
# Result:
# Width in pixels
#
proc ::Plotchart::WidthCanvas {w} {
set width [winfo width $w]
if { $width < 10 } {
set width [$w cget -width]
}
return $width
}
# HeightCanvas --
# Return the height of the canvas
# Arguments:
# w Name of the canvas
# Result:
# Height in pixels
#
proc ::Plotchart::HeightCanvas {w} {
set height [winfo height $w]
if { $height < 10 } {
set height [$w cget -height]
}
return $height
}
# SavePlot --
# Save the plot/chart to a PostScript file (using default options)
# Arguments:
# w Name of the canvas
# filename Name of the file to write
# args Optional format (-format name)
# Result:
# None
# Side effect:
# A (new) PostScript file
#
proc ::Plotchart::SavePlot { w filename args } {
if { [llength $args] == 0 } {
#
# Wait for the canvas to become visible - just in case.
# Then write the file
#
update idletasks
$w postscript -file $filename
} else {
if { [llength $args] == 2 && [lindex $args 0] == "-format" } {
package require Img
set format [lindex $args 1]
#
# This is a kludge:
# Somehow tkwait does not always work (on Windows XP, that is)
#
raise [winfo toplevel $w]
# tkwait visibility [winfo toplevel $w]
after 2000 {set ::Plotchart::waited 0}
vwait ::Plotchart::waited
set img [image create photo -data $w -format window]
$img write $filename -format $format
} else {
return -code error "Unknown option: $args - must be: -format img-format"
}
}
}
# MarginsRectangle --
# Determine the margins for a rectangular plot/chart
# Arguments:
# w Name of the canvas
# notext Number of lines of text to make room for at the top
# (default: 2.0)
# text_width Number of characters to be displayed at most on left
# (default: 8)
# Result:
# List of four values
#
proc ::Plotchart::MarginsRectangle { w {notext 2.0} {text_width 8}} {
variable config
set pxmin [expr {10*$text_width}]
if { $pxmin < $config($w,margin,left) } {
set pxmin $config($w,margin,left)
}
set pymin [expr {int(14*$notext)}]
if { $pymin < $config($w,margin,top) } {
set pymin $config($w,margin,top)
}
set pxmax [expr {[WidthCanvas $w] - $config($w,margin,right)}]
set pymax [expr {[HeightCanvas $w] - $config($w,margin,bottom)}]
return [list $pxmin $pymin $pxmax $pymax]
}
# MarginsCircle --
# Determine the margins for a circular plot/chart
# Arguments:
# w Name of the canvas
# Result:
# List of four values
#
proc ::Plotchart::MarginsCircle { w } {
set pxmin 80
set pymin 30
set pxmax [expr {[WidthCanvas $w] - 80}]
set pymax [expr {[HeightCanvas $w] - 30}]
#set pxmax [expr {[$w cget -width] - 80}]
#set pymax [expr {[$w cget -height] - 30}]
set dx [expr {$pxmax-$pxmin+1}]
set dy [expr {$pymax-$pymin+1}]
if { $dx < $dy } {
set pyminn [expr {($pymin+$pymax-$dx)/2}]
set pymaxn [expr {($pymin+$pymax+$dx)/2}]
set pymin $pyminn
set pymax $pymaxn
} else {
set pxminn [expr {($pxmin+$pxmax-$dy)/2}]
set pxmaxn [expr {($pxmin+$pxmax+$dy)/2}]
set pxmin $pxminn
set pxmax $pxmaxn
}
return [list $pxmin $pymin $pxmax $pymax]
}
# Margins3DPlot --
# Determine the margins for a 3D plot
# Arguments:
# w Name of the canvas
# Result:
# List of four values
#
proc ::Plotchart::Margins3DPlot { w } {
variable scaling
set yfract 0.33
set zfract 0.50
if { [info exists scaling($w,yfract)] } {
set yfract $scaling($w,yfract)
} else {
set scaling($w,yfract) $yfract
}
if { [info exists scaling($w,zfract)] } {
set zfract $scaling($w,zfract)
} else {
set scaling($w,zfract) $zfract
}
set yzwidth [expr {(-120+[WidthCanvas $w])/(1.0+$yfract)}]
set yzheight [expr {(-60+[HeightCanvas $w])/(1.0+$zfract)}]
#set yzwidth [expr {(-120+[$w cget -width])/(1.0+$yfract)}]
#set yzheight [expr {(-60+[$w cget -height])/(1.0+$zfract)}]
set pxmin [expr {60+$yfract*$yzwidth}]
set pxmax [expr {[WidthCanvas $w] - 60}]
#set pxmax [expr {[$w cget -width] - 60}]
set pymin 30
set pymax [expr {30+$yzheight}]
return [list $pxmin $pymin $pxmax $pymax]
}
# SetColours --
# Set the colours for those plots that treat them as a global resource
# Arguments:
# w Name of the canvas
# args List of colours to be used
# Result:
# None
#
proc ::Plotchart::SetColours { w args } {
variable scaling
set scaling($w,colours) $args
}
# CycleColours --
# create cycling colours for those plots that treat them as a global resource
# Arguments:
# colours List of colours to be used. An empty list will activate to default colours
# nr_data Number of data records
# Result:
# List of 'nr_data' colours to be used
#
proc ::Plotchart::CycleColours { colours nr_data } {
if {![llength ${colours}]} {
# force to most usable default colour list
set colours {green blue red cyan yellow magenta}
}
if {[llength ${colours}] < ${nr_data}} {
# cycle through colours
set init_colours ${colours}
set colours {}
set pos 0
for {set nr 0} {${nr} < ${nr_data}} {incr nr} {
lappend colours [lindex ${init_colours} ${pos}]
incr pos
if {[llength ${init_colours}] <= ${pos}} {
set pos 0
}
}
if {[string equal [lindex ${colours} 0] [lindex ${colours} end]]} {
# keep first and last colour different from selected colours
# this will /sometimes fail in cases with only one/two colours in list
set colours [lreplace ${colours} end end [lindex ${colours} 1]]
}
}
return ${colours}
}
# DataConfig --
# Configure the data series
# Arguments:
# w Name of the canvas
# series Name of the series in question
# args Option and value pairs
# Result:
# None
#
proc ::Plotchart::DataConfig { w series args } {
variable data_series
variable options
variable option_keys
variable option_values
foreach {option value} $args {
set idx [lsearch $options $option]
if { $idx < 0 } {
return -code error "Unknown or invalid option: $option (value: $value)"
} else {
set key [lindex $option_keys $idx]
set idx [lsearch $option_values $key]
set values [lindex $option_values [incr idx]]
if { $values != "..." } {
if { [lsearch $values $value] < 0 } {
return -code error "Unknown or invalid value: $value for option $option - $values"
}
}
set data_series($w,$series,$key) $value
}
}
}
# ScaleIsometric --
# Determine the scaling for an isometric plot
# Arguments:
# w Name of the canvas
# xmin Minimum x coordinate
# ymin Minimum y coordinate
# xmax Maximum x coordinate
# ymax Maximum y coordinate
# (default: 1.5)
# Result:
# None
# Side effect:
# Array with scaling parameters set
#
proc ::Plotchart::ScaleIsometric { w xmin ymin xmax ymax } {
variable scaling
set pxmin $scaling($w,pxmin)
set pymin $scaling($w,pymin)
set pxmax $scaling($w,pxmax)
set pymax $scaling($w,pymax)
set dx [expr {($xmax-$xmin)/($pxmax-$pxmin)}]
set dy [expr {($ymax-$ymin)/($pymax-$pymin)}]
#
# Which coordinate is dominant?
#
if { $dy < $dx } {
set yminn [expr {0.5*($ymax+$ymin) - 0.5 * $dx * ($pymax-$pymin)}]
set ymaxn [expr {0.5*($ymax+$ymin) + 0.5 * $dx * ($pymax-$pymin)}]
set ymin $yminn
set ymax $ymaxn
} else {
set xminn [expr {0.5*($xmax+$xmin) - 0.5 * $dy * ($pxmax-$pxmin)}]
set xmaxn [expr {0.5*($xmax+$xmin) + 0.5 * $dy * ($pxmax-$pxmin)}]
set xmin $xminn
set xmax $xmaxn
}
worldCoordinates $w $xmin $ymin $xmax $ymax
}
# PlotHandler --
# Handle the subcommands for an XY plot or chart
# Arguments:
# type Type of plot/chart
# w Name of the canvas
# command Subcommand or method to run
# args Data for the command
# Result:
# Whatever returned by the subcommand
#
proc ::Plotchart::PlotHandler { type w command args } {
variable methodProc
if { [info exists methodProc($type,$command)] } {
eval $methodProc($type,$command) $w $args
} else {
return -code error "No such method - $command"
}
}
# DrawMask --
# Draw the stuff that masks the data lines outside the graph
# Arguments:
# w Name of the canvas
# Result:
# None
# Side effects:
# Several polygons drawn in the background colour
#
proc ::Plotchart::DrawMask { w } {
variable scaling
variable config
set width [expr {[WidthCanvas $w] + 1}]
set height [expr {[HeightCanvas $w] + 1}]
set colour $config($w,background,outercolor)
set pxmin [expr {$scaling($w,pxmin)-1}]
set pxmax $scaling($w,pxmax)
set pymin [expr {$scaling($w,pymin)-1}]
set pymax $scaling($w,pymax)
$w create rectangle 0 0 $pxmin $height -fill $colour -outline $colour -tag mask
$w create rectangle 0 0 $width $pymin -fill $colour -outline $colour -tag mask
$w create rectangle 0 $pymax $width $height -fill $colour -outline $colour -tag mask
$w create rectangle $pxmax 0 $width $height -fill $colour -outline $colour -tag mask
$w lower mask
}
# DrawScrollMask --
# Draw the masking rectangles for a time or Gantt chart
# Arguments:
# w Name of the canvas
# Result:
# None
# Side effects:
# Several polygons drawn in the background colour, with appropriate
# tags
#
proc ::Plotchart::DrawScrollMask { w } {
variable scaling
variable config
set width [expr {[WidthCanvas $w] + 1}]
set height [expr {[HeightCanvas $w] + 1}]
set colour $config($w,background,outercolor)
set pxmin [expr {$scaling($w,pxmin)-1}]
set pxmax $scaling($w,pxmax)
set pymin [expr {$scaling($w,pymin)-1}]
set pymax $scaling($w,pymax)
$w create rectangle 0 0 $pxmin $height -fill $colour -outline $colour -tag vertmask
$w create rectangle 0 0 $width $pymin -fill $colour -outline $colour -tag horizmask
$w create rectangle 0 $pymax $width $height -fill $colour -outline $colour -tag horizmask
$w create rectangle $pxmax 0 $width $height -fill $colour -outline $colour -tag vertmask
$w create rectangle 0 0 $pxmin $pymin -fill $colour -outline $colour -tag {topmask top}
$w create rectangle $pxmax 0 $width $pymin -fill $colour -outline $colour -tag {topmask top}
$w lower topmask
$w lower horizmask
$w lower vertmask
}
# DrawTitle --
# Draw the title
# Arguments:
# w Name of the canvas
# title Title to appear above the graph
# Result:
# None
# Side effects:
# Text string drawn
#
proc ::Plotchart::DrawTitle { w title } {
variable scaling
variable config
set width [WidthCanvas $w]
#set width [$w cget -width]
set pymin $scaling($w,pymin)
$w create text [expr {$width/2}] 3 -text $title \
-tags title -font $config($w,title,font) \
-fill $config($w,title,textcolor) -anchor $config($w,title,anchor)
}
# DrawData --
# Draw the data in an XY-plot
# Arguments:
# w Name of the canvas
# series Data series
# xcrd Next x coordinate
# ycrd Next y coordinate
# Result:
# None
# Side effects:
# New data drawn in canvas
#
proc ::Plotchart::DrawData { w series xcrd ycrd } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ycrd == "" } {
unset data_series($w,$series,x)
return
}
#
# Draw the line piece
#
set colour "black"
if { [info exists data_series($w,$series,-colour)] } {
set colour $data_series($w,$series,-colour)
}
set type "line"
if { [info exists data_series($w,$series,-type)] } {
set type $data_series($w,$series,-type)
}
set filled "no"
if { [info exists data_series($w,$series,-filled)] } {
set filled $data_series($w,$series,-filled)
}
set fillcolour white
if { [info exists data_series($w,$series,-fillcolour)] } {
set fillcolour $data_series($w,$series,-fillcolour)
}
foreach {pxcrd pycrd} [coordsToPixel $w $xcrd $ycrd] {break}
if { [info exists data_series($w,$series,x)] } {
set xold $data_series($w,$series,x)
set yold $data_series($w,$series,y)
foreach {pxold pyold} [coordsToPixel $w $xold $yold] {break}
if { $filled ne "no" } {
if { $filled eq "down" } {
set pym $scaling($w,pymax)
} else {
set pym $scaling($w,pymin)
}
$w create polygon $pxold $pym $pxold $pyold $pxcrd $pycrd $pxcrd $pym \
-fill $fillcolour -outline {} -tag [list data data_$series]
}
if { $type == "line" || $type == "both" } {
$w create line $pxold $pyold $pxcrd $pycrd \
-fill $colour -tag [list data data_$series]
}
}
if { $type == "symbol" || $type == "both" } {
set symbol "dot"
if { [info exists data_series($w,$series,-symbol)] } {
set symbol $data_series($w,$series,-symbol)
}
DrawSymbolPixel $w $series $pxcrd $pycrd $symbol $colour [list "data" data_$series]
}
$w lower data
set data_series($w,$series,x) $xcrd
set data_series($w,$series,y) $ycrd
}
# DrawStripData --
# Draw the data in a stripchart
# Arguments:
# w Name of the canvas
# series Data series
# xcrd Next x coordinate
# ycrd Next y coordinate
# Result:
# None
# Side effects:
# New data drawn in canvas
#
proc ::Plotchart::DrawStripData { w series xcrd ycrd } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ycrd == "" } {
unset data_series($w,$series,x)
return
}
if { $xcrd > $scaling($w,xmax) } {
set xdelt $scaling($w,xdelt)
set xmin $scaling($w,xmin)
set xmax $scaling($w,xmax)
set xminorg $xmin
while { $xmax < $xcrd } {
set xmin [expr {$xmin+$xdelt}]
set xmax [expr {$xmax+$xdelt}]
}
set ymin $scaling($w,ymin)
set ymax $scaling($w,ymax)
worldCoordinates $w $xmin $ymin $xmax $ymax
DrawXaxis $w $xmin $xmax $xdelt
foreach {pxminorg pyminorg} [coordsToPixel $w $xminorg $ymin] {break}
foreach {pxmin pymin} [coordsToPixel $w $xmin $ymin] {break}
$w move data [expr {$pxminorg-$pxmin+1}] 0
}
DrawData $w $series $xcrd $ycrd
}
# DrawLogData --
# Draw the data in an X-logY-plot
# Arguments:
# w Name of the canvas
# series Data series
# xcrd Next x coordinate
# ycrd Next y coordinate
# Result:
# None
# Side effects:
# New data drawn in canvas
#
proc ::Plotchart::DrawLogData { w series xcrd ycrd } {
DrawData $w $series $xcrd [expr {log10($ycrd)}]
}
# DrawInterval --
# Draw the data as an error interval in an XY-plot
# Arguments:
# w Name of the canvas
# series Data series
# xcrd X coordinate
# ymin Minimum y coordinate
# ymax Maximum y coordinate
# ycentr Central y coordinate (optional)
# Result:
# None
# Side effects:
# New interval drawn in canvas
#
proc ::Plotchart::DrawInterval { w series xcrd ymin ymax {ycentr {}} } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ymin == "" || $ymax == "" } {
return
}
#
# Draw the line piece
#
set colour "black"
if { [info exists data_series($w,$series,-colour)] } {
set colour $data_series($w,$series,-colour)
}
foreach {pxcrd pymin} [coordsToPixel $w $xcrd $ymin] {break}
foreach {pxcrd pymax} [coordsToPixel $w $xcrd $ymax] {break}
if { $ycentr != "" } {
foreach {pxcrd pycentr} [coordsToPixel $w $xcrd $ycentr] {break}
}
#
# Draw the I-shape (note the asymmetry!)
#
$w create line $pxcrd $pymin $pxcrd $pymax \
-fill $colour -tag [list data data_$series]
$w create line [expr {$pxcrd-3}] $pymin [expr {$pxcrd+4}] $pymin \
-fill $colour -tag [list data data_$series]
$w create line [expr {$pxcrd-3}] $pymax [expr {$pxcrd+4}] $pymax \
-fill $colour -tag [list data data_$series]
if { $ycentr != "" } {
set symbol "dot"
if { [info exists data_series($w,$series,-symbol)] } {
set symbol $data_series($w,$series,-symbol)
}
DrawSymbolPixel $w $series $pxcrd $pycentr $symbol $colour [list data data_$series]
}
$w lower data
}
# DrawSymbolPixel --
# Draw a symbol in an xy-plot, polar plot or stripchart
# Arguments:
# w Name of the canvas
# series Data series
# pxcrd Next x (pixel) coordinate
# pycrd Next y (pixel) coordinate
# symbol What symbol to draw
# colour What colour to use
# tag What tag to use
# Result:
# None
# Side effects:
# New symbol drawn in canvas
#
proc ::Plotchart::DrawSymbolPixel { w series pxcrd pycrd symbol colour tag } {
variable data_series
variable scaling
set pxmin [expr {$pxcrd-4}]
set pxmax [expr {$pxcrd+4}]
set pymin [expr {$pycrd-4}]
set pymax [expr {$pycrd+4}]
switch -- $symbol {
"plus" { $w create line $pxmin $pycrd $pxmax $pycrd \
$pxcrd $pycrd $pxcrd $pymin \
$pxcrd $pymax \
-fill $colour -tag $tag \
-capstyle projecting
}
"cross" { $w create line $pxmin $pymin $pxmax $pymax \
$pxcrd $pycrd $pxmax $pymin \
$pxmin $pymax \
-fill $colour -tag $tag \
-capstyle projecting
}
"circle" { $w create oval $pxmin $pymin $pxmax $pymax \
-outline $colour -tag $tag
}
"dot" { $w create oval $pxmin $pymin $pxmax $pymax \
-outline $colour -fill $colour -tag $tag
}
"up" { $w create polygon $pxmin $pymax $pxmax $pymax \
$pxcrd $pymin \
-outline $colour -fill {} -tag $tag
}
"upfilled" { $w create polygon $pxmin $pymax $pxmax $pymax \
$pxcrd $pymin \
-outline $colour -fill $colour -tag $tag
}
"down" { $w create polygon $pxmin $pymin $pxmax $pymin \
$pxcrd $pymax \
-outline $colour -fill {} -tag $tag
}
"downfilled" { $w create polygon $pxmin $pymin $pxmax $pymin \
$pxcrd $pymax \
-outline $colour -fill $colour -tag $tag
}
}
}
# DrawTimeData --
# Draw the data in an TX-plot
# Arguments:
# w Name of the canvas
# series Data series
# time Next date/time value
# xcrd Next x coordinate (vertical axis)
# Result:
# None
# Side effects:
# New data drawn in canvas
#
proc ::Plotchart::DrawTimeData { w series time xcrd } {
DrawData $w $series [clock scan $time] $xcrd
}
# DetermineMedian --
# Determine the median of a sorted list of values
# Arguments:
# values Sorted values
# Result:
# Median value
#
proc ::Plotchart::DetermineMedian { values } {
set length [llength $values]
if { $length == 1 } {
set median [lindex $values 0]
} elseif { $length % 2 == 1 } {
set median [lindex $values [expr {$length/2}]]
} else {
set median1 [lindex $values [expr {$length/2-1}]]
set median2 [lindex $values [expr {$length/2}]]
set median [expr {($median1 + $median2)/2.0}]
}
return $median
}
# DrawBoxWhiskers --
# Draw the data in an XY-plot as box-and-whiskers
# Arguments:
# w Name of the canvas
# series Data series
# xcrd Next x coordinate or a list of coordinates
# ycrd Next y coordinate or a list of coordinates
# Result:
# None
# Side effects:
# New data drawn in canvas
# Note:
# We can do either a horizontal box (one y value) or
# a vertical box (one x value). Not both
#
proc ::Plotchart::DrawBoxWhiskers { w series xcrd ycrd } {
variable data_series
variable scaling
#
# Check orientation
#
set type "?"
if { [llength $xcrd] > 1 && [llength $ycrd] == 1 } {
set type h
}
if { [llength $xcrd] == 1 && [llength $ycrd] > 1 } {
set type v
}
if { $type == "?" } {
return -code error "Use either a list of x values or a list of y values - not both"
}
#
# Determine the quartiles
#
if { $type == "h" } {
set data [lsort -real -increasing $xcrd]
} else {
set data [lsort -real -increasing $ycrd]
}
set length [llength $data]
if { $length % 2 == 0 } {
set lowerhalf [expr {($length-1)/2}]
set upperhalf [expr {($length+1)/2}]
} else {
set lowerhalf [expr {$length/2-1}]
set upperhalf [expr {$length/2+1}]
}
set quartile2 [DetermineMedian $data]
set quartile1 [DetermineMedian [lrange $data 0 $lowerhalf]]
set quartile3 [DetermineMedian [lrange $data $upperhalf end]]
set hspread [expr {$quartile3-$quartile1}]
set lower [expr {$quartile1-1.5*$hspread}]
set upper [expr {$quartile3+1.5*$hspread}]
set outlower [expr {$quartile1-3.0*$hspread}]
set outupper [expr {$quartile3+3.0*$hspread}]
set minimum {}
set maximum {}
foreach value $data {
if { $value >= $lower } {
if { $minimum == {} || $minimum > $value } {
set minimum $value
}
}
if { $value <= $upper } {
if { $maximum == {} || $maximum < $value } {
set maximum $value
}
}
}
#
# Draw the box and whiskers
#
set colour "black"
if { [info exists data_series($w,$series,-colour)] } {
set colour $data_series($w,$series,-colour)
}
set filled "no"
if { [info exists data_series($w,$series,-filled)] } {
set filled $data_series($w,$series,-filled)
}
set fillcolour white
if { [info exists data_series($w,$series,-fillcolour)] } {
set fillcolour $data_series($w,$series,-fillcolour)
}
set boxwidth 10
if { [info exists data_series($w,$series,-boxwidth)] } {
set boxwidth $data_series($w,$series,-boxwidth)
}
if { $type == "h" } {
foreach {pxcrdm pycrd1} [coordsToPixel $w $minimum $ycrd] {break}
foreach {pxcrd1 pycrd2} [coordsToPixel $w $quartile1 $ycrd] {break}
foreach {pxcrd2 pycrd2} [coordsToPixel $w $quartile2 $ycrd] {break}
foreach {pxcrd3 pycrd2} [coordsToPixel $w $quartile3 $ycrd] {break}
foreach {pxcrdM pycrd2} [coordsToPixel $w $maximum $ycrd] {break}
set pycrd0 [expr {$pycrd1-$boxwidth/2}]
set pycrd2 [expr {$pycrd1+$boxwidth/2}]
set pycrd0h [expr {$pycrd1-$boxwidth/4}]
set pycrd2h [expr {$pycrd1+$boxwidth/4}]
$w create line $pxcrdm $pycrd1 $pxcrd1 $pycrd1 \
-fill $colour -tag [list data data_$series]
$w create line $pxcrdm $pycrd0h $pxcrdm $pycrd2h \
-fill $colour -tag [list data data_$series]
$w create line $pxcrd3 $pycrd1 $pxcrdM $pycrd1 \
-fill $colour -tag [list data data_$series]
$w create line $pxcrdM $pycrd0h $pxcrdM $pycrd2h \
-fill $colour -tag [list data data_$series]
$w create rectangle $pxcrd1 $pycrd0 $pxcrd3 $pycrd2 \
-outline $colour -fill $fillcolour -tag [list data data_$series]
$w create line $pxcrd2 $pycrd0 $pxcrd2 $pycrd2 -width 2 \
-fill $colour -tag [list data data_$series]
foreach value $data {
if { $value < $outlower || $value > $outupper } {
foreach {px py} [coordsToPixel $w $value $ycrd] {break}
$w create text $px $py -text "*" -anchor c \
-fill $colour -tag [list data data_$series]
continue
}
if { $value < $lower || $value > $upper } {
foreach {px py} [coordsToPixel $w $value $ycrd] {break}
$w create oval [expr {$px-2}] [expr {$py-2}] \
[expr {$px+2}] [expr {$py+2}] \
-fill $colour -tag [list data data_$series]
continue
}
}
} else {
foreach {pxcrd1 pycrdm} [coordsToPixel $w $xcrd $minimum ] {break}
foreach {pxcrd2 pycrd1} [coordsToPixel $w $xcrd $quartile1] {break}
foreach {pxcrd2 pycrd2} [coordsToPixel $w $xcrd $quartile2] {break}
foreach {pxcrd2 pycrd3} [coordsToPixel $w $xcrd $quartile3] {break}
foreach {pxcrd2 pycrdM} [coordsToPixel $w $xcrd $maximum ] {break}
set pxcrd0 [expr {$pxcrd1-$boxwidth/2}]
set pxcrd2 [expr {$pxcrd1+$boxwidth/2}]
set pxcrd0h [expr {$pxcrd1-$boxwidth/4}]
set pxcrd2h [expr {$pxcrd1+$boxwidth/4}]
$w create line $pxcrd1 $pycrdm $pxcrd1 $pycrd1 \
-fill $colour -tag [list data data_$series]
$w create line $pxcrd0h $pycrdm $pxcrd2h $pycrdm \
-fill $colour -tag [list data data_$series]
$w create line $pxcrd1 $pycrd3 $pxcrd1 $pycrdM \
-fill $colour -tag [list data data_$series]
$w create line $pxcrd0h $pycrdM $pxcrd2h $pycrdM \
-fill $colour -tag [list data data_$series]
$w create rectangle $pxcrd0 $pycrd1 $pxcrd2 $pycrd3 \
-outline $colour -fill $fillcolour -tag [list data data_$series]
$w create line $pxcrd0 $pycrd2 $pxcrd2 $pycrd2 -width 2 \
-fill $colour -tag [list data data_$series]
foreach value $data {
if { $value < $outlower || $value > $outupper } {
foreach {px py} [coordsToPixel $w $xcrd $value] {break}
$w create text $px $py -text "*" \
-fill $colour -tag [list data data_$series]
continue
}
if { $value < $lower || $value > $upper } {
foreach {px py} [coordsToPixel $w $xcrd $value] {break}
$w create oval [expr {$px-3}] [expr {$py-3}] \
[expr {$px+3}] [expr {$py+3}] \
-fill $colour -tag [list data data_$series]
continue
}
}
}
$w lower data
}
# DrawBoxData --
# Draw the data in a boxplot (y-axis consists of labels)
# Arguments:
# w Name of the canvas
# label Label on the y-axis to put the box on
# xcrd Next x coordinate or a list of coordinates
# Result:
# None
# Side effects:
# New data drawn in canvas
#
proc ::Plotchart::DrawBoxData { w label xcrd } {
variable config
variable scaling
set index [lsearch $config($w,axisnames) $label]
if { $index == -1 } {
return "Label $label not found on y-axis"
}
set ycrd [expr {$index+0.5}]
DrawBoxWhiskers $w box $xcrd $ycrd
}
# DrawPie --
# Draw the pie
# Arguments:
# w Name of the canvas
# data Data series (pairs of label-value)
# Result:
# None
# Side effects:
# Pie filled
#
proc ::Plotchart::DrawPie { w data } {
variable data_series
variable scaling
set pxmin $scaling($w,pxmin)
set pymin $scaling($w,pymin)
set pxmax $scaling($w,pxmax)
set pymax $scaling($w,pymax)
set colours $scaling(${w},colours)
if {[llength ${data}] == 2} {
# use canvas create oval as arc does not fill with colour for a full circle
set colour [lindex ${colours} 0]
${w} create oval ${pxmin} ${pymin} ${pxmax} ${pymax} -fill ${colour}
# text looks nicer at 45 degree
set rad [expr {45.0 * 3.1415926 / 180.0}]
set xtext [expr {(${pxmin}+${pxmax}+cos(${rad})*(${pxmax}-${pxmin}+20))/2}]
set ytext [expr {(${pymin}+${pymax}-sin(${rad})*(${pymax}-${pymin}+20))/2}]
foreach {label value} ${data} {
break
}
${w} create text ${xtext} ${ytext} -text ${label} -anchor w
set scaling($w,angles) {0 360}
} else {
#
# Determine the scale for the values
# (so we can draw the correct angles)
#
set sum 0.0
foreach {label value} $data {
set sum [expr {$sum + $value}]
}
set factor [expr {360.0/$sum}]
#
# Draw the line piece
#
set angle_bgn 0.0
set angle_ext 0.0
set sum 0.0
set idx 0
array unset scaling ${w},angles
set colours [CycleColours ${colours} [expr {[llength ${data}] / 2}]]
foreach {label value} $data {
set colour [lindex $colours $idx]
incr idx
if { $value == "" } {
break
}
set angle_bgn [expr {$sum * $factor}]
set angle_ext [expr {$value * $factor}]
lappend scaling(${w},angles) [expr {int(${angle_bgn})}]
$w create arc $pxmin $pymin $pxmax $pymax \
-start $angle_bgn -extent $angle_ext \
-fill $colour -style pieslice
set rad [expr {($angle_bgn+0.5*$angle_ext)*3.1415926/180.0}]
set xtext [expr {($pxmin+$pxmax+cos($rad)*($pxmax-$pxmin+20))/2}]
set ytext [expr {($pymin+$pymax-sin($rad)*($pymax-$pymin+20))/2}]
if { $xtext > ($pxmin+$pymax)/2 } {
set dir w
} else {
set dir e
}
$w create text $xtext $ytext -text $label -anchor $dir
set sum [expr {$sum + $value}]
}
}
}
# DrawPolarData --
# Draw data given in polar coordinates
# Arguments:
# w Name of the canvas
# series Data series
# rad Next radius
# phi Next angle (in degrees)
# Result:
# None
# Side effects:
# Data drawn in canvas
#
proc ::Plotchart::DrawPolarData { w series rad phi } {
variable torad
set xcrd [expr {$rad*cos($phi*$torad)}]
set ycrd [expr {$rad*sin($phi*$torad)}]
DrawData $w $series $xcrd $ycrd
}
# DrawVertBarData --
# Draw the vertical bars
# Arguments:
# w Name of the canvas
# series Data series
# ydata Series of y data
# colour The colour to use (optional)
# dir Direction if graded colours are used (see DrawGradientBackground)
# Result:
# None
# Side effects:
# Data bars drawn in canvas
#
proc ::Plotchart::DrawVertBarData { w series ydata {colour black} {dir {}} } {
variable data_series
variable scaling
variable legend
#
# Draw the bars
#
set x $scaling($w,xbase)
#
# set the colours
#
if {[llength ${colour}]} {
set colours ${colour}
} elseif {[info exists scaling(${w},colours)]} {
set colours $scaling(${w},colours)
} else {
set colours {}
}
set colours [CycleColours ${colours} [llength ${ydata}]]
#
# Legend information
#
set legendcol [lindex $colours 0]
set data_series($w,$series,-colour) $legendcol
set data_series($w,$series,-type) rectangle
if { [info exists legend($w,canvas)] } {
set legendw $legend($w,canvas)
$legendw itemconfigure $series -fill $legendcol
}
set newbase {}
set idx 0
foreach yvalue $ydata ybase $scaling($w,ybase) {
set colour [lindex ${colours} ${idx}]
incr idx
if { $yvalue == "" } {
set yvalue 0.0
}
set xnext [expr {$x+$scaling($w,barwidth)}]
set y [expr {$yvalue+$ybase}]
foreach {px1 py1} [coordsToPixel $w $x $ybase] {break}
foreach {px2 py2} [coordsToPixel $w $xnext $y ] {break}
if { $dir == {} } {
$w create rectangle $px1 $py1 $px2 $py2 \
-fill $colour -tag [list data data_$series]
} else {
DrawGradientBackground $w $colour $dir [list $px1 $py1 $px2 $py2]
}
$w lower data
set x [expr {$x+1.0}]
lappend newbase $y
}
#
# Prepare for the next series
#
if { $scaling($w,stacked) } {
set scaling($w,ybase) $newbase
}
set scaling($w,xbase) [expr {$scaling($w,xbase)+$scaling($w,xshift)}]
}
# DrawHorizBarData --
# Draw the horizontal bars
# Arguments:
# w Name of the canvas
# series Data series
# xdata Series of x data
# colour The colour to use (optional)
# dir Direction if graded colours are used (see DrawGradientBackground)
# Result:
# None
# Side effects:
# Data bars drawn in canvas
#
proc ::Plotchart::DrawHorizBarData { w series xdata {colour black} {dir {}} } {
variable data_series
variable scaling
#
# Draw the bars
#
set y $scaling($w,ybase)
#
# set the colours
#
if {[llength ${colour}]} {
set colours ${colour}
} elseif {[info exists scaling(${w},colours)]} {
set colours $scaling(${w},colours)
} else {
set colours {}
}
set colours [CycleColours ${colours} [llength ${xdata}]]
#
# Legend information
#
set legendcol [lindex $colours 0]
set data_series($w,$series,-colour) $legendcol
if { [info exists legend($w,canvas)] } {
set legendw $legend($w,canvas)
$legendw itemconfigure $series -fill $legendcol
}
set newbase {}
set idx 0
foreach xvalue $xdata xbase $scaling($w,xbase) {
set colour [lindex ${colours} ${idx}]
incr idx
if { $xvalue == "" } {
set xvalue 0.0
}
set ynext [expr {$y+$scaling($w,barwidth)}]
set x [expr {$xvalue+$xbase}]
foreach {px1 py1} [coordsToPixel $w $xbase $y ] {break}
foreach {px2 py2} [coordsToPixel $w $x $ynext] {break}
if { $dir == {} } {
$w create rectangle $px1 $py1 $px2 $py2 \
-fill $colour -tag data
} else {
DrawGradientBackground $w $colour $dir [list $px1 $py1 $px2 $py2]
}
$w lower data
set y [expr {$y+1.0}]
lappend newbase $x
}
#
# Prepare for the next series
#
if { $scaling($w,stacked) } {
set scaling($w,xbase) $newbase
}
set scaling($w,ybase) [expr {$scaling($w,ybase)+$scaling($w,yshift)}]
}
# DrawHistogramData --
# Draw the vertical bars for a histogram
# Arguments:
# w Name of the canvas
# series Data series
# xcrd X coordinate (for the righthand side of the bar)
# ycrd Y coordinate
# Result:
# None
# Side effects:
# Data bars drawn in canvas
#
proc ::Plotchart::DrawHistogramData { w series xcrd ycrd } {
variable data_series
variable scaling
#
# Check for missing values (only y-value can be missing!)
#
if { $ycrd == "" } {
set data_series($w,$series,x) $xcrd
return
}
#
# Draw the bar
#
set colour "black"
if { [info exists data_series($w,$series,-colour)] } {
set colour $data_series($w,$series,-colour)
}
foreach {pxcrd pycrd} [coordsToPixel $w $xcrd $ycrd] {break}
if { [info exists data_series($w,$series,x)] } {
set xold $data_series($w,$series,x)
} else {
set xold $scaling($w,xmin)
}
set yold $scaling($w,ymin)
foreach {pxold pyold} [coordsToPixel $w $xold $yold] {break}
$w create rectangle $pxold $pyold $pxcrd $pycrd \
-fill $colour -outline $colour -tag data
$w lower data
set data_series($w,$series,x) $xcrd
}
# DrawTimePeriod --
# Draw a period
# Arguments:
# w Name of the canvas
# text Text to identify the "period" item
# time_begin Start time
# time_end Stop time
# colour The colour to use (optional)
# Result:
# None
# Side effects:
# Data bars drawn in canvas
#
proc ::Plotchart::DrawTimePeriod { w text time_begin time_end {colour black}} {
variable data_series
variable scaling
#
# Draw the text first
#
set ytext [expr {$scaling($w,current)+0.5*$scaling($w,dy)}]
foreach {x y} [coordsToPixel $w $scaling($w,xmin) $ytext] {break}
$w create text 5 $y -text $text -anchor w \
-tags [list vertscroll above item_[expr {int($scaling($w,current))}]]
#
# Draw the bar to indicate the period
#
set xmin [clock scan $time_begin]
set xmax [clock scan $time_end]
set ybott [expr {$scaling($w,current)+$scaling($w,dy)}]
foreach {x1 y1} [coordsToPixel $w $xmin $scaling($w,current)] {break}
foreach {x2 y2} [coordsToPixel $w $xmax $ybott ] {break}
$w create rectangle $x1 $y1 $x2 $y2 -fill $colour \
-tags [list vertscroll horizscroll below item_[expr {int($scaling($w,current))}]]
ReorderChartItems $w
set scaling($w,current) [expr {$scaling($w,current)-1.0}]
RescaleChart $w
}
# DrawTimeVertLine --
# Draw a vertical line with a label
# Arguments:
# w Name of the canvas
# text Text to identify the line
# time Time for which the line is drawn
# Result:
# None
# Side effects:
# Line drawn in canvas
#
proc ::Plotchart::DrawTimeVertLine { w text time {colour black}} {
variable data_series
variable scaling
#
# Draw the text first
#
set xtime [clock scan $time]
#set ytext [expr {$scaling($w,ymax)-0.5*$scaling($w,dy)}]
set ytext $scaling($w,ymax)
foreach {x y} [coordsToPixel $w $xtime $ytext] {break}
set y [expr {$y-5}]
$w create text $x $y -text $text -anchor sw -tags {horizscroll timeline}
#
# Draw the line
#
foreach {x1 y1} [coordsToPixel $w $xtime $scaling($w,ymin)] {break}
foreach {x2 y2} [coordsToPixel $w $xtime $scaling($w,ymax)] {break}
$w create line $x1 $y1 $x2 $y2 -fill black -tags {horizscroll timeline tline}
$w raise topmask
}
# DrawTimeMilestone --
# Draw a "milestone"
# Arguments:
# w Name of the canvas
# text Text to identify the line
# time Time for which the milestone is drawn
# colour Optionally the colour
# Result:
# None
# Side effects:
# Line drawn in canvas
#
proc ::Plotchart::DrawTimeMilestone { w text time {colour black}} {
variable data_series
variable scaling
#
# Draw the text first
#
set ytext [expr {$scaling($w,current)+0.5*$scaling($w,dy)}]
foreach {x y} [coordsToPixel $w $scaling($w,xmin) $ytext] {break}
$w create text 5 $y -text $text -anchor w \
-tags [list vertscroll above item_[expr {int($scaling($w,current))}]]
#
# Draw an upside-down triangle to indicate the time
#
set xcentre [clock scan $time]
set ytop $scaling($w,current)
set ybott [expr {$scaling($w,current)+0.8*$scaling($w,dy)}]
foreach {x1 y1} [coordsToPixel $w $xcentre $ybott] {break}
foreach {x2 y2} [coordsToPixel $w $xcentre $ytop] {break}
set x2 [expr {$x1-0.4*($y1-$y2)}]
set x3 [expr {$x1+0.4*($y1-$y2)}]
set y3 $y2
$w create polygon $x1 $y1 $x2 $y2 $x3 $y3 -fill $colour \
-tags [list vertscroll horizscroll below item_[expr {int($scaling($w,current))}]]
ReorderChartItems $w
set scaling($w,current) [expr {$scaling($w,current)-1.0}]
RescaleChart $w
}
# ScaleItems --
# Scale all items by a given factor
# Arguments:
# w Name of the canvas
# xcentre X-coordinate of centre
# ycentre Y-coordinate of centre
# factor The factor to scale them by
# Result:
# None
# Side effects:
# All items are scaled by the given factor and the
# world coordinates are adjusted.
#
proc ::Plotchart::ScaleItems { w xcentre ycentre factor } {
variable scaling
$w scale all $xcentre $ycentre $factor $factor
foreach {xc yc} [pixelToCoords $w $xcentre $ycentre] {break}
set rfact [expr {1.0/$factor}]
set scaling($w,xfactor) [expr {$scaling($w,xfactor)*$factor}]
set scaling($w,yfactor) [expr {$scaling($w,yfactor)*$factor}]
set scaling($w,xmin) [expr {(1.0-$rfact)*$xc+$rfact*$scaling($w,xmin)}]
set scaling($w,xmax) [expr {(1.0-$rfact)*$xc+$rfact*$scaling($w,xmax)}]
set scaling($w,ymin) [expr {(1.0-$rfact)*$yc+$rfact*$scaling($w,ymin)}]
set scaling($w,ymax) [expr {(1.0-$rfact)*$yc+$rfact*$scaling($w,ymax)}]
}
# MoveItems --
# Move all items by a given vector
# Arguments:
# w Name of the canvas
# xmove X-coordinate of move vector
# ymove Y-coordinate of move vector
# Result:
# None
# Side effects:
# All items are moved by the given vector and the
# world coordinates are adjusted.
#
proc ::Plotchart::MoveItems { w xmove ymove } {
variable scaling
$w move all $xmove $ymove
set dx [expr {$scaling($w,xfactor)*$xmove}]
set dy [expr {$scaling($w,yfactor)*$ymove}]
set scaling($w,xmin) [expr {$scaling($w,xmin)+$dx}]
set scaling($w,xmax) [expr {$scaling($w,xmax)+$dx}]
set scaling($w,ymin) [expr {$scaling($w,ymin)+$dy}]
set scaling($w,ymax) [expr {$scaling($w,ymax)+$dy}]
}
# DrawIsometricData --
# Draw the data in an isometric plot
# Arguments:
# w Name of the canvas
# type Type of data
# args Coordinates and so on
# Result:
# None
# Side effects:
# New data drawn in canvas
#
proc ::Plotchart::DrawIsometricData { w type args } {
variable data_series
#
# What type of data?
#
if { $type == "rectangle" } {
foreach {x1 y1 x2 y2 colour} [concat $args "black"] {break}
foreach {px1 py1} [coordsToPixel $w $x1 $y1] {break}
foreach {px2 py2} [coordsToPixel $w $x2 $y2] {break}
$w create rectangle $px1 $py1 $px2 $py2 \
-outline $colour -tag data
$w lower data
}
if { $type == "filled-rectangle" } {
foreach {x1 y1 x2 y2 colour} [concat $args "black"] {break}
foreach {px1 py1} [coordsToPixel $w $x1 $y1] {break}
foreach {px2 py2} [coordsToPixel $w $x2 $y2] {break}
$w create rectangle $px1 $py1 $px2 $py2 \
-outline $colour -fill $colour -tag data
$w lower data
}
if { $type == "filled-circle" } {
foreach {x1 y1 rad colour} [concat $args "black"] {break}
set x2 [expr {$x1+$rad}]
set y2 [expr {$y1+$rad}]
set x1 [expr {$x1-$rad}]
set y1 [expr {$y1-$rad}]
foreach {px1 py1} [coordsToPixel $w $x1 $y1] {break}
foreach {px2 py2} [coordsToPixel $w $x2 $y2] {break}
$w create oval $px1 $py1 $px2 $py2 \
-outline $colour -fill $colour -tag data
$w lower data
}
if { $type == "circle" } {
foreach {x1 y1 rad colour} [concat $args "black"] {break}
set x2 [expr {$x1+$rad}]
set y2 [expr {$y1+$rad}]
set x1 [expr {$x1-$rad}]
set y1 [expr {$y1-$rad}]
foreach {px1 py1} [coordsToPixel $w $x1 $y1] {break}
foreach {px2 py2} [coordsToPixel $w $x2 $y2] {break}
$w create oval $px1 $py1 $px2 $py2 \
-outline $colour -tag data
$w lower data
}
}
# BackgroundColour --
# Set the background colour or other aspects of the background
# Arguments:
# w Name of the canvas
# part Which part: axes or plot
# colour Colour to use (or if part is "image", name of the image)
# dir Direction of increasing whiteness (optional, for "gradient"
#
# Result:
# None
# Side effect:
# Colour of the relevant part is changed
#
proc ::Plotchart::BackgroundColour { w part colour {dir {}} } {
if { $part == "axes" } {
$w configure -highlightthickness 0
$w itemconfigure mask -fill $colour -outline $colour
}
if { $part == "plot" } {
$w configure -highlightthickness 0
$w configure -background $colour
}
if { $part == "gradient" } {
DrawGradientBackground $w $colour $dir
}
if { $part == "image" } {
DrawImageBackground $w $colour
}
}
# DrawRadialSpokes --
# Draw the spokes of the radial chart
# Arguments:
# w Name of the canvas
# names Names of the spokes
# Result:
# None
# Side effects:
# Radial chart filled in
#
proc ::Plotchart::DrawRadialSpokes { w names } {
variable settings
variable scaling
set pxmin $scaling($w,pxmin)
set pymin $scaling($w,pymin)
set pxmax $scaling($w,pxmax)
set pymax $scaling($w,pymax)
$w create oval $pxmin $pymin $pxmax $pymax -outline black
set dangle [expr {2.0 * 3.1415926 / [llength $names]}]
set angle 0.0
set xcentr [expr {($pxmin+$pxmax)/2.0}]
set ycentr [expr {($pymin+$pymax)/2.0}]
foreach name $names {
set xtext [expr {$xcentr+cos($angle)*($pxmax-$pxmin+20)/2}]
set ytext [expr {$ycentr-sin($angle)*($pymax-$pymin+20)/2}]
set xspoke [expr {$xcentr+cos($angle)*($pxmax-$pxmin)/2}]
set yspoke [expr {$ycentr-sin($angle)*($pymax-$pymin)/2}]
if { cos($angle) >= 0.0 } {
set anchor w
} else {
set anchor e
}
if { abs($xspoke-$xcentr) < 2 } {
set xspoke $xcentr
}
if { abs($yspoke-$ycentr) < 2 } {
set yspoke $ycentr
}
$w create text $xtext $ytext -text $name -anchor $anchor
$w create line $xcentr $ycentr $xspoke $yspoke -fill black
set angle [expr {$angle+$dangle}]
}
}
# DrawRadial --
# Draw the data for the radial chart
# Arguments:
# w Name of the canvas
# values Values for each spoke
# colour Colour of the line
# thickness Thickness of the line (optional)
# Result:
# None
# Side effects:
# New line drawn
#
proc ::Plotchart::DrawRadial { w values colour {thickness 1} } {
variable data_series
variable settings
variable scaling
if { [llength $values] != $settings($w,number) } {
return -code error "Incorrect number of data given - should be $settings($w,number)"
}
set pxmin $scaling($w,pxmin)
set pymin $scaling($w,pymin)
set pxmax $scaling($w,pxmax)
set pymax $scaling($w,pymax)
set dangle [expr {2.0 * 3.1415926 / [llength $values]}]
set angle 0.0
set xcentr [expr {($pxmin+$pxmax)/2.0}]
set ycentr [expr {($pymin+$pymax)/2.0}]
set coords {}
if { ! [info exists data_series($w,base)] } {
set data_series($w,base) {}
foreach value $values {
lappend data_series($w,base) 0.0
}
}
set newbase {}
foreach value $values base $data_series($w,base) {
if { $settings($w,style) != "lines" } {
set value [expr {$value+$base}]
}
set factor [expr {$value/$settings($w,scale)}]
set xspoke [expr {$xcentr+$factor*cos($angle)*($pxmax-$pxmin)/2}]
set yspoke [expr {$ycentr-$factor*sin($angle)*($pymax-$pymin)/2}]
if { abs($xspoke-$xcentr) < 2 } {
set xspoke $xcentr
}
if { abs($yspoke-$ycentr) < 2 } {
set yspoke $ycentr
}
lappend coords $xspoke $yspoke
lappend newbase $value
set angle [expr {$angle+$dangle}]
}
set data_series($w,base) $newbase
if { $settings($w,style) == "filled" } {
set fillcolour $colour
} else {
set fillcolour ""
}
set id [$w create polygon $coords -outline $colour -width $thickness -fill $fillcolour -tags data]
$w lower $id
}
# DrawTrendLine --
# Draw a trend line based on the given data in an XY-plot
# Arguments:
# w Name of the canvas
# series Data series
# xcrd Next x coordinate
# ycrd Next y coordinate
# Result:
# None
# Side effects:
# New/updated trend line drawn in canvas
#
proc ::Plotchart::DrawTrendLine { w series xcrd ycrd } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ycrd == "" } {
return
}
#
# Compute the coefficients of the line
#
if { [info exists data_series($w,$series,xsum)] } {
set nsum [expr {$data_series($w,$series,nsum) + 1.0}]
set xsum [expr {$data_series($w,$series,xsum) + $xcrd}]
set x2sum [expr {$data_series($w,$series,x2sum) + $xcrd*$xcrd}]
set ysum [expr {$data_series($w,$series,ysum) + $ycrd}]
set xysum [expr {$data_series($w,$series,xysum) + $ycrd*$xcrd}]
} else {
set nsum [expr {1.0}]
set xsum [expr {$xcrd}]
set x2sum [expr {$xcrd*$xcrd}]
set ysum [expr {$ycrd}]
set xysum [expr {$ycrd*$xcrd}]
}
if { $nsum*$x2sum != $xsum*$xsum } {
set a [expr {($nsum*$xysum-$xsum*$ysum)/($nsum*$x2sum - $xsum*$xsum)}]
} else {
set a 0.0
}
set b [expr {($ysum-$a*$xsum)/$nsum}]
set xmin $scaling($w,xmin)
set xmax $scaling($w,xmax)
foreach {pxmin pymin} [coordsToPixel $w $xmin [expr {$a*$xmin+$b}]] {break}
foreach {pxmax pymax} [coordsToPixel $w $xmax [expr {$a*$xmax+$b}]] {break}
#
# Draw the actual line
#
set colour "black"
if { [info exists data_series($w,$series,-colour)] } {
set colour $data_series($w,$series,-colour)
}
if { [info exists data_series($w,$series,trend)] } {
$w coords $data_series($w,$series,trend) $pxmin $pymin $pxmax $pymax
} else {
set data_series($w,$series,trend) \
[$w create line $pxmin $pymin $pxmax $pymax -fill $colour -tag [list data data_$series]]
}
$w lower data
set data_series($w,$series,nsum) $nsum
set data_series($w,$series,xsum) $xsum
set data_series($w,$series,x2sum) $x2sum
set data_series($w,$series,ysum) $ysum
set data_series($w,$series,xysum) $xysum
}
# VectorConfigure --
# Set configuration options for vectors
# Arguments:
# w Name of the canvas
# series Data series (identifier for vectors)
# args Pairs of configuration options:
# -scale|-colour|-centred|-type {cartesian|polar|nautical}
# Result:
# None
# Side effects:
# Configuration options are stored
#
proc ::Plotchart::VectorConfigure { w series args } {
variable data_series
variable scaling
foreach {option value} $args {
switch -- $option {
"-scale" {
if { $value > 0.0 } {
set scaling($w,$series,vectorscale) $value
} else {
return -code error "Scale factor must be positive"
}
}
"-colour" - "-color" {
set data_series($w,$series,vectorcolour) $value
}
"-centered" - "-centred" {
set data_series($w,$series,vectorcentred) $value
}
"-type" {
if { [lsearch {cartesian polar nautical} $value] >= 0 } {
set data_series($w,$series,vectortype) $value
} else {
return -code error "Unknown vector components option: $value"
}
}
default {
return -code error "Unknown vector option: $option ($value)"
}
}
}
}
# DrawVector --
# Draw a vector at the given coordinates with the given components
# Arguments:
# w Name of the canvas
# series Data series (identifier for the vectors)
# xcrd X coordinate of start or centre
# ycrd Y coordinate of start or centre
# ucmp X component or length
# vcmp Y component or angle
# Result:
# None
# Side effects:
# New arrow drawn in canvas
#
proc ::Plotchart::DrawVector { w series xcrd ycrd ucmp vcmp } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ycrd == "" } {
return
}
#
# Check for missing values
#
if { $ucmp == "" || $vcmp == "" } {
return
}
#
# Get the options
#
set scalef 1.0
set colour black
set centred 0
set type cartesian
if { [info exists scaling($w,$series,vectorscale)] } {
set scalef $scaling($w,$series,vectorscale)
}
if { [info exists data_series($w,$series,vectorcolour)] } {
set colour $data_series($w,$series,vectorcolour)
}
if { [info exists data_series($w,$series,vectorcentred)] } {
set centred $data_series($w,$series,vectorcentred)
}
if { [info exists data_series($w,$series,vectortype)] } {
set type $data_series($w,$series,vectortype)
}
#
# Compute the coordinates of beginning and end of the arrow
#
switch -- $type {
"polar" {
set x1 [expr {$ucmp * cos( 3.1415926 * $vcmp / 180.0 ) }]
set y1 [expr {$ucmp * sin( 3.1415926 * $vcmp / 180.0 ) }]
set ucmp $x1
set vcmp $y1
}
"nautical" {
set x1 [expr {$ucmp * sin( 3.1415926 * $vcmp / 180.0 ) }]
set y1 [expr {$ucmp * cos( 3.1415926 * $vcmp / 180.0 ) }]
set ucmp $x1
set vcmp $y1
}
}
set u1 [expr {$scalef * $ucmp}]
set v1 [expr {$scalef * $vcmp}]
foreach {x1 y1} [coordsToPixel $w $xcrd $ycrd] {break}
if { $centred } {
set x1 [expr {$x1 - 0.5 * $u1}]
set y1 [expr {$y1 + 0.5 * $v1}]
}
set x2 [expr {$x1 + $u1}]
set y2 [expr {$y1 - $v1}]
#
# Draw the arrow
#
$w create line $x1 $y1 $x2 $y2 -fill $colour -tag [list data data_$series] -arrow last
$w lower data
}
# DotConfigure --
# Set configuration options for dots
# Arguments:
# w Name of the canvas
# series Data series (identifier for dots)
# args Pairs of configuration options:
# -radius|-colour|-classes {value colour ...}|-outline|-scalebyvalue|
# -scale
# Result:
# None
# Side effects:
# Configuration options are stored
#
proc ::Plotchart::DotConfigure { w series args } {
variable data_series
variable scaling
foreach {option value} $args {
switch -- $option {
"-scale" {
if { $value > 0.0 } {
set scaling($w,$series,dotscale) $value
} else {
return -code error "Scale factor must be positive"
}
}
"-colour" - "-color" {
set data_series($w,$series,dotcolour) $value
}
"-radius" {
set data_series($w,$series,dotradius) $value
}
"-scalebyvalue" {
set data_series($w,$series,dotscalebyvalue) $value
}
"-outline" {
set data_series($w,$series,dotoutline) $value
}
"-classes" {
set data_series($w,$series,dotclasses) $value
}
default {
return -code error "Unknown dot option: $option ($value)"
}
}
}
}
# DrawDot --
# Draw a dot at the given coordinates, size and colour based on the given value
# Arguments:
# w Name of the canvas
# series Data series (identifier for the vectors)
# xcrd X coordinate of start or centre
# ycrd Y coordinate of start or centre
# value Value to be used
# Result:
# None
# Side effects:
# New oval drawn in canvas
#
proc ::Plotchart::DrawDot { w series xcrd ycrd value } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ycrd == "" || $value == "" } {
return
}
#
# Get the options
#
set scalef 1.0
set colour black
set usevalue 1
set outline black
set radius 3
set classes {}
if { [info exists scaling($w,$series,dotscale)] } {
set scalef $scaling($w,$series,dotscale)
}
if { [info exists data_series($w,$series,dotcolour)] } {
set colour $data_series($w,$series,dotcolour)
}
if { [info exists data_series($w,$series,dotoutline)] } {
set outline {}
if { $data_series($w,$series,dotoutline) } {
set outline black
}
}
if { [info exists data_series($w,$series,dotradius)] } {
set radius $data_series($w,$series,dotradius)
}
if { [info exists data_series($w,$series,dotclasses)] } {
set classes $data_series($w,$series,dotclasses)
}
if { [info exists data_series($w,$series,dotscalebyvalue)] } {
set usevalue $data_series($w,$series,dotscalebyvalue)
}
#
# Compute the radius and the colour
#
if { $usevalue } {
set radius [expr {$scalef * $value}]
}
if { $classes != {} } {
foreach {limit col} $classes {
if { $value < $limit } {
set colour $col
break
}
}
}
foreach {x y} [coordsToPixel $w $xcrd $ycrd] {break}
set x1 [expr {$x - $radius}]
set y1 [expr {$y - $radius}]
set x2 [expr {$x + $radius}]
set y2 [expr {$y + $radius}]
#
# Draw the oval
#
$w create oval $x1 $y1 $x2 $y2 -fill $colour -tag [list data data_$series] -outline $outline
$w lower data
}
# DrawRchart --
# Draw data together with two horizontal lines representing the
# expected range
# Arguments:
# w Name of the canvas
# series Data series
# xcrd X coordinate of the data point
# ycrd Y coordinate of the data point
# Result:
# None
# Side effects:
# New data point drawn, lines updated
#
proc ::Plotchart::DrawRchart { w series xcrd ycrd } {
variable data_series
variable scaling
#
# Check for missing values
#
if { $xcrd == "" || $ycrd == "" } {
return
}
#
# In any case, draw the data point
#
DrawData $w $series $xcrd $ycrd
#
# Compute the expected range
#
if { ! [info exists data_series($w,$series,rchart)] } {
set data_series($w,$series,rchart) $ycrd
} else {
lappend data_series($w,$series,rchart) $ycrd
if { [llength $data_series($w,$series,rchart)] < 2 } {
return
}
set filtered $data_series($w,$series,rchart)
set outside 1
while { $outside } {
set data $filtered
foreach {ymin ymax} [RchartValues $data] {break}
set filtered {}
set outside 0
foreach y $data {
if { $y < $ymin || $y > $ymax } {
set outside 1
} else {
lappend filtered $y
}
}
}
#
# Draw the limit lines
#
if { [info exists data_series($w,$series,rchartlimits)] } {
eval $w delete $data_series($w,$series,rchartlimits)
}
set colour "black"
if { [info exists data_series($w,$series,-colour)] } {
set colour $data_series($w,$series,-colour)
}
set xmin $scaling($w,xmin)
set xmax $scaling($w,xmax)
foreach {pxmin pymin} [coordsToPixel $w $xmin $ymin] {break}
foreach {pxmax pymax} [coordsToPixel $w $xmax $ymax] {break}
set data_series($w,$series,rchartlimits) [list \
[$w create line $pxmin $pymin $pxmax $pymin -fill $colour -tag [list data data_$series]] \
[$w create line $pxmin $pymax $pxmax $pymax -fill $colour -tag [list data data_$series]]]
}
}
# RchartValues --
# Compute the expected range for a series of data
# Arguments:
# data Data to be examined
# Result:
# Expected minimum and maximum
#
proc ::Plotchart::RchartValues { data } {
set sum 0.0
set sum2 0.0
set ndata [llength $data]
if { $ndata <= 1 } {
return [list $data $data]
}
foreach v $data {
set sum [expr {$sum + $v}]
set sum2 [expr {$sum2 + $v*$v}]
}
if { $ndata < 2 } {
return [list $v $v]
}
set variance [expr {($sum2 - $sum*$sum/double($ndata))/($ndata-1.0)}]
if { $variance < 0.0 } {
set variance 0.0
}
set vmean [expr {$sum/$ndata}]
set stdev [expr {sqrt($variance)}]
set vmin [expr {$vmean - 3.0 * $stdev}]
set vmax [expr {$vmean + 3.0 * $stdev}]
return [list $vmin $vmax]
}
# ReorderChartItems --
# Rearrange the drawing order of time and Gantt chart items
# Arguments:
# w Canvas widget containing them
# Result:
# None
#
proc ::Plotchart::ReorderChartItems { w } {
$w lower above
$w lower vertmask
$w lower tline
$w lower below
$w lower lowest
}
# RescaleChart --
# Reset the scaling of the scrollbar(s) for time and Gantt charts
# Arguments:
# w Canvas widget containing them
# Result:
# None
# Note:
# To be called after scaling($w,current) has been updated
# or a new time line has been added
#
proc ::Plotchart::RescaleChart { w } {
variable scaling
if { [info exists scaling($w,vscroll)] } {
if { $scaling($w,current) >= 0.0 } {
set scaling($w,theight) $scaling($w,ymax)
$scaling($w,vscroll) set 0.0 1.0
} else {
set scaling($w,theight) [expr {$scaling($w,ymax)-$scaling($w,current)}]
$scaling($w,vscroll) set $scaling($w,curpos) \
[expr {$scaling($w,curpos) + $scaling($w,ymax)/$scaling($w,theight)}]
}
}
if { [info exists scaling($w,hscroll)] } {
foreach {xmin dummy xmax} [$w bbox $w horizscroll] {break}
set scaling($w,twidth) [expr {$xmax-$xmin}]
if { $scaling($w,twidth) < $scaling($w,pxmax)-$scaling($w,pxmin) } {
$scaling($w,hscroll) set 0.0 1.0
} else {
$scaling($w,hscroll) set $scaling($w,curhpos) \
[expr {$scaling($w,curhpos) + \
($scaling($w,pxmax)-$scaling($w,pxmin)) \
/double($scaling($w,twidth))}]
}
}
}
# ConnectVertScrollbar --
# Connect a vertical scroll bar to the chart
# Arguments:
# w Canvas widget containing them
# scrollbar Scroll bar in question
# Result:
# None
#
proc ::Plotchart::ConnectVertScrollbar { w scrollbar } {
variable scaling
$scrollbar configure -command [list ::Plotchart::VertScrollChart $w]
bind $w <4> [list ::Plotchart::VertScrollChart $w scroll -1 units]
bind $w <5> [list ::Plotchart::VertScrollChart $w scroll 1 units]
bind $w <MouseWheel> [list ::Plotchart::VertScrollChart $w scroll %D wheel]
set scaling($w,vscroll) $scrollbar
RescaleChart $w
}
# ConnectHorizScrollbar --
# Connect a horizontal scroll bar to the chart
# Arguments:
# w Canvas widget containing them
# scrollbar Scroll bar in question
# Result:
# None
#
proc ::Plotchart::ConnectHorizScrollbar { w scrollbar } {
variable scaling
$scrollbar configure -command [list ::Plotchart::HorizScrollChart $w]
set scaling($w,hscroll) $scrollbar
RescaleChart $w
}
# VertScrollChart --
# Scroll a chart using the vertical scroll bar
# Arguments:
# w Canvas widget containing them
# operation Operation to respond to
# number Number representing the size of the displacement
# unit Unit of displacement
# Result:
# None
#
proc ::Plotchart::!VertScrollChart { w operation number {unit {}}} {
variable scaling
set pixheight [expr {$scaling($w,pymax)-$scaling($w,pymin)}]
set height [expr {$pixheight*$scaling($w,theight)/$scaling($w,ymax)}]
switch -- $operation {
"moveto" {
set dy [expr {$height*($scaling($w,curpos)-$number)}]
set scaling($w,curpos) $number
}
"scroll" {
if { $unit == "units" } {
set dy [expr {-$number*$height/$scaling($w,theight)}]
set newpos [expr {$scaling($w,curpos) + $number/$scaling($w,theight)}]
} else {
set dy [expr {-$number*$pixheight}]
set newpos [expr {$scaling($w,curpos) + $number*$scaling($w,ymax)/$scaling($w,theight)}]
}
if { $newpos < 0.0 } {
set newpos 0.0
set dy [expr {$...}]
}
if { $newpos > 1.0 } {
set newpos 1.0
set dy [expr {$...}]
}
set scaling($w,curpos) $newpos
}
}
#
# TODO: limit the position between 0 and 1
#
$w move vertscroll 0 $dy
RescaleChart $w
}
proc ::Plotchart::VertScrollChart { w operation number {unit {}}} {
variable scaling
# Get the height of the scrolling region and the current position of the slider
set height [expr {$scaling($w,pymax)-$scaling($w,pymin)}]
foreach {ts bs} [$scaling($w,vscroll) get] {break}
if { $unit == "wheel" } {
set operation "scroll"
set unit "units"
set number [expr {$number>0? 1 : -1}]
}
switch -- $operation {
"moveto" {
# No scrolling if we are already at the top or bottom
if { $number < 0.0 } {
set number 0.0
}
if { $number+($bs-$ts) > 1.0 } {
set number [expr {1.0-($bs-$ts)}]
}
set dy [expr {$height*($scaling($w,curpos)-$number)/($bs-$ts)}]
set scaling($w,curpos) $number
$w move vertscroll 0 $dy
}
"scroll" {
# Handle "units" and "pages" the same
# No scrolling if we are at the top or bottom
if {$number == -1 && $ts == 0.0} {
return
}
if {$number == 1 && $bs == 1.0} {
return
}
# Scroll 1 unit in coordinate space, converted to pixel space
foreach {x1 y1} [coordsToPixel $w 0 0.0] {break}
foreach {x2 y2} [coordsToPixel $w 0 1.0] {break}
# This is the amount to scroll based on the current height
set amt [expr {$number*($y2-$y1)/$height}]
# Handle boundary conditions, don't want to scroll too far off
# the top or bottom.
if {$number == 1 && $bs-$amt > 1.0} {
set amt [expr {$bs-1.0}]
} elseif {$number == -1 && $ts-$amt < 0.0} {
set amt $ts
}
# Set the scrolling parameters and scroll
set dy [expr {$height*($scaling($w,curpos)-($ts-$amt))/($bs-$ts)}]
set scaling($w,curpos) [expr {$ts-$amt}]
$w move vertscroll 0 $dy
}
}
RescaleChart $w
}
# HorizScrollChart --
# Scroll a chart using the horizontal scroll bar
# Arguments:
# w Canvas widget containing them
# operation Operation to respond to
# number Number representing the size of the displacement
# unit Unit of displacement
# Result:
# None
#
proc ::Plotchart::HorizScrollChart { w operation number {unit {}}} {
variable scaling
# Get the width of the scrolling region and the current position of the slider
set width [expr {double($scaling($w,pxmax)-$scaling($w,pxmin))}]
foreach {ts bs} [$scaling($w,hscroll) get] {break}
switch -- $operation {
"moveto" {
# No scrolling if we are already at the top or bottom
if { $number < 0.0 } {
set number 0.0
}
if { $number+($bs-$ts) > 1.0 } {
set number [expr {1.0-($bs-$ts)}]
}
set dx [expr {$width*($scaling($w,curhpos)-$number)/($bs-$ts)}]
set scaling($w,curhpos) $number
$w move horizscroll $dx 0
}
"scroll" {
# Handle "units" and "pages" the same
# No scrolling if we are at the top or bottom
if {$number == -1 && $ts == 0.0} {
return
}
if {$number == 1 && $bs == 1.0} {
return
}
# Scroll 1 unit in coordinate space, converted to pixel space
set dx [expr {0.1*($scaling($w,xmax)-$scaling($w,xmin))}]
foreach {x1 y1} [coordsToPixel $w 0 0.0] {break}
foreach {x2 y2} [coordsToPixel $w $dx 0.0] {break}
# This is the amount to scroll based on the current width
set amt [expr {$number*($x2-$x1)/$width}]
# Handle boundary conditions, don't want to scroll too far off
# the left or the right
if {$number == 1 && $bs-$amt > 1.0} {
set amt [expr {$bs-1.0}]
} elseif {$number == -1 && $ts-$amt < 0.0} {
set amt $ts
}
# Set the scrolling parameters and scroll
set dx [expr {$width*($scaling($w,curhpos)-($ts-$amt))/($bs-$ts)}]
set scaling($w,curhpos) [expr {$ts-$amt}]
$w move horizscroll $dx 0
}
}
RescaleChart $w
}
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