/usr/share/ncarg/nclex/basic/basic02n.ncl is in libncarg-data 6.3.0-6build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | ; $Id: basic02n.ncl,v 1.13 2010-03-15 22:49:23 haley Exp $
;
; The first frame in this example demonstrates how to set the view port
; for a contour plot.
; Note: no data is used in this example, so the output appears
; only as a bounding box with tickmarks.
;
; The second frame in this example demonstrates how to produce multiple
; plots on a single frame.
;
; Begin the ncl script.
begin
; ###########
; # FRAME 1 #
; ###########
; Choose the type of output you want to create. You may write your
; output to an NCGM, file, X workstation window, or a PostScript file.
;
; Default is to display output to an X workstation
;
wks_type = "x11"
if (str_lower(wks_type).eq."ncgm")
;
; Create an NCGM workstation.
;
wks = create "wks" ncgmWorkstationClass defaultapp
"wkMetaName" : "./basic02n.ncgm"
end create
end if
if (str_lower(wks_type).eq."x11") then
;
; Create an X workstation.
;
wks = create "wks" windowWorkstationClass defaultapp
"wkPause" : "True"
end create
end if
if (str_lower(wks_type).eq."oldps") then
;
; Create an older-style PostScript workstation.
;
wks = create "wks" psWorkstationClass defaultapp
"wkPSFileName" : "./basic02n.ps"
end create
end if
if (str_lower(wks_type).eq."oldpdf") then
;
; Create an older-style PDF workstation.
;
wks = create "wks" pdfWorkstationClass defaultapp
"wkPDFFileName" : "./basic02n.pdf"
end create
end if
if (str_lower(wks_type).eq."pdf".or.str_lower(wks_type).eq."ps") then
;
; Create a cairo PS/PDF Workstation object.
;
wks = create "wks" documentWorkstationClass defaultapp
"wkFileName" : "basic02n"
"wkFormat" : wks_type
end create
end if
if (str_lower(wks_type).eq."png") then
;
; Create a cairo PNG Workstation object.
;
wks = create "wks" imageWorkstationClass defaultapp
"wkFileName" : "basic02n"
"wkFormat" : wks_type
end create
end if
; Create a plot object. In this example, we will create a contour plot.
;
; Four view class resources, vpXF, vpYF, vpWidthF, and vpHeightF, are
; assigned values in the following create call. The combination of
; these four resources determines where the plot will display in the
; output window. The values of these resources are specified in
; Normalized Device Coordinates (NDCs). In this two-dimensional coordinate
; system (0,0) specifies the lower-left corner and (1,1) specifies the
; upper-right corner of a plot.
con1 = create "con1" contourPlotClass wks
"vpXF" : 0.05 ;The left edge of the viewport bounding box
"vpYF" : 0.95 ;The top edge of the viewport bounding box
"vpWidthF" : 0.4 ;The width of the viewport bounding box
"vpHeightF" : 0.4 ;The height of the viewport bounding box
end create
; Draw the plot.
draw(con1)
; The frame call updates and then clears the workstation.
; Anything written to the workstation after a frame call is made will be
; drawn in a subsequent frame.
frame(wks)
; ###########
; # FRAME 2 #
; ###########
; This example demonstrates drawing multiple plots in a single frame.
; Calling draw again will produce the identical plot that was drawn in the
; first frame.
draw(con1)
; To add another plot to the same frame, we first need to reset the
; viewport resources so that the next plot does not overwrite the first
; one. The setvalues expression is used to set resources after an object
; has already been created. The first argument, "con1", in the setvalues
; expression specifies an object id of a plot that was generated earlier
; with the create call. This is then followed by a list of resource value
; pairs that apply to the object.
setvalues con1
"vpXF" : 0.55 ;The left edge of the viewport bounding box
"vpYF" : 0.45 ;The top edge of the viewport bounding box
"vpWidthF" : 0.2 ;The width of the viewport bounding box
"vpHeightF" : 0.2 ;The height of the viewport bounding box
end setvalues
; Because of the new viewport resource settings, calling draw produces
; a plot in the lower-right quadrant of the frame.
draw(con1)
; Updates and clear the workstation.
frame(wks)
; Clean up (deleting the parent object recursively deletes all of its
; children).
delete(wks)
; End the ncl script.
end
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