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C C
C Copyright (C) 1995 C
C University Corporation for Atmospheric Research C
C All Rights Reserved C
C C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C File: basic06f.f
C
C Author: Fred Clare
C National Center for Atmospheric Research
C PO 3000, Boulder, Colorado
C
C
C Date: Wed May 24 12:54:47 MDT 1995
C
C Description: This Fortran program demonstrates how to position
C objects on an output device and how to change
C their sizes. A simple color table is also defined
C and used for changing the color of a curve in an
C XyPlot. The script begins with two procedures -
C one for drawing plot objects and one for drawing
C text objects.
C
program basic06
implicit none
external NhlFAppClass
external NhlFNcgmWorkstationClass
external NhlFPSWorkstationClass
external NhlFPDFWorkstationClass
external NhlFCairoPSPDFWorkstationClass
external NhlFCairoImageWorkstationClass
external NhlFCairoWindowWorkstationClass
external NhlFXyPlotClass
external NhlFCoordArraysClass
external NhlFTickMarkClass
external NhlFTextItemClass
integer appid,rlist
integer xwork_id,text_id,box_id,data_id
integer dataspec
CHARACTER*7 wks_type
integer i,ierr
character*5 text
data text /'Box '/
real xdra(9),ydra(9)
real xpos,ypos
data xdra / 0.0, 0.1, 0.5, 0.9, 1.0, 0.9, 0.5, 0.1, 0.0 /
data ydra / 0.5, 0.9, 1.0, 0.9, 0.5, 0.1, 0.0, 0.1, 0.5 /
C
C Define a simple color map (index 0 defines the background color).
C
real cmap(3,4)
data cmap / 1.0, 1.0, 1.0,
1 0.0, 0.0, 1.0,
2 0.0, 1.0, 0.0,
3 1.0, 0.0, 0.0 /
integer dims(2)
data dims / 3,4 /
C
C Define the workstation type
C
wks_type = "x11"
C
C Initialize the high level utility library and create application.
C
call NhlFInitialize
call NhlFRLCreate(rlist,'SETRL')
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'appUsrDir','./',ierr)
call NhlFCreate(appid,'basic06',NhlFappClass,0,rlist,ierr)
if (wks_type.eq."ncgm".or.wks_type.eq."NCGM") then
C
C Create a meta file workstation.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'wkMetaName',
1 './basic06f.ncgm',ierr)
call NhlFRLSetMDFloatArray(rlist,'wkColorMap',
1 cmap,2,dims,ierr)
call NhlFCreate(xwork_id,'simple',
1 NhlFncgmWorkstationClass,0,rlist,ierr)
else if (wks_type.eq."x11".or.wks_type.eq."X11") then
C
C Create an X workstation.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'wkPause','True',ierr)
call NhlFRLSetMDFloatArray(rlist,'wkColorMap',
1 cmap,2,dims,ierr)
call NhlFCreate(xwork_id,'simple',
1 NhlFCairoWindowWorkstationClass,
1 0,rlist,ierr)
else if (wks_type.eq."oldps".or.wks_type.eq."OLDPS") then
C
C Create an older-style PostScript workstation.
C
call NhlFRLClear(rlist)
call NhlFRLSetstring(rlist,'wkPSFileName','./basic06f.ps',ierr)
call NhlFRLSetMDFloatArray(rlist,'wkColorMap',
1 cmap,2,dims,ierr)
call NhlFCreate(xwork_id,'simple',
1 NhlFPSWorkstationClass,0,rlist,ierr)
else if (wks_type.eq."oldpdf".or.wks_type.eq."OLDPDF") then
C
C Create an older-style PDF workstation.
C
call NhlFRLClear(rlist)
call NhlFRLSetstring(rlist,'wkPDFFileName','./basic06f.pdf',
1 ierr)
call NhlFRLSetMDFloatArray(rlist,'wkColorMap',
1 cmap,2,dims,ierr)
call NhlFCreate(xwork_id,'simple',
1 NhlFPDFWorkstationClass,0,rlist,ierr)
endif
if (wks_type.eq."pdf".or.wks_type.eq."PDF".or.
& wks_type.eq."ps".or.wks_type.eq."PS") then
C
C Create a cairo PS/PDF workstation.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'wkFileName',
& './basic06f',ierr)
call NhlFRLSetString(rlist,'wkFormat',wks_type,ierr)
call NhlFRLSetMDFloatArray(rlist,'wkColorMap',
1 cmap,2,dims,ierr)
call NhlFCreate(xwork_id,'simple',
& NhlFCairoPSPDFWorkstationClass,0,rlist,ierr)
endif
if (wks_type.eq."png".or.wks_type.eq."PNG") then
C
C Create a cairo PNG workstation.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'wkFileName',
& './basic06f',ierr)
call NhlFRLSetString(rlist,'wkFormat',wks_type,ierr)
call NhlFRLSetMDFloatArray(rlist,'wkColorMap',
1 cmap,2,dims,ierr)
call NhlFCreate(xwork_id,'simple',
& NhlFCairoImageWorkstationClass,0,rlist,ierr)
endif
C
C Create data object for an XyPlot
C
call NhlFRLClear(rlist)
call NhlFRLSetFloatArray(rlist,'caXArray',xdra,
1 9,ierr)
call NhlFRLSetFloatArray(rlist,'caYArray',ydra,
1 9,ierr)
call NhlFCreate(data_id,'xyData',NhlFcoordArraysClass,
1 0,rlist,ierr)
C
C Create a simple XyPlot object with no labels or borders. The
C parent for this object is xwork_id, hence it will be sent to
C the workstation identified by xwork_id when the draw procedure
C is invoked on it.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'tmXBBorderOn','False',ierr)
call NhlFRLSetString(rlist,'tmXTBorderOn','False',ierr)
call NhlFRLSetString(rlist,'tmYLBorderOn','False',ierr)
call NhlFRLSetString(rlist,'tmYRBorderOn','False',ierr)
call NhlFRLSetString(rlist,'tmXBOn','False',ierr)
call NhlFRLSetString(rlist,'tmXTOn','False',ierr)
call NhlFRLSetString(rlist,'tmYLOn','False',ierr)
call NhlFRLSetString(rlist,'tmYROn','False',ierr)
call NhlFRLSetFloat(rlist,'vpXF',0.0,ierr)
call NhlFRLSetFloat(rlist,'vpYF',1.0,ierr)
call NhlFRLSetFloat(rlist,'vpWidthF',1.0,ierr)
call NhlFRLSetFloat(rlist,'vpHeightF',1.0,ierr)
call NhlFCreate(box_id,'Box',NhlFxyPlotClass,xwork_id,
1 rlist,ierr)
C
C Create a TextItem object.
C
call NhlFRLClear(rlist)
call NhlFRLSetFloat(rlist,'txPosXF',0.5,ierr)
call NhlFRLSetFloat(rlist,'txPosYF',0.5,ierr)
call NhlFRLSetInteger(rlist,'txFont',26,ierr)
call NhlFCreate(text_id,'Text',NhlFtextItemClass,xwork_id,
1 rlist,ierr)
C
C Add the data identified by data_id to the XyPlot.
C
call NhlFAddData(box_id,'xyCoordData',data_id,dataspec)
C
C Draw three labeled boxes at different sizes and in different positions
C and with different colors.
C
do 10 i=1,3
xpos = -0.05*i*i + 0.5*i - 0.20
ypos = 1.0-xpos
text(5:5) = char(ichar('1')+i-1)
C
C Specify a text string and its color.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'txString',text,ierr)
call NhlFRLSetInteger(rlist,'txFontColor',4-i,ierr)
call NhlFSetValues(text_id,rlist,ierr)
C
C Set the XyPlot curve color.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'xyMonoLineColor','True',ierr)
call NhlFRLSetInteger(rlist,'xyLineColor',i,ierr)
call NhlFSetValues(dataspec,rlist,ierr)
C
C Draw box and text.
C
call draw_plot(box_id, xpos, ypos, 0.36-0.09*(i-1),ierr)
call draw_text(text_id, xpos, ypos, 0.08-0.02*(i-1),ierr)
10 continue
call NhlFFrame(xwork_id,ierr)
call NhlFDestroy(xwork_id,ierr)
call NhlFClose
stop
end
subroutine draw_plot(id,x,y,scale,ierr)
C
C This procedure takes the plot object with identifier 'id' and
C draws it centered at coordinate (x,y) and scaled by 'scale'.
C The original plot object is returned unchanged.
C
integer id
real x,y,scale
integer rlist,grlist,ierr
real x_ref,y_ref,width_ref,height_ref
call NhlFRLCreate(rlist,'SETRL')
call NhlFRLCreate(grlist,'GETRL')
call NhlFRLClear(grlist)
call NhlFRLGetFloat(grlist,'vpXF',x_ref,ierr)
call NhlFRLGetFloat(grlist,'vpYF',y_ref,ierr)
call NhlFRLGetFloat(grlist,'vpWidthF',width_ref,ierr)
call NhlFRLGetFloat(grlist,'vpHeightF',height_ref,ierr)
call NhlFGetValues(id,grlist,ierr)
call NhlFRLClear(rlist)
call NhlFRLSetFloat(rlist,'vpXF',x - 0.5*width_ref*scale,ierr)
call NhlFRLSetFloat(rlist,'vpYF',y + 0.5*height_ref*scale,ierr)
call NhlFRLSetFloat(rlist,'vpWidthF',width_ref*scale,ierr)
call NhlFRLSetFloat(rlist,'vpHeightF',height_ref*scale,ierr)
call NhlFSetValues(id,rlist,ierr)
call NhlFDraw(id,ierr)
call NhlFRLClear(rlist)
call NhlFRLSetFloat(rlist,'vpXF',x_ref,ierr)
call NhlFRLSetFloat(rlist,'vpYF',y_ref,ierr)
call NhlFRLSetFloat(rlist,'vpWidthF',width_ref,ierr)
call NhlFRLSetFloat(rlist,'vpHeightF',height_ref,ierr)
call NhlFSetValues(id,rlist,ierr)
return
end
subroutine draw_text(id,x,y,height,ierr)
C
C This procedure takes the text string in the object identified by 'id'
C and draws it centered at coordinate (x,y) with a height of 'height'.
C
integer id
real x,y,height
integer rlist,grlist,ierr
real xpos,ypos,fheight
call NhlFRLCreate(rlist,'SETRL')
call NhlFRLCreate(grlist,'GETRL')
call NhlFRLClear(grlist)
call NhlFRLGetFloat(grlist,'txPosXF',xpos,ierr)
call NhlFRLGetFloat(grlist,'txPosYF',ypos,ierr)
call NhlFRLGetFloat(grlist,'txFontHeightF',fheight,ierr)
call NhlFGetValues(id,grlist,ierr)
call NhlFRLClear(rlist)
call NhlFRLSetFloat(rlist,'txPosXF',x,ierr)
call NhlFRLSetFloat(rlist,'txPosYF',y,ierr)
call NhlFRLSetFloat(rlist,'txFontHeightF',height,ierr)
call NhlFSetValues(id,rlist,ierr)
call NhlFDraw(id,ierr)
call NhlFRLClear(rlist)
call NhlFRLSetFloat(rlist,'txPosXF',xpos,ierr)
call NhlFRLSetFloat(rlist,'txPosYF',ypos,ierr)
call NhlFRLSetFloat(rlist,'txFontHeightF',fheight,ierr)
call NhlFSetValues(id,rlist,ierr)
return
end
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