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C $Id: cn01f.f,v 1.12 2010-03-15 22:49:23 haley Exp $
C
C***********************************************************************
C *
C Copyright (C) 1995 *
C University Corporation for Atmospheric Research *
C All Rights Reserved *
C *
C***********************************************************************
C
C File: cn01f.f
C
C Author: Dave Brown (converted to Fortran by Mary Haley)
C National Center for Atmospheric Research
C PO 3000, Boulder, Colorado
C
C Date: Tue Jan 24 09:34:23 MST 1995
C
C Description: Given a simple mathematically generated data
C set, demonstrates ContourPlot with all resources
C (other thancnScalarFieldData) set to their
C default value.
C
C
C Extern declarations for Types of objects that will be used
C
external NhlFAppClass
external NhlFNcgmWorkstationClass
external NhlFPSWorkstationClass
external NhlFPDFWorkstationClass
external NhlFCairoPSPDFWorkstationClass
external NhlFCairoImageWorkstationClass
external NhlFCairoWindowWorkstationClass
external nhlfscalarfieldclass
external nhlfcontourplotclass
parameter(M=25,N=25)
parameter(PI=3.14159)
real t(625)
integer len_dims(2)
integer appid,wid,dataid,cnid
integer srlist
real x,y
integer i,j
character*7 wks_type
C
C Default is to display output to an X workstation
C
wks_type = "x11"
C
C Create a simple bull's eye pattern test data set
C
ii = 1
do 20 i = -N/2,N/2
do 10 j = -M/2,M/2
x = 8.0 * i
y = 8.0 * j
t(ii) = 100.0 - sqrt(x*x + y*y)
ii = ii + 1
10 continue
20 continue
C
C Initialize the high level utility library
C
call NhlFInitialize
C
C Create an application context. Set the app dir to the current dir
C so the application looks for a resource file in the working directory.
C In this example the resource file supplies the plot title only.
C
call NhlFRLCreate(srlist,'SETRL')
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'appUsrDir','./',ierr)
call NhlFCreate(appid,'cn01',NhlFAppClass,0,srlist,ierr)
if (wks_type.eq."ncgm".or.wks_type.eq."NCGM") then
C
C Create an NCGM workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'wkMetaName','./cn01f.ncgm',ierr)
call NhlFCreate(wid,'cn01Work',NhlFNcgmWorkstationClass,
1 0,srlist,ierr)
else if (wks_type.eq."x11".or.wks_type.eq."X11") then
C
C Create an X workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'wkPause','True',ierr)
call NhlFCreate(wid,'cn01Work',
+ NhlFCairoWindowWorkstationClass,
1 0,srlist,ierr)
else if (wks_type.eq."oldps".or.wks_type.eq."OLDPS") then
C
C Create an older-style PostScript workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'wkPSFileName','./cn01f.ps',ierr)
call NhlFCreate(wid,'cn01Work',NhlFPSWorkstationClass,
1 0,srlist,ierr)
else if (wks_type.eq."oldpdf".or.wks_type.eq."OLDPDF") then
C
C Create an older-style PDF workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'wkPDFFileName','./cn01f.pdf',ierr)
call NhlFCreate(wid,'cn01Work',NhlFPDFWorkstationClass,
1 0,srlist,ierr)
else 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 object.
C
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'wkFileName','./cn01f',ierr)
call NhlFRLSetstring(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(wid,'cn01Work',NhlFCairoPSPDFWorkstationClass,
1 0,srlist,ierr)
else if (wks_type.eq."png".or.wks_type.eq."PNG") then
C
C Create a cairo PNG object.
C
call NhlFRLClear(srlist)
call NhlFRLSetstring(srlist,'wkFileName','./cn01f',ierr)
call NhlFRLSetstring(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(wid,'cn01Work',NhlFCairoImageWorkstationClass,
1 0,srlist,ierr)
endif
C
C Create a ScalarField data object using the data set defined above.
C By default the array bounds will define the data boundaries
C (zero-based, as in C language conventions)
C
call NhlFRLClear(srlist)
len_dims(1) = N
len_dims(2) = M
call NhlFRLSetmdfloatarray(srlist,'sfDataArray',t,2,len_dims,ierr)
call NhlFCreate(dataid,'bullseye',nhlfscalarfieldclass,
1 appid, srlist,ierr)
C
C Create a ContourPlot object, supplying the ScalarField object as data
C
call NhlFRLClear(srlist)
call NhlFRLSetinteger(srlist,'cnScalarFieldData',dataid,ierr)
call NhlFCreate(cnid,'ContourPlot1',nhlfcontourplotclass,
1 wid,srlist,ierr)
C
C Draw a plot illustrating the basic default behavior of
C the ContourPlot object. The contours appear as solid lines with
C unboxed labels in a linear coordinate system with the origin at
C the lower left. Tickmarks with labels show the data coordinate
C range, and an informational label at the lower right gives the
C minimum and maximum data values and the contour interval spacing.
C
call NhlFDraw(cnid,ierr)
call NhlFFrame(wid,ierr)
C
C Destroy the objects created, close the HLU library and exit.
C
call NhlFDestroy(dataid,ierr)
call NhlFDestroy(cnid,ierr)
call NhlFDestroy(wid,ierr)
call NhlFDestroy(appid,ierr)
call NhlFClose
stop
end
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