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C $Id: basic04f.f,v 1.9 1995-06-29 00:06:53 scheitln Exp $
C
C***********************************************************************
C *
C Copyright (C) 1995 *
C University Corporation for Atmospheric Research *
C All Rights Reserved *
C *
C***********************************************************************
C
C File: basic04f.f
C
C Author: Tim Scheitlin (converted by Ed Stautler)
C National Center for Atmospheric Research
C PO 3000, Boulder, Colorado
C
C Date: Mon Mar 20 10:43:42 MST 1995
C
C Description: This example demonstrates how to select and
C change the workstation device for drawing your
C output to an NCGM file or an X workstation
C window using the following steps.
C
C 1. Create output workstation objects.
C 2. Create the data for the plots.
C 3. Create the contour object.
C 4. Draw the contour object.
C 5. Call frame.
C 6. Change workstations.
C 7. Draw the contour object.
C 8. Call frame.
C 9. Clean up memory.
C
program basic04f
implicit none
external NhlFAppClass
external NhlFCairoWindowWorkstationClass
external NhlFNcgmWorkstationClass
external NhlFContourPlotClass
external NhlFScalarFieldClass
integer appid,nwks,xwks,xcon,field1,rlist,ierr
integer data1(5,5)
data data1 / 3,4,4,5,5,
$ 2,3,5,5,4,
$ 2,4,5,4,4,
$ 3,4,4,4,3,
$ 3,3,3,3,3 /
integer dims(2)
data dims / 5, 5 /
C
C ##########
C # STEP 1 #
C ##########
C Initialize the graphics libraries and create a resource list that
C is normally used to assign name/value pairs within objects. Then
C clear (empty) this list, and create an application object. This
C object manages multiple resource databases used by separate objects.
C
call NhlFInitialize
call NhlFRLCreate(rlist,'SETRL')
call NhlFRLClear(rlist)
call NhlFCreate(appid,'appid',NhlFAppClass,0,
$ rlist,ierr)
C
C ##########
C # STEP 2 #
C ##########
C For each type of output you must create a workstation object using
C create. The first argument, xwks, is a variable that identifies the
C object. The second argument, "xwks", to the create call sets the
C name of the object being created. The third argument,
C "NhlFCairoWindowWorkstationClass" or "NhlFNcgmWorkstationClass"
C identifies the type or class of the object to create. In this case
C an X workstation or an NCGM workstation. The fourth argument, 0,
C specifies the id of the objects parent. In this case, the object
C has no parent, so the constant 0 is used. The fifth argument,
C "rlist", is the resource list modifiers to be used when creating
C the object. The final argument, ierr, is used to return an error code.
C
call NhlFRLClear(rlist)
call NhlFCreate(xwks,'xwks',NhlFCairoWindowWorkstationClass,0,
$ rlist,ierr)
C
C The resource, wkMetaName, lets you specify the name of the output NCGM
C file. In this example, it is called basic04f.ncgm. If omitted, the
C default name, gmeta, will be used.
C
call NhlFRLClear(rlist)
call NhlFRLSetString(rlist,'wkMetaName','basic04f.ncgm',ierr)
call NhlFCreate(nwks,'nwks',NhlFNcgmWorkstationClass,0,
$ rlist,ierr)
C
C Create a scalar field object that will be used as a data set for a
C contour object. The sfDataArray resource is used to assign a data
C array to a scalar field data object.
C
call NhlFRLClear(rlist)
call NhlFRLSetMDIntegerArray(rlist,'sfDataArray',data1,2,
$ dims,ierr)
call NhlFCreate(field1,'field1',NhlFScalarFieldClass,0,
$ rlist,ierr)
C
C ##########
C # STEP 3 #
C ##########
C Create the object(s) you want to draw.
C
C Create a contour object to draw into the X workstation.
C Assign data using the cnScalarFieldData resource.
C
call NhlFRLClear(rlist)
call NhlFRLSetInteger(rlist,'cnScalarFieldData',field1,ierr)
call NhlFCreate(xcon,'xcon',NhlFContourPlotClass,xwks,
$ rlist,ierr)
C
C ##########
C # STEP 4 #
C ##########
C Draw the object
C
call NhlFDraw(xcon,ierr)
C
C ##########
C # STEP 5 #
C ##########
C Call frame to update and clear the workstations
C
call NhlFFrame(xwks,ierr)
C
C ##########
C # STEP 6 #
C ##########
C Change workstations.
call NhlFChangeWorkstation(xcon, nwks, ierr)
C
C ##########
C # STEP 7 #
C ##########
C Draw the object.
call NhlFDraw(xcon,ierr)
C
C ##########
C # STEP 8 #
C ##########
C Call frame.
call NhlFFrame(nwks,ierr)
C
C ##########
C # STEP 9 #
C ##########
C Clean up memory.
C
call NhlFDestroy(xwks,ierr)
call NhlFDestroy(nwks,ierr)
call NhlFClose
stop
end
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