/usr/share/ncarg/hluex/contourplot/cn01c.c is in libncarg-data 6.4.0-9.
This file is owned by root:root, with mode 0o644.
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* $Id: cn01c.c,v 1.10 2010-03-15 22:49:23 haley Exp $
*/
/************************************************************************
* *
* Copyright (C) 1993 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
************************************************************************/
/*
* File: cn01c.c
*
* Author: David Brown
* National Center for Atmospheric Research
* PO 3000, Boulder, Colorado
*
* Date: Tue Oct 4 18:48:08 MDT 1994
*
* Description: Given a simple mathematically generated data set,
* demonstrates ContourPlot with all resources (other than
* cnScalarFieldData) set to their default value.
*/
#include <math.h>
#include <stdio.h>
#include <ncarg/gks.h>
#include <ncarg/ncargC.h>
#include <ncarg/hlu/hlu.h>
/*
* Include a header file for each object created
*/
#include <ncarg/hlu/App.h>
#include <ncarg/hlu/NcgmWorkstation.h>
#include <ncarg/hlu/PSWorkstation.h>
#include <ncarg/hlu/PDFWorkstation.h>
#include <ncarg/hlu/CairoWorkstation.h>
#include <ncarg/hlu/ScalarField.h>
#include <ncarg/hlu/ContourPlot.h>
static const int M=25, N=25;
int main(int argc, char *argv[])
{
float T[25 * 25];
ng_size_t len_dims[2];
int appid,wid,dataid,cnid;
int srlist;
float x,y;
int i,j;
char const *wks_type = "x11";
/* create a simple bull's eye pattern test data set */
#define PI 3.14159
for (i=-N/2;i<=N/2;i++) {
for (j=-M/2;j<=M/2;j++) {
x = 8.0 * i;
y = 8.0 * j;
*(T+(M*(i+N/2)+j+M/2)) =
100.0 - sqrt((double)(x*x + y*y));
}
}
/*
* Initialize the high level utility library
*/
NhlInitialize();
/*
* Create an application context. Set the app dir to the current directory
* so the application looks for a resource file in the working directory.
* In this example the resource file supplies the plot title only.
*/
srlist = NhlRLCreate(NhlSETRL);
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"cn01",NhlappClass,NhlDEFAULT_APP,srlist);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkMetaName,"./cn01c.ncgm");
NhlCreate(&wid,"cn01Work",
NhlncgmWorkstationClass,appid,srlist);
}
else if (!strcmp(wks_type,"x11") || !strcmp(wks_type,"X11")) {
/*
* Create an X workstation.
*/
NhlRLClear(srlist);
NhlRLSetInteger(srlist,NhlNwkPause,True);
NhlCreate(&wid,"cn01Work",NhlcairoWindowWorkstationClass,appid,srlist);
}
else if (!strcmp(wks_type,"oldps") || !strcmp(wks_type,"OLDPS")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkPSFileName,"./cn01c.ps");
NhlCreate(&wid,"cn01Work",NhlpsWorkstationClass,appid,srlist);
}
else if (!strcmp(wks_type,"oldpdf") || !strcmp(wks_type,"OLDPDF")) {
/*
* Create an older-style PDF workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkPDFFileName,"./cn01c.pdf");
NhlCreate(&wid,"cn01Work",NhlpdfWorkstationClass,appid,srlist);
}
else if (!strcmp(wks_type,"pdf") || !strcmp(wks_type,"PDF") ||
!strcmp(wks_type,"ps") || !strcmp(wks_type,"PS")) {
/*
* Create a cairo PS/PDF workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkFileName,"./cn01c");
NhlRLSetString(srlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"cn01Work",NhlcairoDocumentWorkstationClass,appid,srlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkFileName,"./cn01c");
NhlRLSetString(srlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"cn01Work",NhlcairoImageWorkstationClass,appid,srlist);
}
/*
* Create a ScalarField data object using the data set defined above.
* By default the array bounds will define the data boundaries (zero-based,
* as in C language conventions)
*/
NhlRLClear(srlist);
len_dims[0] = N;
len_dims[1] = M;
NhlRLSetMDFloatArray(srlist,NhlNsfDataArray,T,2,len_dims);
NhlCreate(&dataid,"bullseye",NhlscalarFieldClass,appid,
srlist);
/*
* Create a ContourPlot object, supplying the ScalarField object as data
*/
NhlRLClear(srlist);
NhlRLSetInteger(srlist,NhlNcnScalarFieldData,dataid);
NhlCreate(&cnid,"ContourPlot1",NhlcontourPlotClass,wid,srlist);
/*
* Draw a plot illustrating the basic default behavior of
* the ContourPlot object. The contours appear as solid lines with unboxed
* labels in a linear coordinate system with the origin at the lower left.
* Tickmarks with labels show the data coordinate range, and an
* informational label at the lower right gives the minimum and maximum
* data values and the contour interval spacing.
*/
NhlDraw(cnid);
NhlFrame(wid);
NhlDestroy(dataid);
/*
* Destroy the objects created, close the HLU library and exit.
*/
NhlDestroy(cnid);
NhlDestroy(wid);
NhlDestroy(appid);
NhlClose();
exit(0);
}
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