/usr/share/ncarg/hluex/streamlineplot/st01c.c is in libncarg-data 6.3.0-6build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /*
* $Id: st01c.c,v 1.5 2010-03-15 22:49:24 haley Exp $
*/
/***********************************************************************
* *
* Copyright (C) 1996 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
***********************************************************************/
/*
* File: st01c.c
*
* Author: David Brown
* National Center for Atmospheric Research
* PO 3000, Boulder, Colorado
*
* Date: Wed Apr 3 17:00:55 MST 1996
*
* Description: Basic StreamlinePlot example
*/
#include <math.h>
#include <ncarg/gks.h>
#include <ncarg/ncargC.h>
#include <ncarg/hlu/hlu.h>
#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/StreamlinePlot.h>
#define N 30
#define M 25
#define PI 3.14159
int main(int argc, char *argv[])
{
char const *wks_type = "x11";
int appid,wid,stid,vfid;
int rlist;
ng_size_t len_dims[2];
float U[N][M],V[N][M];
/*
* Generate vector data arrays
*/
{
float igrid, jgrid;
int i,j;
igrid = 2.0 * PI / (float) M;
jgrid = 2.0 * PI / (float) N;
for (j = 0; j < N; j++) {
for (i = 0; i < M; i++) {
U[j][i] = 10.0 * cos(jgrid * (float) j);
V[j][i] = 10.0 * cos(igrid * (float) i);
}
}
}
/*
* 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.
*/
rlist = NhlRLCreate(NhlSETRL);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"st01",NhlappClass,NhlDEFAULT_APP,rlist);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./st01c.ncgm");
NhlCreate(&wid,"st01Work",
NhlncgmWorkstationClass,NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"x11") || !strcmp(wks_type,"X11")) {
/*
* Create an X workstation.
*/
NhlRLClear(rlist);
NhlRLSetInteger(rlist,NhlNwkPause,True);
NhlCreate(&wid,"st01Work",NhlcairoWindowWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"oldps") || !strcmp(wks_type,"OLDPS")) {
/*
* Create an older-style PostScript workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPSFileName,"st01c.ps");
NhlCreate(&wid,"st01Work",NhlpsWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"oldpdf") || !strcmp(wks_type,"OLDPDF")) {
/*
* Create an older-style PDF workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPDFFileName,"st01c.pdf");
NhlCreate(&wid,"st01Work",NhlpdfWorkstationClass,appid,rlist);
}
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(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"st01c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"st01Work",NhlcairoDocumentWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"st01c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"st01Work",NhlcairoImageWorkstationClass,appid,rlist);
}
/*
* Create a VectorField object; then use its id as the value of
* the 'stVectorFieldData' resource when creating the StreamlinePlot object.
*/
len_dims[0] = N;
len_dims[1] = M;
NhlRLClear(rlist);
NhlRLSetMDFloatArray(rlist,NhlNvfUDataArray,&U[0][0],2,len_dims);
NhlRLSetMDFloatArray(rlist,NhlNvfVDataArray,&V[0][0],2,len_dims);
NhlCreate(&vfid,"vectorfield",NhlvectorFieldClass,appid,rlist);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,"Basic StreamlinePlot Example");
NhlRLSetInteger(rlist,NhlNstVectorFieldData,vfid);
NhlCreate(&stid,"streamline",NhlstreamlinePlotClass,wid,rlist);
NhlDraw(stid);
NhlFrame(wid);
/*
* Destroy the objects created, close the HLU library and exit.
*/
NhlDestroy(appid);
NhlClose();
exit(0);
}
|