/usr/share/ncarg/hluex/ngmath/nm06c.c is in libncarg-data 6.4.0-9.
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* $Id: nm06c.c,v 1.7 2010-03-15 22:49:24 haley Exp $
*/
/************************************************************************
* *
* Copyright (C) 1997 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
************************************************************************/
/*
* File: nm06c.c
*
* Author: Mary Haley (taken from one of Fred Clare's examples)
* National Center for Atmospheric Research
* PO 3000, Boulder, Colorado
*
* Date: Tue Dec 16 08:28:46 MST 1997
*
* Description: Smoothing in a simple 2D interpolation.
*/
#include <stdio.h>
#include <ncarg/ncargC.h>
#include <ncarg/gks.h>
#include <ncarg/ngmath.h>
#include <math.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>
#define NUM 171
#define NX 21
#define NY 21
int main()
{
int i, j, ier;
float xi[NUM], yi[NUM], zi[NUM];
float xo[NX], yo[NY], *output, output2[NX][NY], outr[NY][NX];
float xminin = -0.2, yminin = -0.2, xmaxin = 1.2, ymaxin = 1.2;
float xminot = 0.0, yminot = 0.0, xmaxot = 1.0, ymaxot = 1.0;
float rho = 3., theta = -54., phi = 32.;
int appid,wid,gkswid;
int srlist, grlist;
const char *wks_type = "ncgm";
/*
* Create random data in three space and define a function.
*/
for (i = 0; i < NUM; i++) {
xi[i] = xminin+(xmaxin-xminin)*((float) rand() / (float) RAND_MAX);
yi[i] = yminin+(ymaxin-yminin)*((float) rand() / (float) RAND_MAX);
zi[i] = (xi[i]-0.25)*(xi[i]-0.25) + (yi[i]-0.50)*(yi[i]-0.50);
}
/*
* Create the output grid.
*/
for (i = 0; i < NX; i++) {
xo[i] = xminot + ( (float) i / (float) (NX-1)) * (xmaxot-xminot);
}
for (j = 0; j < NY; j++) {
yo[j] = yminot + ( (float) j / (float) (NY-1)) * (ymaxot-yminot);
}
/*
* Interpolate using c_dsgrid2s.
*/
output = c_dsgrid2s(NUM, xi, yi, zi, NX, NY, xo, yo, &ier);
if (ier != 0) {
printf(" Error %d returned from nm06c\n",ier);
exit(1);
}
/*
* Interpolate using c_dspnt2s.
*/
for( i = 0; i < NX; i++ ) {
for( j = 0; j < NY; j++ ) {
c_dspnt2s(NUM, xi, yi, zi, 1, &xo[i], &yo[j], &output2[i][j], &ier);
}
}
if (ier != 0) {
printf(" Error %d returned from nm06c\n",ier);
exit(1);
}
/*
* 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);
grlist = NhlRLCreate(NhlGETRL);
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"nm06",NhlappClass,NhlDEFAULT_APP,srlist);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkMetaName,"./nm06c.ncgm");
NhlCreate(&wid,"nm06Work",
NhlncgmWorkstationClass,NhlDEFAULT_APP,srlist);
}
else if (!strcmp(wks_type,"x11") || !strcmp(wks_type,"X11")) {
/*
* Create an X workstation.
*/
NhlRLClear(srlist);
NhlRLSetInteger(srlist,NhlNwkPause,True);
NhlCreate(&wid,"nm06Work",NhlcairoWindowWorkstationClass,NhlDEFAULT_APP,srlist);
}
else if (!strcmp(wks_type,"oldps") || !strcmp(wks_type,"OLDPS")) {
/*
* Create an older-style PostScript workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkPSFileName,"./nm06c.ps");
NhlCreate(&wid,"nm06Work",NhlpsWorkstationClass,NhlDEFAULT_APP,srlist);
}
else if (!strcmp(wks_type,"oldpdf") || !strcmp(wks_type,"OLDPDF")) {
/*
* Create an older-style PDF workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkPDFFileName,"./nm06c.pdf");
NhlCreate(&wid,"nm06Work",NhlpdfWorkstationClass,NhlDEFAULT_APP,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,"./nm06c");
NhlRLSetString(srlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"nm06Work",NhlcairoDocumentWorkstationClass,NhlDEFAULT_APP,srlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(srlist);
NhlRLSetString(srlist,NhlNwkFileName,"./nm06c");
NhlRLSetString(srlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"nm06Work",NhlcairoImageWorkstationClass,NhlDEFAULT_APP,srlist);
}
/*
* Get Workstation ID.
*/
NhlRLClear(grlist);
NhlRLGetInteger(grlist,NhlNwkGksWorkId,&gkswid);
NhlGetValues(wid,grlist);
/*
* There's no HLU object for surface plots yet, so we need to call the
* LLUs to get a surface plot.
*/
/*
* Reverse the array indices for plotting with tdez2d, since
* c_dsgrid returns its array in column dominate order.
*/
for (i = 0; i < NX; i++) {
for (j = 0; j < NY; j++) {
outr[j][i] = output[i*NY+j];
}
}
gactivate_ws (gkswid);
c_tdez2d(NX, NY, xo, yo, &outr[0][0], rho, theta, phi, 6);
gdeactivate_ws (gkswid);
NhlFrame(wid);
for (i = 0; i < NX; i++) {
for (j = 0; j < NY; j++) {
outr[j][i] = output2[i][j];
}
}
gactivate_ws (gkswid);
c_tdez2d(NX, NY, xo, yo, &outr[0][0], rho, theta, phi, 6);
gdeactivate_ws (gkswid);
NhlFrame(wid);
/*
* NhlDestroy destroys the given id and all of its children.
*/
NhlDestroy(wid);
/*
* Restores state.
*/
NhlClose();
exit(0);
}
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