/usr/share/ncarg/hluex/xyplot/xy08c.c is in libncarg-data 6.3.0-6build1.
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** $Id: xy08c.c,v 1.7 2010-03-15 22:49:25 haley Exp $
*/
/************************************************************************
* *
* Copyright (C) 1995 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
************************************************************************/
/*
** File: xy08c.c
**
** Author: Mary Haley (copied from example "agex13")
** National Center for Atmospheric Research
** PO 3000, Boulder, Colorado
**
** Date: Thu Jan 26 13:56:37 MST 1995
**
** Description: This example is similar to the ncargex Autograph
** example "agex13". It shows how to use Irregular
** points to change the transformation of your plot.
*/
#include <stdio.h>
#include <math.h>
#include <ncarg/hlu/hlu.h>
#include <ncarg/hlu/ResList.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/XyPlot.h>
#include <ncarg/hlu/CoordArrTable.h>
#include <ncarg/hlu/TickMark.h>
#define NCOLORS 3
/*
* Create data arrays
*/
#define NCURVE 3
float *xcoord[NCURVE];
float *xdra[NCURVE],*ydra[NCURVE];
int len[NCURVE] = {12,37,61};
/*
* Create array for customizing the plot.
*/
float explicit_values[14];
int main()
{
int appid,xworkid,plotid,dataid;
int rlist, i, j;
ng_size_t clen[2];
float cmap[NCOLORS][3];
FILE *fp;
char const *wks_type = "x11";
/*
* Fill the data arrays.
*/
for( i = 0; i < 14; i++ ) explicit_values[i] = pow(2.,(float)(i-6));
fp = fopen("xy08.asc","r");
if (fp == (FILE *)NULL) {
NhlPError(NhlFATAL,NhlEUNKNOWN, "Cannot open data file xy08.asc" );
exit(3);
}
for( i = 0; i < NCURVE; i++ ) {
xcoord[i] = (float *)malloc(sizeof(float)*(len[i]*2));
for( j = 0; j < len[i]*2; j++ ) {
fscanf(fp,"%g",&xcoord[i][j]);
xcoord[i][j] = pow(2.,((xcoord[i][j]-15.)/2.5));
}
}
for( i = 0; i < NCURVE; i++ ) {
xdra[i] = (float *)malloc(sizeof(float)*len[i]);
ydra[i] = (float *)malloc(sizeof(float)*len[i]);
for( j = 0; j < (len[i]*2)-1; j+=2 ) {
xdra[i][j/2] = xcoord[i][j];
ydra[i][j/2] = xcoord[i][j+1];
}
}
/*
* Initialize the HLU library and set up resource template
*/
NhlInitialize();
rlist = NhlRLCreate(NhlSETRL);
/*
* Modify the color map. Color indices '0' and '1' are the background
* and foreground colors respectively.
*/
cmap[0][0] = 1.00; cmap[0][1] = 1.00; cmap[0][2] = 1.00;
cmap[1][0] = 0.00; cmap[1][1] = 0.00; cmap[1][2] = 0.00;
cmap[2][0] = 0.00; cmap[2][1] = 0.00; cmap[2][2] = 1.00;
clen[0] = NCOLORS; clen[1] = 3;
/*
* Create Application object. The Application object name is used to
* determine the name of the resource file, which is "xy08.res" in this
* case.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappDefaultParent,"True");
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"xy08",NhlappClass,NhlDEFAULT_APP,0);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file object.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./xy08c.ncgm");
NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,clen);
NhlCreate(&xworkid,"xy08Work",NhlncgmWorkstationClass,
NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"x11") || !strcmp(wks_type,"X11")) {
/*
* Create an X11 workstation.
*/
NhlRLClear(rlist);
NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,clen);
NhlRLSetInteger(rlist,NhlNwkPause,True);
NhlCreate(&xworkid,"xy08Work",NhlcairoWindowWorkstationClass,
NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"oldps") || !strcmp(wks_type,"OLDPS")) {
/*
* Create an older-style PostScript workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPSFileName,"./xy08c.ps");
NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,clen);
NhlCreate(&xworkid,"xy08Work",NhlpsWorkstationClass,
NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"oldpdf") || !strcmp(wks_type,"OLDPDF")) {
/*
* Create an older-style PDF workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPDFFileName,"./xy08c.pdf");
NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,clen);
NhlCreate(&xworkid,"xy08Work",NhlpdfWorkstationClass,
NhlDEFAULT_APP,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,"./xy08c");
NhlRLSetString(rlist,NhlNwkFormat, (char*)wks_type);
NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,clen);
NhlCreate(&xworkid,"xy08Work",NhlcairoDocumentWorkstationClass,
NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"./xy08c");
NhlRLSetString(rlist,NhlNwkFormat, (char*)wks_type);
NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,clen);
NhlCreate(&xworkid,"xy08Work",NhlcairoImageWorkstationClass,
NhlDEFAULT_APP,rlist);
}
/*
* Create a CoordArrTable object to define the data for the XyPlot
* object. The id array from this object will become the value for the
* XyPlot resource, "xyCoordData".
*/
NhlRLClear(rlist);
NhlRLSetIntegerArray(rlist,NhlNctXTableLengths,len,NCURVE);
NhlRLSetArray(rlist,NhlNctXTable,xdra,NhlTPointer,sizeof(NhlPointer),
NCURVE);
NhlRLSetIntegerArray(rlist,NhlNctYTableLengths,len,NCURVE);
NhlRLSetArray(rlist,NhlNctYTable,ydra,NhlTPointer,sizeof(NhlPointer),
NCURVE);
NhlCreate(&dataid,"xyData",NhlcoordArrTableClass,NhlDEFAULT_APP,
rlist);
/*
* Create the XyPlot object and customize tick marks.
*/
NhlRLClear(rlist);
NhlRLSetFloatArray(rlist,NhlNtmXBValues,explicit_values,
NhlNumber(explicit_values));
NhlRLSetFloatArray(rlist,NhlNtmYLValues,explicit_values,
NhlNumber(explicit_values));
NhlRLSetFloatArray(rlist,NhlNxyXIrregularPoints,explicit_values,
NhlNumber(explicit_values));
NhlRLSetFloatArray(rlist,NhlNxyYIrregularPoints,explicit_values,
NhlNumber(explicit_values));
NhlRLSetInteger(rlist,NhlNxyCoordData,dataid);
NhlCreate(&plotid,"xyPlot",NhlxyPlotClass,xworkid,rlist);
/*
* Draw the plot.
*/
NhlDraw(plotid);
NhlFrame(xworkid);
/*
* NhlDestroy destroys the given id and all of its children
* so destroying xworkwid will also destroys plotid.
*/
NhlRLDestroy(rlist);
NhlDestroy(xworkid);
NhlDestroy(appid);
/*
* Restores state.
*/
NhlClose();
exit(0);
}
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