/usr/share/ncarg/hluex/xyplot/xy04c.c is in libncarg-data 6.4.0-9.
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** $Id: xy04c.c,v 1.16 2010-03-15 22:49:25 haley Exp $
*/
/***********************************************************************
* *
* Copyright (C) 1995 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
***********************************************************************/
/*
** File: xy04c.c
**
** Author: Mary Haley
** National Center for Atmospheric Research
** PO 3000, Boulder, Colorado
**
** Date: Fri Jan 27 08:24:42 MST 1995
**
** Description: This program shows one way on how to create an XyPlot
** object with multiple lines in the plot using
** the CoordArrays object. Some of the XyPlot line
** resources are tweaked in the resource file to
** show how to change the appearance of these multiple
** lines.
**
** The "CoordArrays" object is used to set up the data,
** and the resource file is used to set up attributes
** of the data being plotted, like the line color, the
** dash patterns, and line label colors.
**
*/
#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/CoordArrays.h>
/*
* Define the number of curves and points in each curve.
*/
#define NPTS 500
#define NCURVE 4
#define NCOLORS 6
#define PI100 0.031415926535898
float ydra[NCURVE][NPTS];
char *cmap[NCOLORS] = {"black","white","red","green","blue","yellow"};
int main()
{
int appid,xworkid,plotid,dataid;
int rlist, i, j;
ng_size_t len[2];
float theta;
char const *wks_type = "x11";
/*
* Initialize data for the XyPlot object.
*/
for( j = 0; j < NCURVE; j++ ) {
for( i = 0; i < NPTS; i++ ) {
theta = PI100*(float)(i);
ydra[j][i] = (j*200.)+(i*.9)*sin(theta);
}
}
/*
* Initialize the HLU library and set up resource template.
*/
NhlInitialize();
rlist = NhlRLCreate(NhlSETRL);
/*
* Create Application object. The Application object name is used to
* determine the name of the resource file, which is "xy04.res" in
* this case.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappDefaultParent,"True");
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"xy04",NhlappClass,NhlDEFAULT_APP,rlist);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file object.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./xy04c.ncgm");
NhlRLSetStringArray(rlist,NhlNwkColorMap,cmap,NCOLORS);
NhlCreate(&xworkid,"xy04Work",NhlncgmWorkstationClass,
NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"x11") || !strcmp(wks_type,"X11")) {
/*
* Create an X11 workstation
*/
NhlRLClear(rlist);
NhlRLSetInteger(rlist,NhlNwkPause,True);
NhlRLSetStringArray(rlist,NhlNwkColorMap,cmap,NCOLORS);
NhlCreate(&xworkid,"xy04Work",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,"./xy04c.ps");
NhlRLSetStringArray(rlist,NhlNwkColorMap,cmap,NCOLORS);
NhlCreate(&xworkid,"xy04Work",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,"./xy04c.pdf");
NhlRLSetStringArray(rlist,NhlNwkColorMap,cmap,NCOLORS);
NhlCreate(&xworkid,"xy04Work",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,"./xy04c");
NhlRLSetString(rlist,NhlNwkFormat, (char*)wks_type);
NhlRLSetStringArray(rlist,NhlNwkColorMap,cmap,NCOLORS);
NhlCreate(&xworkid,"xy04Work",NhlcairoDocumentWorkstationClass,
NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"./xy04c");
NhlRLSetString(rlist,NhlNwkFormat, (char*)wks_type);
NhlRLSetStringArray(rlist,NhlNwkColorMap,cmap,NCOLORS);
NhlCreate(&xworkid,"xy04Work",NhlcairoImageWorkstationClass,
NhlDEFAULT_APP,rlist);
}
/*
* Define the "CoordArrays" object. Since only the Y values are
* specified here, each Y value will be paired with its integer
* array index. The id for this object will then later be used as
* the value for the Data Dep resource, "dsDataItem".
*/
len[0] = NCURVE; len[1] = NPTS;
NhlRLClear(rlist);
NhlRLSetMDFloatArray(rlist,NhlNcaYArray,&ydra[0][0],2,len);
NhlCreate(&dataid,"xyData",NhlcoordArraysClass,NhlDEFAULT_APP,
rlist);
/*
* This new DataItem object is now the resource value for xyCoordData.
* Tweak some XyPlot resources as well (in the resource file).
* Also tweak some XyDataSpec resources in the resource file.
* When Data is added to an XyPlot object, an XyDataSpec object is
* created internally to the XyPlot. It has the same name as the Data
* object that is added, and so you can set XyDataSpec (XyPlot Data
* Specific) resources for each piece of data added to the xyCoordData
* resource.
*
* Create the XyPlot object which is created as a child of the
* workstation object. The resources that are being
* changed are done in the "xy04.res" file.
*/
NhlRLClear(rlist);
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 "xworkid" will also destroy "plotid".
*/
NhlRLDestroy(rlist);
NhlDestroy(xworkid);
NhlDestroy(appid);
/*
* Restores state.
*/
NhlClose();
exit(0);
}
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