/usr/share/ncarg/hluex/contourplot/cn11c.c is in libncarg-data 6.4.0-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* $Id: cn11c.c,v 1.4 2010-03-15 22:49:23 haley Exp $
*/
/************************************************************************
* *
* Copyright (C) 1993 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
************************************************************************/
/*
* File: cn11c.c
*
* Author: Ethan Alpert
* National Center for Atmospheric Research
* PO 3000, Boulder, Colorado
*
* Date: Fri Apr 23 14:19:18 MDT 1993
*
* Description: Demonstrates how to combine LLU and HLU calls
*/
#include <stdio.h>
#include <ncarg/hlu/hlu.h>
#include <ncarg/hlu/App.h>
#include <ncarg/hlu/TickMark.h>
#include <ncarg/hlu/Title.h>
#include <ncarg/hlu/NcgmWorkstation.h>
#include <ncarg/hlu/PSWorkstation.h>
#include <ncarg/hlu/PDFWorkstation.h>
#include <ncarg/hlu/CairoWorkstation.h>
#include <ncarg/gks.h>
#include <ncarg/ncargC.h>
#include "cn11c.h"
/*
* Define label strings for EXPLICIT mode tick mark placement
*/
char *labels[] = { "90:S:o:N:S", "60:S:o:N:S", "30:S:o:N:S", "EQ",
"30:S:o:N:N", "60:S:o:N:N", "90:S:o:N:N" };
/*
* Specify data locations for above labels
*/
float labellocs[] = { -90.0, -60.0, -30.0, 0.0, 30.0, 60.0, 90.0 };
int main()
{
int appid, wid, pid, pid1, gkswid;
float rwrk[5000];
int iwrk[1000];
NhlBoundingBox thebox;
int rlist, grlist;
char const *wks_type = "x11";
/*
* 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.
*/
rlist = NhlRLCreate(NhlSETRL);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"cn11",NhlappClass,NhlDEFAULT_APP,rlist);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./cn11c.ncgm");
NhlCreate(&wid,"cn11Work",
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,"cn11Work",
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,"./cn11c.ps");
NhlCreate(&wid,"cn11Work",
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,"./cn11c.pdf");
NhlCreate(&wid,"cn11Work",
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,"./cn11c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"cn11Work",
NhlcairoDocumentWorkstationClass,NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"./cn11c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"cn11Work",
NhlcairoImageWorkstationClass,NhlDEFAULT_APP,rlist);
}
/*
* Retrieve GKS workstation id from the workstation object
*/
grlist = NhlRLCreate(NhlGETRL);
NhlRLClear(grlist);
NhlRLGetInteger(grlist,NhlNwkGksWorkId,&gkswid);
NhlGetValues(wid,grlist);
/*
* The following are calls to the low level NCAR graphics library to
* draw labeled contour lines
*/
gactivate_ws(gkswid);
c_cpseti("SET",0);
c_cpsetr("XC1",-90.0);
c_cpsetr("XCM",90.0);
c_cpsetr("YC1",0.0);
c_cpsetr("YCN",9.0);
c_cpsetr("CIS",5.0);
c_cpsetr("DPS",.02);
c_cpseti("LIS",2);
/*
* Note that Y axis user coordinates are set to grid coordinates rather than
* data coordinates. This is done because the input data is irregularly spaced
* in the Y direction. Basicly this "tricks" CONPACK into thinking the grid
* points are evenly spaced.
*/
c_set(0.2,0.8,0.2,0.8,-90.0,90.0,0.0,9.0,1);
c_cprect(T,73,73,10,rwrk,5000,iwrk,1000);
c_cpcldr(T,rwrk,iwrk);
gdeactivate_ws(gkswid);
/*
* End of NCAR graphics section. Note deactivation of GKS workstation
*/
NhlRLClear(rlist);
NhlRLSetFloat(rlist,NhlNvpXF,.2);
NhlRLSetFloat(rlist,NhlNvpYF,.8);
NhlRLSetFloat(rlist,NhlNvpWidthF,.6);
NhlRLSetFloat(rlist,NhlNvpHeightF,.6);
NhlRLSetFloat(rlist,NhlNtmYLDataTopF,100.0);
NhlRLSetFloat(rlist,NhlNtmYLDataBottomF,1000.0);
NhlRLSetFloat(rlist,NhlNtmXBDataRightF,90.0);
NhlRLSetFloat(rlist,NhlNtmXBDataLeftF,-90.0);
NhlRLSetInteger(rlist,NhlNtmYLStyle,NhlIRREGULAR);
NhlRLSetInteger(rlist,NhlNtmXBMode,NhlEXPLICIT);
NhlRLSetInteger(rlist,NhlNtmXBMinorOn,False);
NhlRLSetFloatArray(rlist,
NhlNtmXBValues,labellocs,NhlNumber(labellocs));
/*
* Array "level" contains original grid point data locations in Y direction.
* Providing the grid points to the TickMark object as the control points
* for the IRREGULAR style transformation, means that these points will be
* evenly spaced along the Y axis. Since this is how CONPACK thinks the
* points are spaced, the tick marks will correctly correspond with the
* data coordinates. See the HLU User's Guide Prototype document for a complete
* discussion of IRREGULAR style transformations.
*/
NhlRLSetStringArray(rlist,
NhlNtmXBLabels,labels,NhlNumber(labels));
NhlRLSetFloatArray(rlist,
NhlNtmYLIrregularPoints,level,NhlNumber(level));
NhlCreate(&pid,"TickMarksForContour",
NhltickMarkClass,wid,rlist);
/*
* Retrieves bounding box information from tick mark object so Title object
* can be correctly configured.
*/
NhlGetBB(pid,&thebox);
NhlRLClear(rlist);
NhlRLSetFloat(rlist,NhlNvpXF,thebox.l);
NhlRLSetFloat(rlist,NhlNvpYF,thebox.t);
NhlRLSetFloat(rlist,NhlNvpWidthF,thebox.r-thebox.l);
NhlRLSetFloat(rlist,NhlNvpHeightF,thebox.t-thebox.b);
/*
* These offsets are computed in order to center the labels around the plot
* viewport rather than the bounding box of the TickMark object.
*/
NhlRLSetFloat(rlist,NhlNtiMainOffsetXF,(.2 - thebox.l)/2.0);
NhlRLSetFloat(rlist,NhlNtiXAxisOffsetXF,(.2 - thebox.l)/2.0);
NhlRLSetFloat(rlist,NhlNtiYAxisOffsetYF,(.2 - thebox.b)/2.0);
NhlCreate(&pid1,"TitlesForContour",NhltitleClass,wid,rlist);
NhlDraw(pid);
NhlDraw(pid1);
NhlFrame(wid);
NhlDestroy(pid);
NhlDestroy(pid1);
NhlDestroy(wid);
NhlDestroy(appid);
NhlClose();
exit(0);
}
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