/*
* $Id: cn03c.c,v 1.5 1995/06/27 00:47:51 dbrown Exp $
*/
/************************************************************************
* *
* Copyright (C) 1993 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
************************************************************************/
/*
* File: cn03c.c
*
* Author: David Brown
* National Center for Atmospheric Research
* PO 3000, Boulder, Colorado
*
* Date: Mon Oct 3 11:35:03 MDT 1994
*
* Description: Demonstrates basic features of the ContourPlot object.
* The first frame emulates the contour plot drawn
* in cn01c using low-level NCARG calls.
*
*/
#include <stdio.h>
#include <ncarg/gks.h>
#include <ncarg/ncargC.h>
#include <ncarg/hlu/hlu.h>
/*
* Include a header file for each object created
*/
#include <ncarg/hlu/App.h>
#include <ncarg/hlu/NcgmWorkstation.h>
#include <ncarg/hlu/PSWorkstation.h>
#include <ncarg/hlu/XWorkstation.h>
#include <ncarg/hlu/ScalarField.h>
#include <ncarg/hlu/ContourPlot.h>
#include <ncarg/hlu/LogLinPlot.h>
/*
* This header file contains the data used by this example
*/
#include "cn03c.h"
/*
* The coordinates of the irregular Y dimension
*/
float level[] = { 1000, 850, 700, 500, 400, 300, 250, 200, 150, 100} ;
/*
* Explicit labels and label locations for the X Axis tickmarks
*/
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" };
float labellocs[] = { -90.0, -60.0, -30.0, 0.0, 30.0, 60.0, 90.0 };
/*
* The data dimensions
*/
int M=73, N=10;
main()
{
int appid,wid,cnid,dataid,llid;
int rlist, grlist;
int len_dims[2];
float xvp,yvp,heightvp,widthvp;
int NCGM=0, X11=1, PS=0;
/*
* Initialize the high level utility library
*/
NhlInitialize();
/*
* Create an application context. Set the app dir to the current directory
* so the application looks for the resource file the directory it executes
* from.
*/
rlist = NhlRLCreate(NhlSETRL);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"cn03",NhlappClass,NhlDEFAULT_APP,rlist);
if (NCGM) {
/*
* Create a meta file workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./cn03c.ncgm");
NhlCreate(&wid,"cn03Work",
NhlncgmWorkstationClass,NhlDEFAULT_APP,rlist);
}
else if (X11) {
/*
* Create an X workstation.
*/
NhlRLClear(rlist);
NhlRLSetInteger(rlist,NhlNwkPause,True);
NhlCreate(&wid,"cn03Work",
NhlxWorkstationClass,NhlDEFAULT_APP,rlist);
}
else if (PS) {
/*
* Create a meta file workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPSFileName,"./cn03c.ps");
NhlCreate(&wid,"cn03Work",
NhlpsWorkstationClass,NhlDEFAULT_APP,rlist);
}
/*
* Create a scalar field data object with a linear X dimension representing
* latitude and an irregular Y dimension representing geopotential height.
* Define the start and end points of the data, based on the dataset.
*/
NhlRLClear(rlist);
len_dims[0] = N, len_dims[1] = M;
NhlRLSetMDFloatArray(rlist,NhlNsfDataArray,T,2,len_dims);
NhlRLSetFloatArray(rlist,NhlNsfYArray,level,NhlNumber(level));
NhlRLSetFloat(rlist,NhlNsfXCStartV,-90.0);
NhlRLSetFloat(rlist,NhlNsfXCEndV,90.0);
NhlRLSetFloat(rlist,NhlNsfYCStartV,1000.0);
NhlRLSetFloat(rlist,NhlNsfYCEndV,100.0);
NhlCreate(&dataid,"mydata",NhlscalarFieldClass,NhlDEFAULT_APP,
rlist);
/*
* Create a ContourPlot object. Since ContourPlot contains a TickMark object by
* default, the non-default TickMark resources can be set in the ContourPlot
* object.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"Profile @ 105:S:o:N:W - Frame 1");
NhlRLSetInteger(rlist,NhlNcnScalarFieldData,dataid);
NhlRLSetFloat(rlist,NhlNvpXF,0.125);
NhlRLSetFloat(rlist,NhlNvpYF,0.85);
NhlRLSetFloat(rlist,NhlNvpWidthF,0.6);
NhlRLSetFloat(rlist,NhlNvpHeightF,0.6);
NhlRLSetFloat(rlist,NhlNcnLevelSpacingF,5.0);
NhlRLSetInteger(rlist,NhlNtmXBMode,NhlEXPLICIT);
NhlRLSetInteger(rlist,NhlNtmXBMinorOn,False);
NhlRLSetFloatArray(rlist,
NhlNtmXBValues,labellocs,NhlNumber(labellocs));
NhlRLSetStringArray(rlist,
NhlNtmXBLabels,labels,NhlNumber(labels));
NhlCreate(&cnid,"ContourPlot1",NhlcontourPlotClass,wid,rlist);
NhlDraw(cnid);
NhlFrame(wid);
/*
* Color and add dash patterns to the lines, then display a legend
* listing the line types. The position of the Legend is controlled by
* resources set in the resource file. Thicken lines.
* Note that the Legend and LabelBar are provided to the ContourPlot object
* by its PlotManager (created by default when the ContourPlot object
* is initialized). Therefore the resources to control them have the
* prefix 'pm' rather than 'cn'.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"Profile @ 105:S:o:N:W - Frame 2");
NhlRLSetInteger(rlist,NhlNcnMonoLineColor,False);
NhlRLSetInteger(rlist,NhlNcnMonoLineDashPattern,False);
NhlRLSetString(rlist,NhlNpmLegendDisplayMode,"always");
NhlSetValues(cnid,rlist);
NhlDraw(cnid);
NhlFrame(wid);
/*
* Turn lines off, and use solid color fill instead.
* Remove the Legend and display a LabelBar.
* Turn off line and high/low labels.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"Profile @ 105:S:o:N:W - Frame 3");
NhlRLSetString(rlist,NhlNcnLinesOn,"false");
NhlRLSetString(rlist,NhlNcnFillOn,"true");
NhlRLSetString(rlist,NhlNpmLegendDisplayMode,"never");
NhlRLSetString(rlist,NhlNpmLabelBarDisplayMode,"always");
NhlRLSetString(rlist,NhlNcnLineLabelsOn,"false");
NhlRLSetString(rlist,NhlNcnHighLabelsOn,"false");
NhlRLSetString(rlist,NhlNcnLowLabelsOn,"false");
NhlSetValues(cnid,rlist);
NhlDraw(cnid);
NhlFrame(wid);
/*
* Now show the plot with the Y-Axis linearized, by overlaying the
* plot on a LogLinPlot object. Retrieve the current view coordinates
* of the ContourPlot object and pass them on to the LogLinPlot object.
* Note the LogLinPlot needs to be told the data boundaries.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"Profile @ 105:S:o:N:W - Frame 4");
NhlSetValues(cnid,rlist);
grlist = NhlRLCreate(NhlGETRL);
NhlRLClear(grlist);
NhlRLGetFloat(grlist,NhlNvpXF,&xvp);
NhlRLGetFloat(grlist,NhlNvpYF,&yvp);
NhlRLGetFloat(grlist,NhlNvpWidthF,&widthvp);
NhlRLGetFloat(grlist,NhlNvpHeightF,&heightvp);
NhlGetValues(cnid,grlist);
NhlRLClear(rlist);
NhlRLSetFloat(rlist,NhlNvpXF,xvp);
NhlRLSetFloat(rlist,NhlNvpYF,yvp);
NhlRLSetFloat(rlist,NhlNvpWidthF,widthvp);
NhlRLSetFloat(rlist,NhlNvpHeightF,heightvp);
NhlRLSetFloat(rlist,NhlNtrXMinF,-90.0);
NhlRLSetFloat(rlist,NhlNtrXMaxF,90.0);
NhlRLSetFloat(rlist,NhlNtrYMaxF,1000.0);
NhlRLSetFloat(rlist,NhlNtrYMinF,100.0);
NhlRLSetString(rlist,NhlNtrYReverse,"True");
NhlCreate(&llid,"LogLin1",NhllogLinPlotClass,wid,rlist);
/*
* The LogLinPlot becomes the Base Plot, since it controls the coordinate
* system that we are mapping to. Overlay the ContourPlot object on the base,
* then plot the LogLinPlot object. Note that you cannot draw the ContourPlot
* object directly, once it becomes an overlay Plot.
*/
NhlAddOverlay(llid,cnid,-1);
NhlDraw(llid);
NhlFrame(wid);
NhlDestroy(llid);
NhlDestroy(dataid);
NhlDestroy(cnid);
NhlDestroy(wid);
NhlDestroy(appid);
NhlClose();
exit(0);
}