plotter.c

/* plotter.c module */
/* contains routines to plot a data file produced by another program  */
/* 2d data plotted in this version                                    */
/**********************************************************************/

#include "externals.h"

static FILE *plot1,
       *plot2,
       *ashell;

static char *startplot1 = "plot [] [0:1.1]'plot11.dat' with lines, 'plot12.dat'
                           with lines\n";

static char *startplot2 = "plot 'plot21.dat' with lines, 'plot22.dat' with lines\n";
static char *replot = "replot\n";
static char *command1= "/usr/local/bin/gnuplot> dump1";
static char *command2= "/usr/local/bin/gnuplot> dump2";
static char *deletefiles = "rm plot11.dat plot12.dat plot21.dat plot22.dat";
static char *set_term = "set terminal x11\n";

void
StartPlot(void)
 { plot1 = popen(command1, "w");
   fprintf(plot1, "%s", set_term);
   fflush(plot1);
   if (plot1 == NULL)
      exit(2);
   plot2 = popen(command2, "w");
   fprintf(plot2, "%s", set_term);
   fflush(plot2);
   if (plot2 == NULL)
      exit(2);
 }

void 
RemoveDat(void)
 { ashell = popen(deletefiles, "w");
   exit(0);
 }

void
StopPlot(void)
 { pclose(plot1);
   pclose(plot2);
 }

void
PlotOne(void)
 { fprintf(plot1, "%s", startplot1);
   fflush(plot1);

   fprintf(plot2, "%s", startplot2);
   fflush(plot2);
 }

void
RePlot(void)
 { fprintf(plot1, "%s", replot);
   fflush(plot1);
 }