change to "set terminal png"
# create the gnuplot command file
open( CMD, ">$tmpcmd" );
# create the gnuplot command file
open( CMD, ">$tmpcmd" );
- print CMD "set terminal png color\n";
+ print CMD "set terminal png\n";
print "png_image = $png_image\n";
print CMD "set output \"$png_image\"\n";
print CMD "set xlabel \"Time (sec)\"\n";
print "png_image = $png_image\n";
print CMD "set output \"$png_image\"\n";
print CMD "set xlabel \"Time (sec)\"\n";