ps_to_png, a BASH code which uses ghostscript() to convert a graphics file from PostScript to PNG format.
At one time, the ImageMagick program convert() would do this job. However, because of a security problem within the PostScript language, convert() will now refuse to handle PostScript files!
A program like FreeFem++ will output graphics in PostScript format, and it is useful to have a code that will automatically convert this to PNG format, as part of a job script.
One flaw I have noticed is that lines drawn by FreeFem++ are rendered very thin in the final PNG output. I have been unable to find an appropriate remedy in the scanty GhostScript documentation.
A better solution than this script is to use the GhostScript function ps2png, if you can find and install it!
