Drawing graph with bargraph.pl script

I am trying to draw a bar graph with the script from this site http://www.burningcutlery.com/derek/bargraph/ but I am getting the following error on my screen. Any ideas

perl bargraph.pl -gnuplot -fig -png scenario1.perf 
sh: fig2dev: not found
convert: no decode delegate for this image format `/tmp/magick-XXpiZBkY' @ e开发者_运维技巧rror/constitute.c/ReadImage/532.
convert: missing an image filename `-' @ error/convert.c/ConvertImageCommand/2970.

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You don't have fig2dev. It looks like you need to install a transfig package as described in the "Caveats and Future Work" section on the bargraph page you linked. How you do that depends on what OS you're running.