I dusted it off this semester to help with some complicated reports I needed to make. I needed to include lots of graphs from simulation runs with various para

I dusted it off this semester to help with some complicated reports I needed to make. I needed to include lots of graphs from simulation runs with various parameters. I encoded the parameter values in the graphs’ filenames, and used m4 to write the corresponding gnuplot control file. After tying everything together with make, I could include plots for any parameter as I was writing the report and have the relevant data generated as necessary. All without re-running simulations that had already produced results.