I have a comma separated file named foo.csv containing the following data:
foo.csv
scale, serial, spawn, for, worker 5, 0.000178, 0.000288, 0.000292, 0.0003
There is a simple-r way of plotting it:
https://code.google.com/p/simple-r/
Using that script, you just have to type:
r -cdps, -k1:2 foo.csv
To get the plot you want. Put it in the verbose mode (-v) to see the corresponding R script.