drawing graphs in ubuntu

I have a C code that collects data and places them in a 2-D array. I would like to plot this data on an x-y 开发者_C百科graph (mathematics) automatically i.e. pass the data as parameters in a command line and get a graph

Are there any suggestions for how to do so?

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gnuplot is a good one to look at assume you mean x-y charts, if you want actual graphs then look at dot

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gnuplot will do what you need. If you want to process the data before, you might want to try octave, which aims to be a matlab equivalen (still uses gnuplot as a frontend for graphing).

If you want even more control, you could write a script in python and use matplotlib.