You can also use PGFPlots, a plotting tool built into LaTeX (using PGF/Tikz).

http://pgfplots.sourceforge.net/

It delivers nice vector graphics plots, and since it's in your .tex file, it automatically picks up any and all styling changes you have made in the preamble. You can have it re-render plots on each LaTeX compilation, or just conditionally re-render plots if the data has changed.

(As always, latexmk [ http://mg.readthedocs.io/latexmk.html ] comes highly recommended for automating the compilation of LaTeX documents.)