title: Good plotting library for C?
body: <p>My question is very similar in spirit to this question: <a href="https://stackoverflow.com/questions/1120542/what-is-the-best-plotting-library-for-python">What is the best plotting library for Python?</a></p>
  
  <p><strong>What is my best bet for plotting data in C?</strong>  Am I better off forgoing a library and just generating data that I can feed directly into <a href="http://en.wikipedia.org/wiki/Gnuplot" rel="noreferrer">gnuplot</a>?</p>
  
  <p>My impetus for this question is being able to visualize DSP transformations while studying the excellent resources found in an <a href="https://stackoverflow.com/questions/1253116/learning-digital-signal-processing">earlier question of mine</a>.  So the focus is really just 2D plots, histograms, etc.; 3D isn't as important right now.</p>