Financial Charts / Graphs in Ruby or Python

Question

What are my best options for creating a financial open-high-low-close (OHLC) chart in a high level language like Ruby or Python? While there seem to be a lot of options for

Answer 1

You can use Pylab (matplotlib.finance) with Python. Here are some examples: http://matplotlib.sourceforge.net/examples/pylab_examples/plotfile_demo.html . There is some good material specifically on this problem in Beginning Python Visualization.

Update: I think you can use matplotlib.finance.candlestick for the Japanese candlestick effect.