I’m excited to report that my first contribution back to the PyMC codebase was accepted. :)
It is a slight reworking of the pymc.Matplot.plot function that make it include autocorrelation plots of the trace, as well as histograms and timeseries. I also made the histogram look nicer (in my humble opinion).
The process of making changes to the pymc sourcecode is something that has intimidated me for a while. Here are the steps in my workflow, in case it helps you get started doing this, too.
# first fork a copy of pymc from https://github.com/pymc-devs/pymc.git on github git clone https://github.com/pymc-devs/pymc.git # then use virtualenv to install it and make sure the tests work virtualenv env_pymc_dev source env_pymc_dev/bin/activate # then you can install pymc without being root cd pymc python setup.py install # so you can make changes to it without breaking everything else # to test that it is working cd .. python >>> import pymc >>> pymc.test() # then make changes to pymc... # to test changes, and make sure that all of the tests that use to pass still do repeat the process above cd pymc python setup.py install cd .. python >>> import pymc >>> pymc.test() # once everything is perfect, push it to a public git repo and send a "pull request" to the pymc developers.
Is there an easier way? Let me know in the comments.