How to run matplotlib on heroku
Easy way
pip install matplotlib==1.1.1
pip freeze > requirements.txt
git commit requirements.txt -m "matplotlib"
Commentary
- matplotlib-1.4.1 has strange pytz.tzinfo (for some reason it is reported as a pandas error, so it may be usable if it does not coexist with pandas?)
- matplotlib-1.4.0 recognizes FreeType 2.5.0 as 2.3.0 for some reason and fails as it does not meet the Requirements
- Same for matplotlib-1.3.1
- OK if you go back to matplotlib-1.1.1