custom_projection_example.py is completely out of date

[anntzer]

Basically the whole example (http://matplotlib.org/examples/api/custom_projection_example.html) seems to be an outdated implementation of the Hammer projection (available at https://github.com/matplotlib/matplotlib/blob/master/lib/matplotlib/projections/geo.py). In fact it is so outdated that it doesn't manage to make the lines become "curved" like they should. Instead, just copy-pasting the if __name__ == "__main__" block at the end to use the standard hammer projection results in a correct plot:

import matplotlib.pyplot as plt

plt.subplot(111, projection="hammer")
p = plt.plot([-1, 1, 1], [-1, -1, 1], "o-")
plt.grid(True)

plt.show()

[tacaswell]

This is broken back as far as we have hosted built docs: http://matplotlib.org/1.2.1/examples/api/custom_projection_example.html

👍 on reducing the example to the code in the OP of this issue.

[tacaswell]

Looks like this is mostly @mdboom 's work from 2008.

[NelleV]

If I am not mistaken, this is fixed in master. @anntzer care to check?

[QuLogic]

Fixed by #7111.

[anntzer]

I'm not convinced that it was worth copying the entire implementation of the Hammer projection into the example but I guess it's fine too.