Jeff Whitaker

You're right - this should be fixed.

I've reverted this merge, so the old addcyclic has been restored.

I modified the calculation of the cyclic longitude point as suggested by ajdawson, so it no longer assumes the grid is regular (pull request #144).

Sure, I'll have a look this weekend. Thanks.

Anyone want to submit a pull request for this?

For reasons not yet clear to me, you have to reverse the sign of the vectors that come back from transform_vector for SH polar plots, i.e. ups = -ups; vps...

Confirmed - but no idea yet how to fix this.

you can use lcrnrx,llcrnry,urcrnrx,urcrnry (corners in map projection coords) but not lat/lon.

That error usually means the file was not accessible for some reasons (either the server was down, or you don't have permissions to access it). What is the actual URL...

Perhaps the server is flaking out at just the moment you are requesting those lat/lon pairs? The error is coming from the C library and not the python interface, so...