Basemap 1.0.5 issue

[ajheaps]

I'm trying to zoom in on a cylindrical projection of some data and think there's a Basemap 1.0.5 issue. The data I'm plotting is from a climate model and is of fairly coarse resolution. The plot at http://climate.ncas.ac.uk/ajh/basemap/python.png shows the problem with missing contours although there is data there after applying addcyclic and shiftgrid.

The data in longitude starts at 0 degrees and then has steps of 3.75 degrees to 356.25 degrees. When the plotting region starts or ends at a point that isn't a grid point location in longitude the plot shows this issue. If I change the contour region to -7.5 to 3.75 (both of which are grid points) then the contours are all drawn correctly.

The simple code and data is available at http://climate.ncas.ac.uk/ajh/basemap. is this a known issue?

Regards
Andy

[jswhit]

See #89 for a description of the problem and the proposed solution.