plotparallels()/plotmeridians() only support xoffset or yoffset not both and do not support horizontalalignment or verticalalignment

plotparallels() and plotmeridians() only support xoffset or yoffset not both.

plotparallels() and plotmeridians() do not support horizontalalignment or verticalalignment via kwargs as these are hard coded within Basemap.

I found both of these because I wanted the labels inside the map border with the parallels above the line at the right of the plot and the meridians to the right of the line at the bottom of the plot. I found a hack by altering the returned matplotlib objects:

meridians = bmap.drawmeridians(meridians,labels=[0,0,1,0],fontsize=10,
                               color='gray', yoffset=-abs(right-left)
for k, v in meridians.iteritems():
    v[1][0].set_horizontalalignment('left')

This sets the label to the top but then moving them the size of the plot then setting horizontal alignment via returned matplotlib object.

Locate the implementations of plotparallels() and plotmeridians() and trace how xoffset, yoffset, and kwargs are handled. Verify the behavior with labels on both sides of the map: both offsets should work together, and horizontalalignment and verticalalignment should be accepted. Done means callers no longer need to modify the returned matplotlib objects for this positioning.