Re: [matplotlib-devel] part of r5520 is bad for oceanography

[Jeff W. <js...@fa...>]

Eric Firing wrote:
> Jeff,
>
> http://matplotlib.svn.sourceforge.net/viewvc/matplotlib/trunk/toolkits/basemap/lib/mpl_toolkits/basemap/__init__.py?r1=5520&r2=5534
>
> Lines 2311 and 2312 in changeset 5520 have bitten me badly, and I think 
> they are ill-advised.  They are based on the assumption that input to 
> rotate_vector, which must be called before m_quiver, should be 
> describing a rectangular array of points; but this is not the case for a 
> typical oceanographic use-case, plotting current vectors as measured 
> along a ship track.  In that case one naturally has 4 1-D vectors of the 
> same shape for U, V, X, and Y, and one does not want meshgrid to be 
> called on X and Y.  If you want automatic meshgrid, it should be called 
> only if X and Y are 1-D *and* their lengths match the 2-D shape of U and V.
>
> Eric
>   

Eric:  Sorry about that.  For some reason, I was thinking that 
rotate_vector only made sense for gridded data, which is obviously 
wrong.  Fixed in r5960.

-Jeff

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