Ryan May wrote: > Hi, > > In looking over trying to support masked arrays in wind barbs, I noticed > a problem. I had originally copied the model of quiver, wherein masked > arrays are supported for U,V, and color, but not for X,Y. This stems > from the seemingly nonsensical nature of masking a location. However, > if nothing is drawn for a location X,Y where U,V are masked, this would > seemingly lead to a problem where the locations and the things to be > drawn get out of phase. Am I missing something here? Eric, did I miss > some magic somewhere in quiver that handles this? > > Ryan >
Ryan, There is no magic; we are not compressing or otherwise extracting the valid values, but are leaving the masking of U and V in place through the creation of the arrow vertices. It is the PolyCollection.draw() method that is then handling the masking. Now, having said that, and having traced through the code, I am not at all sure that everything in collections is still working correctly as described; I will have to look a bit more. Note that the path module itself can handle masking now, so masked arrays sometimes get passed all the way through to it. Quiver and windbarb could use the axes.delete_masked_points function right at the start, and this might be a good change to make, except that it is inconsistent with using the present set_UVC method to update arrows at constant locations. Eric ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
