Michael Roettger wrote: > Hi all, > > maybe I've misunderstood something concerning masking or quiver plots: > I want to exclude some data from a quiver plot. Here's an example: > > --------------------8<---- > import numpy as N > import pylab as pl > import matplotlib.numerix.ma as ma > > # prepare data > X,Y = pl.meshgrid(range(5),range(5)) > angles = pl.rand(5,5) > U = N.cos(angles) > V = N.sin(angles) > > # prepare mask > M = N.zeros((5,5), dtype='bool') > M[2,2] = True > > # apply mask > Um = ma.masked_array(U,mask=M) > Vm = ma.masked_array(V,mask=M) > > # plot > pl.quiver(X,Y,Um,Vm) > # pl.plot(range(5),Um[2],'x') > > pl.show() > ---------------------->8---- > > Using the commented 'plot' command works as expected, but 'quiver' results in > empty axes. If I take U,V instead of Um,Vm, the arrows are drawn .. > What am I doing wrong or is there another way to exclude arrows from being > plotted? > > Thank you in advance, > > Michael >
Michael: With 0.98.3, all the arrows are drawn - I don't see empty axes. However, the masked elements are not excluded, so I do think it's a bug. -Jeff -- Jeffrey S. Whitaker Phone : (303)497-6313 NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449 325 Broadway Boulder, CO, USA 80305-3328 ------------------------------------------------------------------------- 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-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
