>>[Christophe] Thanks, your example works but what I must do so to plot for >>example y=cos x >> ? I'm a very beginner. > > line, = ax.plot(x, np.cos(x)) > patch = patches.Circle((300,300), radius=100) > line.set_clip_path(patch) > >Everything in the matplotlib figure is an "Artist" (lines, images, >text, rectangles) and you can set the clippath of any artist. See > > http://matplotlib.sourceforge.net/users/artists.html > http://matplotlib.sourceforge.net/api/artist_api.html > >JDH
This is a very timely question for me. I'm needing to do something very similar, but I need to overlay a semi-transparent rectangle with a hole cut out of it. So, I'm making a rectangular patch, making a circular patch, setting the circular patch as the clip region for the rectangular patch, and then adding the clipped patch to the plot. However, I seem to be having trouble with the coordinate system, as there is no clipping on the rectangle. My test code looks like this: import numpy as np import matplotlib.pyplot as plt import matplotlib.path as path import matplotlib.patches as patches fig = plt.figure() ax = fig.add_subplot(111) x = np.arange(-50,50,0.1) line, = ax.plot(x, np.cos(x)*50) r=patches.Rectangle((-10,-10), 20, 20, fc=(0.5,0.5,0.5,0.9)) r.set_zorder(100) # shouldn't one of these work? # Plot coordinate system cutout = patches.Circle((0,0), radius=10) # Window coordinate system #~ cutout = patches.Circle((300,300), radius=50) r.set_clip_path(cutout) ax.add_patch(r) plt.show() ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
