Masks

All,

In the code on:

http://matplotlib.sourceforge.net/examples/api/bbox_intersect.html

I think I've figured out that:

    vertices = (np.random.random((4, 2))-0.5)*6.0
    vertices = np.ma.masked_array(vertices, [[False, False], [True, True], [False, False], [False, False]])

prevents the second of four random vertices from being used. But I'm not sure why

    plot(vertices[:, 0], vertices[:, 1], color=color)

seems to connect only two points for a line segment.

Can someone explain?

D.

David Arnold wrote:

All,

In the code on:

http://matplotlib.sourceforge.net/examples/api/bbox_intersect.html

I think I've figured out that:

    vertices = (np.random.random((4, 2))-0.5)*6.0
    vertices = np.ma.masked_array(vertices, [[False, False], [True, True], [False, False], [False, False]])

prevents the second of four random vertices from being used. But I'm not sure why

    plot(vertices[:, 0], vertices[:, 1], color=color)

seems to connect only two points for a line segment.

A missing point is a gap in the line, by design. If you use markers, 3 points will be plotted, but there are only two adjacent points, so only one line segment.

Eric

···

Can someone explain?

D.
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