Shading with plot3

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Niklas
Niklas 2016-5-26
回答： Walter Roberson 2016-5-26
If you have plotted several dots with plot3(x,y,z) is it possible to add some shading because, shading interp, does not work. Something like how far away the dots are from origo?

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回答（1 个）

Walter Roberson
Walter Roberson 2016-5-26
Instead of using plot3() you can use
r = sqrt(x.^2 + y.^2 + z.^2);
g = patch('Vertices', [x(:), y(:),z(:); nan nan nan], 'Faces', (1:length(x)+1).', 'FaceVertexCData', [r(:); nan], 'EdgeColor', 'interp', 'Marker','*')
This will shade both the lines and the markers.
There is a "trick" here, which is to put in the nan as a face. If you do not put in the nan (or inf instead) then patch() will close the polygon.

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