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Asked: 2026-06-07T00:08:37+00:00

I have a set of triangles in the standard format used in matlab, i.e

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I have a set of triangles in the standard format used in matlab, i.e a 3XN list of indinces, and two vectors of length N, called X and Y for the x and y coordinates.
I have a scalar value associated with each triangle, in a vector C. I want to draw filled triangles where the color of each tri is determined by the vector C. I know I can use patch, but that would mean I need to iterate over all tris and call patch for each one, right?

Is there a better way?

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1 Answer

  1. Editorial Team

    Actually if you check the documentation for patch you’ll notice it says

    Create one or more filled polygons.

    It also says

    If X and Y are m-by-n matrices, MATLAB draws n polygons with m vertices.
    C determines the color of the patch.

    patch may actually be exactly what you want. You just need to put the x and y coordinates into 3xN matrices.

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