esh data. Supported array shapes are:

            - (M, N) or (M*N,): a mesh with scalar data. The values are mapped
              to colors using normalization and a colormap. See parameters
              *norm*, *cmap*, *vmin*, *vmax*.
            - (M, N, 3): an image with RGB values (0-1 float or 0-255 int).
            - (M, N, 4): an image with RGBA values (0-1 float or 0-255 int),
              i.e. including transparency.

            If the values are provided as a 2D grid, the shape must match the
            coordinates grid. If the values are 1D, they are reshaped to 2D.
            M, N follow from the coordinates grid, where the coordinates grid
            shape is (M, N) for 'gouraud' *shading* and (M+1, N+1) for 'flat'
            shading.
        r