Grayscale Image with z-dimension as Grayscale value

I have data comprising pixel location (x,y) and corresponding height (z) at particular pixel location. I want to plot 2D grayscale Image with my z dimension as grayscale value across varying xy positions.

Answer 1

[Walter Roberson]

surf(z, 'edgecolor', 'none')
colormap(gray(256))

[Vinit Nagda]

I want to get 2D image.

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/scatteredinterpolant-object.html