set colormap to change linearly between different points on point cloud?
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i have a 3d point cloud on which i have to plot different points and want the color denisty to change linearly according to the points location. I have tried different commands but i have not been successful up til now. I have attached a picture in which you can see that i have made circles on the forehead, but i want to plot like 17 similar points on the face and i want the red color to change from light to dark according to points on the skin. Need some expert advise from seniors. I have attached the ply file of point cloud below:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/156014/image.jpeg)
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