Heatmap for 2d coordinates

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Herbert 2013-7-19

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Hello, I have a Matrix of dimensions (2xN) which consists of 2 dimensional Cartesian coordinates and I would like to create a heat map of this. Do you know any way to do this?

Thanks in advance!

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Chad Gilbert 2013-7-19

What do you want a heat-map of? A third variable? The densiy of the scatter points?

Herbert 2013-7-19

With heat map I mean a plot where e.g. red color indicates that a lot of points from the matrix are in a certain neighbourhood and blue would mean that all the other coordinates are far away.

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the cyclist 2013-7-19

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Without more detail, I would just point you to the image() command. Is that helpful?

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Herbert 2013-7-19

编辑：Herbert 2013-7-19

That for your suggestion. I added a comment what I mean with "heat map" I hope its now a bit clearer, sorry for that. Unfortunately the image command does not provide this.

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