Is it possible to do scatter plot for two raster datasets?

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I would like to do scatterplot for two raster datasets. As I found in matlab help, scatterplot works for vector data. Is it possible to do something similar also for rasters?
Karolina on 10 Jul 2015
I am not sure is my question was correct, but I have a raster dataset with X,Y,T values, where T represent some phenomena. For the small part of my data I manually delineated the areas where T is very high, then I exported these data to separate raster. And the rest of data I exported to second raster. Now I would like to compare these raster's to find the value (in T) which will be the threshold for automatic division of the whole dataset. What kind of graph should I use to do this? Simple histogram?

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Accepted Answer

Walter Roberson
Walter Roberson on 11 Jul 2015
Perhaps you just need graythresh() ?
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Karolina on 13 Jul 2015
Edited: Karolina on 13 Jul 2015
Thank you for graythresh suggestion. The method gives me exactly what I want.

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