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Change color of section graph

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I need to change the color of each quadrant of the graph, in the code I know I have a map color, but I was wondering if it is possible to manually change each color.
group = (x <= 0) * 2 + (y <= 0) ;
pointsize = 30;
scatter(x, y, pointsize, group);

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madhan ravi
madhan ravi 15 Feb 2019
Editing question after someone has answered is highly discouraged in this forum.

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Walter Roberson
Walter Roberson 11 Feb 2019
Instead of colormap(jet(4)) create the colormap you want as a 4 x 3 array and colormap() it.
cmap = [1 0 0;
0 1 0;
0 0 1;
0 0 0];
Note: your group variable will be 0, 1, 2, or 3 and so will not map directly to a colormap entry. The code I had suggested to you added 1 to group, getting 1, 2, 3, or 4.

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Dionisio Mendoza
Dionisio Mendoza 11 Feb 2019
Thank's a lot.

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