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Emily
1

Array of +1s and -1s: Want Pink and Blue for imagesc

Asked by Emily
on 18 Apr 2019
Latest activity Commented on by Emily
on 18 Apr 2019
I have a 2-dim array of just +1's and -1s. I am using imagesc(myarray) and I want it to appear with the +1's showing up as a bring pink and the -1's showing up as blue. Does anyone have any suggestions? Thank you!!!

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R2018b

1 Answer

Answer by Rylan Dmello on 18 Apr 2019
 Accepted Answer

Hi Emily, the colormap function might work for you:
% Generate some sample data.
data = 2 * randi([0 1], 10, 10) - 1;
% Define the color map. Normalize 0-255 RGB values to 0-1 intensities.
map = [255, 20, 147;
0,191, 255] / 255;
% Plot data and set the new colormap on the current figure.
imagesc(data)
colormap(map)
This generates the following image:
cmap.png

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Thank you!

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