How to check if a matrix falls in between other matrix values

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Conner Carriere
Conner Carriere 2021-2-6
编辑： Walter Roberson 2021-2-6
Lets say I have a matrix that is for the range of my values for red
Red = [212 0 0; 255 34 255];
I need to determine if another matrix falls between these two rows.
M = [232 12 0];
How would I do this
Better yet, is there a way that MATLAB would know that the M matrix is red? Could I define a way to find red, orange, white, yellow, blue, and green?
Thanks

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回答（1 个）

Walter Roberson
Walter Roberson 2021-2-6
编辑：Walter Roberson 2021-2-6
all(M >= Red(1,:) & M <= Red(2,:),3)
This would work for multiple rows of M matrix, producing one logical value per row of M.
There is no way that MATLAB would know that M is red except ways you (or someone) program. There is no built-in color identification method. Perception of color is individual, not universal, and there are no agreed boundaries for when something is or is not a particular color and not a different color.
Your Red would match [255 0 255] which few people would call red, being more likely to call magenta.

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