How can I split a matrix into 4 regions?

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Mariana 2020-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/501919-how-can-i-split-a-matrix-into-4-regions

回答： Anmol Dhiman 2020-1-31

在 MATLAB Online 中打开

data = [0, 5:120; [(10:200)', zeros(191, 116)]]

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Sindar 2020-1-29

What do you mean by "split"? Do you want new variables? Do you want an equally-sized matrix that tells you which region each element is in? Is there logic to the split?

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Answer 1

Anmol Dhiman 2020-1-31

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https://ww2.mathworks.cn/matlabcentral/answers/501919-how-can-i-split-a-matrix-into-4-regions#answer_413004

Hi Mariana,

You have not mentioned about the criteria of splitting. So, I am assuming that is based on the values of the elements. I am also assuming that you want to store the values of one region together. Hence, you can use an array to store them.

There is no direct approach for splitting the matrix randomly. You can see the below link to extract elements from matrix based on condition and use this. Apply four times( as there are four regions) based on each condition.

https://www.mathworks.com/help/matlab/matlab_prog/find-array-elements-that-meet-a-condition.html

Hope it helps