changing values in matrix to numbers from particular range

Question

Pawel Szczepanowski 2021-12-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1615425-changing-values-in-matrix-to-numbers-from-particular-range

评论： Pawel Szczepanowski 2021-12-21

hi, I have matrix X =[1,5,10,14,25;22,30,28,4,2]. I would like to change values of this matrix i this way:

if value is from range: 1:5 change it to 1, 6:10 change it to 2, 11:15 change it to 3, 16:20 change it to 4, 21:25 change it to 5, 26:30 change it to 6.

In result i would like to get matrix [1,1,2,3,5; 5,6,6,1,1].

I try something like this: X(X(1:5)==1, etc... but this does not work well.

Do you have aby ideas?

Thanku you in advance.

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Answer 1

Voss 2021-12-21

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1615425-changing-values-in-matrix-to-numbers-from-particular-range#answer_859685

在 MATLAB Online 中打开

X = [1,5,10,14,25;22,30,28,4,2];
display(X);
X = 2×5
     1     5    10    14    25
    22    30    28     4     2
X(X >= 1 & X <= 5) = 1;
X(X >= 6 & X <= 10) = 2;
% and so on for the rest of the ranges
display(X);
X = 2×5
     1     1     2    14    25
    22    30    28     1     1