find matrix values and print to another matrix

Question

Esra Demirbilek 2022-3-29

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1683609-find-matrix-values-and-print-to-another-matrix

回答： Voss 2022-3-29

Hello everyone

I want to print machine times in the column next to the values in the result matrix. How can I do it? Each value in the result matrix represents jobs.

The duration of the jobs is given in the machine times matrix.

Result matris;

10

5

9

1

Machine Times

Work times

1 3

2 5

3 12

4 8

5 9

6 7

7 10

9 5

10 2

For example; ı want to do this

result;

10 2

5 9

9 5

1 3

thanks in advance

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Answer 1

Voss 2022-3-29

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1683609-find-matrix-values-and-print-to-another-matrix#answer_929914

在 MATLAB Online 中打开

You can use ismember() with its second output argument:

https://www.mathworks.com/help/matlab/ref/double.ismember.html#d123e786014

% Machine Times
% Work    times
lookup = [ ...
1             3
2             5
3             12
4              8                    
5              9
6              7
7              10
9              5
10            2];
M = [ ...
10
5
9
1];
[~,idx] = ismember(M,lookup(:,1)); % idx: row in the first column of lookup where each element of M occurs
result = [M lookup(idx,2)] % result is M followed by corresponding elements from column 2 of lookup
result = 4×2
    10     2
     5     9
     9     5
     1     3