How to create multidimensional array with specified row values

Question

okoth ochola 2023-5-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1976004-how-to-create-multidimensional-array-with-specified-row-values

编辑： Stephen23 2023-5-31

Hello, I am stack a little, i would want to an n by n matrix with specified row values, for exemple for a six by 7 matrix, i would like row number one be consisting of only 1s, row ttwo 2s, zand so forth. So that the matrix would look like matrix A inserted below (Note that tis is just an example I want to make a large matrix so that i can use it to manipulate another matrix, please help). Is there a way I can do this for a large matrix without keying in values manually.

A =

1 1 1 1 1 1 1

2 2 2 2 2 2 2

3 3 3 3 3 3 3

4 4 4 4 4 4 4

5 5 5 5 5 5 5

6 6 6 6 6 6 6

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Answer 1

Stephen23 2023-5-31

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1976004-how-to-create-multidimensional-array-with-specified-row-values#answer_1247454

编辑：Stephen23 2023-5-31

在 MATLAB Online 中打开

m = 6;
n = 7;
A = cumsum(ones(m,n),1)
A = 6×7
   1     1     1     1     1     1
   2     2     2     2     2     2
   3     3     3     3     3     3
   4     4     4     4     4     4
   5     5     5     5     5     5
   6     6     6     6     6     6
A = repmat(1:m,n,1).'
A = 6×7
   1     1     1     1     1     1
   2     2     2     2     2     2
   3     3     3     3     3     3
   4     4     4     4     4     4
   5     5     5     5     5     5
   6     6     6     6     6     6
A = (1:m).' * ones(1,n)
A = 6×7
   1     1     1     1     1     1
   2     2     2     2     2     2
   3     3     3     3     3     3
   4     4     4     4     4     4
   5     5     5     5     5     5
   6     6     6     6     6     6
A = min(1:n,(1:m).')
A = 6×7
   1     1     1     1     1     1
   2     2     2     2     2     2
   2     3     3     3     3     3
   2     3     4     4     4     4
   2     3     4     5     5     5
   2     3     4     5     6     6
A = repmat((1:m).',1,n)
A = 6×7
   1     1     1     1     1     1
   2     2     2     2     2     2
   3     3     3     3     3     3
   4     4     4     4     4     4
   5     5     5     5     5     5
   6     6     6     6     6     6
A = repelem((1:m).',1,n)
A = 6×7
   1     1     1     1     1     1
   2     2     2     2     2     2
   3     3     3     3     3     3
   4     4     4     4     4     4
   5     5     5     5     5     5
   6     6     6     6     6     6