How to change a range of numbers in a matrix to a random number of a matrix?

Question

Sumanth 2023-2-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1917895-how-to-change-a-range-of-numbers-in-a-matrix-to-a-random-number-of-a-matrix

评论： Voss 2023-2-27

采纳的回答： Voss

G = (1:125);

G = reshape(1:125,[25,5]);

x = setdiff(0:24, 2:25);

G is my matrix now i want to change element values ranging from 2 to 25 to random number from x

How can i do it??

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Answer 1

Voss 2023-2-23

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1917895-how-to-change-a-range-of-numbers-in-a-matrix-to-a-random-number-of-a-matrix#answer_1178730

在 MATLAB Online 中打开

G = reshape(1:125,[25,5])
G = 25×5
  26    51    76   101
  27    52    77   102
  28    53    78   103
  29    54    79   104
  30    55    80   105
  31    56    81   106
  32    57    82   107
  33    58    83   108
  34    59    84   109
  35    60    85   110
x = setdiff(0:24, 2:25)
x = 1×2
   1
idx = G >= 2 & G <= 25;
G(idx) = x(randi(numel(x),[nnz(idx),1]))
G = 25×5
  26    51    76   101
  27    52    77   102
  28    53    78   103
  29    54    79   104
  30    55    80   105
  31    56    81   106
  32    57    82   107
  33    58    83   108
  34    59    84   109
  35    60    85   110