How to display a single element from a matrix?

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Anthony Koning 2022-9-14

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https://ww2.mathworks.cn/matlabcentral/answers/1805515-how-to-display-a-single-element-from-a-matrix

回答： Jan 2022-9-15

Hi, I was wondering how I would be able to display a singular element from a given matrix. If I were to have a random integer matrix

x = randi (20,20)
x = 20×20
   6     2     1     3    12    17    11     4     4     5    15     2     9     4     1     6    18    18     8
  18    11    17    12    10     7    20    15     5    17    10    10     1     5     4    10     1    15     1
  13     7    19    20     6     1    20    20    13    11    15     1     8    10    13     1    17     7     3
   6     9    15    18     4    18     9     3     8    15     9    11    17     8     2     9    10    19     2
   7     8     6    10    17     5     9    18    16    11     7     8     8     1    18    14     8     5    17
  10    11    10    16     4    15    13    16    13     8    20    10     3     9    18     1    20    13     5
   6     8    18    15     7     2     1     8    20     4     4     6    10    19     1     7    20     6     2
   8     6     7     9    17    20    20    17     2     3    14    13    18    17     8    20     9     2    15
   1     3    18     1    20    14     9    20     6    13    13    16    10     6     7     4     2    11    15
   9     5    16     5     6     4     8     9    12    18     5    16    20    18    12     7    19    15    17

how would I go about selecting or highlighting the given value from a random row/column combination (say I want to know what vlaue is at [5, 7])? Thanks in advance for the advice.

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Stephen23 2022-9-14

编辑：Stephen23 2022-9-14

在 MATLAB Online 中打开

x = randi(20,20,20)
x = 20×20
  16     8     7    20    10     2     1    20     4     1    18     7    20    11    12    10     3     9    14
  11    20    10    13    15     6     3    16    11     6    11     5    20    11    17    18     7    17     1
   7     5    16    16    12    16    14     4    13     3    14    13    18     9     4     9     1     1    18
   6    18     5     9    17    10     4     3     1     5     4    12     7    20    20     9    14    20     2
  14     5    14     9    15    15    16    18    12     1    14     7     1     5     4     8     7    15     9
   2     5     5     1     7    10    10    17    19     4    14    19     1     8     9    15     1    16    13
   9    16    16     4    11     5    14     2     8    15    19     3     5    12     5     9    10     7     7
  15    13    13     3    10     2     5    16     1     3    14    20     1     4    13    16     6     1     5
  17    12    13    18    13    20    13    11    17    14    16     2    15     8    10     9    17    14     6
   3     1    18    17    11    19    13     7    17     3    15     5    10     2     2    18    18    16    15
x(5,7)
ans = 15