How can I select a random element in a row of matrix?

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I want to select a a random element in a row and then I want to know the column of this element
Could you Help me?

Risposta accettata

Image Analyst
Image Analyst il 27 Mag 2014
Try this:
yourMatrix = magic(9) % Sample data
randomColumnNumber = randi(size(yourMatrix, 2), 1)
row = 3; % Whatever
% Get the value of the matrix at this location.
randomValueInRow = yourMatrix(row, randomColumnNumber)

Più risposte (1)

rifat il 27 Mag 2014
Assuming the data is in 'row'
col=1+floor(rand()*length(row)) % column number of the randomly selected element
element=row(col) % randomly selected element
  2 Commenti
Walter Roberson
Walter Roberson il 29 Nov 2015
Ji-hwan Hwang, I do not understand what you mean by "I want to appear in one of two drainage Heat 6-8" ?
If you want to select randomly from column 6 to 8, then
col = randi([6 8]);
element = row(col);

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