How do you change an entire row or column of an array to a certain value

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Shawn Blancett
Shawn Blancett 2017-9-15
评论： Star Strider 2023-9-13
If I have an array of all zeros X = zeros(N) How do I change a column to a value I want.

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Star Strider
Star Strider 2017-9-15
One option:
N = 5;
X = zeros(N);
X(:,3) = rand(N, 1); % Change Column #3 To A Specific Vector
X(2,:) = 5*ones(1, N); % Change Row #2 To a Row Of ‘5’
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Star Strider
Star Strider 2023-9-13
@Riley Harris — Yes, however it can easily be vectorised. Using the sub2ind function is another option.
See the documentation section on Matrix Indexing for details.

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