Can I make the matrix of size n with only x elements known and rest all 0?

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Jay Vaidya
Jay Vaidya 2020-11-14
回答： Setsuna Yuuki. 2020-11-14
I have a matrix that can have some x known values. But I want to make it of fixed length n. In other words, I want to append 0s and make one n sized matrix from x known elements and n-x 0s.
I think that this can be surely done by just one for loop, but it would be great if there is a way to do this with a one-line command.

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-11-14
No for loop is needed. You can use padarray(), but easier is
n = 20;
x = 1:12;
y = [x zeros(1, n-numel(x))]

更多回答（1 个）

Setsuna Yuuki.
Setsuna Yuuki. 2020-11-14
x = [1 2 3 4]
large = 8
x = [x zeros(1,large-length(x))]

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