Create a Slanted Linspace Matrix

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Hugo Fortescue
Hugo Fortescue 2021-1-20
回答： Stephen23 2021-1-20
Hi All, I am trying to generate noise in an image, and need a matrix of the form:
1 2 3 4
2 3 4 5
3 4 5 6
4 5 6 7
up to 1024x1024. Is there an east way to create this?

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Stephen23
Stephen23 2021-1-20
Ran in:
hankel(1:4,4:7)
ans = 4×4
1 2 3 4 2 3 4 5 3 4 5 6 4 5 6 7

更多回答（1 个）

Daniel Pollard
Daniel Pollard 2021-1-20
If you have the signal processing toolbox, the buffer command will do exactly what you want.
If not, something like
x = linspace(xmin, xmax, numx);
matrix = zeros(numx, numx);
for ii = 1:numx
matrix(:, ii) = x + ii - 1;
end
should do the trick.

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