Creating matrix outside for loop
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I need to create a matrix of variables and have the current code below. Is there anyway to do this without a for loop?
x = 0:.1:1;
y = 0:.1:1;
for i = 1:length(x)
for j = 1:length(y)
x2(i,j) = x(i);
y2(i,j) = y(j);
end
end
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Star Strider
le 19 Fév 2017
Modifié(e) : Star Strider
le 19 Fév 2017
Try this:
x2 = y'*ones(size(x));
y2 = ones(size(y'))*x;
EDIT —
The R2016b multiplication automatically does the expansion. Previous versions would require bsxfun calls:
x2 = bsxfun(@times, y', ones(size(x)));
y2 = bsxfun(@times, ones(size(y')), x);
5 commentaires
Star Strider
le 20 Fév 2017
You do not need the loop.
This works:
U = sin(y1);
(I apologise for the delay.)
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