how to find rows and columns without using size
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Introductory MATLAB course, haven't covered loops and such yet. I'm curious how to find rows + columns of an array without using size fxn? Obv numel()/length() give you rows + columns, but they don't tell you which is which. What to do next?
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Guillaume
2019년 9월 15일
What is the actual text of the assignment, not your interpretation of it?
An assignment that asks you to find the size of a matrix without using the size function would be completely absurd. Sure you can find all sorts of roundabout ways of doing it, none of which would teach you anything useful and all of them requiring more advanced knowledge than the size function.
답변 (2개)
Bruno Luong
2019년 9월 14일
편집: Bruno Luong
2019년 9월 14일
for 2D array
p=numel(A);
if p==0
try
r = A(1,:);
n = 0;
m = numel(A*zeros(0,1));
catch
m = 0;
m = numel(zeros(1,0)*A);
end
else
m = numel(A(:,1));
n = p/m;
end
Bruno Luong
2019년 9월 15일
[numel(prod(A,2)) numel(prod(A,1))] % prod instead of sum for a change
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