meshgrid values to function without loop
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Hello, i want to give x,y coordinates to a self-written function. The current state is, that i use 2 loops. I think that this is a very ugly and computation consuming solution. Can someone help me to improve this?
x = linspace(0,1,11) ;
y = linspace(0,1,11) ;
[X,Y] = meshgrid(x,y) ;
for kk = 1:11
for nn = 1:11
Coordinate = [X(kk,nn) Y(kk,nn)];
Z(kk,nn) = f_SomeFunction(Coordinate,someConstant,...);
end
end
4 个评论
madhan ravi
2019-1-30
编辑：madhan ravi
2019-1-30
Coordinate = [X Y] % doesn't this do what you want? without loop?
Nimananda Sharma
2019-1-30
Hi,
It appears that your function accepts only scalar input
One possible solution would to change your function to use maxtrix?
Christopher Brokmann
2019-1-30
采纳的回答
Rik
2019-1-30
If you are not prepared to change the function to accept non-scalar inputs, you can use this code to implicitly use for-loops. This can be faster in some circumstances, and it may look cleaner (even if that is subjective).
Coordinate = [X Y];
someConstant_array=repmat(someConstant,size(Coordinate));
Z = arrayfun(@f_SomeFunction,Coordinate,someConstant_array);
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