matlab function to return array until 0

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mare413
mare413 2017-9-18
回答： Image Analyst 2017-9-18
i'm trying to create a function that receives an array and returns the array until a 0, for instance [12, -4, 5, 32, 0, 4, 1, -8] return [12, -4, 5, 32], and if the array contains no 0, return the whole array.
here's what i have so far:
function V = Notzero(V)
V(V==0)=[]
end
I an extremely new to Matlab though i know a bit of js, i believe what i wrote returns the array without the 0s, but im not sure. Any help appreciated

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Image Analyst
Image Analyst 2017-9-18
Try this:
function V = Notzero(V)
zeroIndex = find(V == 0);
if ~isempty(zeroIndex)
V = V(1:zeroIndex-1)
end
end
If it finds a zero, it redefines V. If it doesn't find a zero, zeroIndex is empty and it doesn't go into the "if" block and so V is returned completely unchanged.

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