logical on structure data
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I need to perform a logical operation on array data in a structure, I'm close but cant quite find the neat & efficient solution.
The structure is:
s = struct('binarydata',zeros(vidHeight,vidWidth), 'otherStuff', other);
%then populate s in a loop
...
I then want to perform logical operation on the data in parts of s, eg elementwise and across a range of arrays in s, like this:
result = and ( s(1).binarydata, s(2).binarydata,s(3).binarydata, ...);
but I'd like to be able to do dynamically in a loop, eg:
result = and ( s(i:i+60).binarydata);
which doesn't work as s(i:i+60).binarydata only returns the 60th element. or
result = and ( [s(i:i+60).binarydata]);
which doesn't work either because it concatenates the arrays.
I'm close but can't quite get the syntax right.
采纳的回答
Walter Roberson
2016-3-14
dimno = 1 + ndims( s(1).binarydata );
result = all( cat(dimno, s(i:i+60).binarydata ), dimno);
3 个评论
Ben Modra
2016-3-14
Walter Roberson
2016-3-14
For "or":
result = any( cat(dimno, s(i:i+60).binarydata ), dimno);
for "max":
result = max( cat(dimno, s(i:i+60).binarydata ), dimno);
for "sum":
result = sum( cat(dimno, s(i:i+60).binarydata ), dimno);
Ben Modra
2016-3-14
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