Identifying sequences of two or more and maintaining vector shape
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MohammedLee Lee
on 6 Dec 2013
Edited: Andrei Bobrov
on 6 Dec 2013
I'm pretty new to Matlab and know what I want to do, just not how to code it. I have a vector in which I want to remove nonzero values which are not in a sequence of two or more i.e.
0 112 58 0 0 0 0 114 0 24 0 0
and turn the 114 and 24 values to 0, but keep any value sequences of two or more.
I've switched to logicals to keep things simple and managed to find out how many times there are these sequences:
ML4= find(diff([-1 ML3 -1]) ~= 0);
runlength = diff(ML4) ;
runlength1 = runlength(1+(ML3(1)==0):2:end);
numberBursts=sum(runlength1>1);
but not a way to keep the original vector shape Any help much appreciated.
Accepted Answer
Andrei Bobrov
on 6 Dec 2013
Edited: Andrei Bobrov
on 6 Dec 2013
x = [0 112 58 0 0 0 0 114 0 24 0 0];
x(strfind([0,x(:)' ~= 0, 0],[0 1 0])) = 0;
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More Answers (1)
Jos (10584)
on 6 Dec 2013
x = [0 112 58 0 0 0 0 114 0 24 0 0]
xx = [false x~=0 false]
ix = 2:numel(x)+1
tf = ~xx(ix-1) & xx(ix) & ~xx(ix+1)
y = x
y(tf) = 0
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