plot - plotting from a loop in matlab -


i strange problem in matlab code, part of code:

for k=1:length(box11)     num_pts1(k)=sum(length(find(box11(:,k)>0)));     size1=sum(length(find(box11(:,:)>0)));     perc1(k)=(num_pts1(k)/size1)*100; end plot(delta,perc1(k),'*')

however, problem perc1 fixed in plot. see straight line in graph. have different numbers give curve line me.. plzzzzzzzzzzzzzzzz, :( !!!

you should recall length returns length of array. so, in instruction

num_pts1(k)=sum(length(find(box11(:,k)>0)));

the operator sum acts on scalar (which equals length of array find(box11(:,k)>0)), , not on array. same holds true instruction

size1=sum(length(find(box11(:,:)>0)));

so, if length of find(box11(:,k)>0) not change k, perc1 keep constant.


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