remove rows that contain zeros from cells array in matlab
이전 댓글 표시
I have a cell array resulted from a certain code as follows:
m =
[ 0] 'GO:0008150'
'GO:0008150' 'GO:0016740'
'GO:0016740' 'GO:0016787'
'GO:0016787' 'GO:0006810'
'GO:0008150' 'GO:0006412'
'GO:0016740' 'GO:0004672'
'GO:0016740' 'GO:0016779'
'GO:0016787' 'GO:0004386'
'GO:0016787' 'GO:0003774'
'GO:0016787' 'GO:0016298'
'GO:0006810' 'GO:0016192'
'GO:0006412' 'GO:0005215'
'GO:0004672' 'GO:0030533'
[ 0] 'GO:0008150'
[ 0] 'GO:0016740'
'GO:0008150' 'GO:0016787'
'GO:0008150' 'GO:0006810'
'GO:0006810' 'GO:0006412'
[ 0] 'GO:0004672'
[ 0] 'GO:0016779'
[ 0] 'GO:0004386'
'GO:0016192' 'GO:0003774'
[ 0] 'GO:0016298'
[ 0] 'GO:0016192'
'GO:0006810' 'GO:0005215'
'GO:0005215' 'GO:0030533'
I need to remove the rows which contains zero (for example: in the above cells array m, row one should be deleted because we have a zero in the first column). so how can I create an array from this array that doesn't contain zeros?
댓글 수: 1
Andrei Bobrov
2012년 10월 25일
m = m(cellfun(@ischar,m(:,1)),:);
채택된 답변
추가 답변 (3개)
If efficiency matters, it should be considered, than cellfun is slow when operating on anonymous functions. Functions handles are better, but the built-in string functions are really fast:
idx = cellfun('isclass', c, 'char');
c = c(idx, :);
What a pitty that TMW hides them in the documentation instead of mentioning their efficiency.
I'm assuming the zeros would only appear in the first column (it seems so from your example), but the following is easily modified if not,
idx=cellfun(@(c) isequal(c,0), m(:,1));
m(idx,:)=[];
Azzi Abdelmalek
2012년 10월 25일
out=m(all(cellfun(@any,m),2),:)
카테고리
도움말 센터 및 File Exchange에서 Matrix Indexing에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!