How to delete elements from vector in for loop?
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I have an A vector and I want to remove values less than the 0.1*max(A). Also I want to remove same rows in a B vector with respect to A:
size(B)= 801 1 size(A)=801 1
The error that I got is:
'A null assignment can have only one non-colon index.'
for p=length(A):-1:1
if A(p,1)<max(A)*0.1
A(p,1)=[]; B(p,1)=[];
end
end
采纳的回答
Image Analyst
2017-9-8
Try this:
rowsToDelete = 0.1*max(A);
A(rowsToDelete) = [];
B(rowsToDelete) = [];
No loop needed.
The problem was that it was considering the array as a 2-D array because you included the ",1" in the indexing. And you can't delete just one element from a 2-D array because you can't have arrays with ragged edges. You have to delete a whole column or a whole row, not part of a row or column.
3 个评论
Murat Yetkin
2017-9-8
Andrei Bobrov
2017-9-8
编辑：Andrei Bobrov
2017-9-8
rowsToDelete = A < 0.1*max(A);
A(rowsToDelete) = [];
B(rowsToDelete) = [];
Image Analyst
2017-9-8
Thanks for the correction Andrei!
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