MATLAB: Removing matrix rows after the first element of a row becomes too big

findMATLABmatricesremoving rows

I want to remove all of the rows in A after the element of the first column of the nth row passes, say 10. Let A be
A = [ 1 1 1 1 1 1 1 1 1
3 3 3 3 3 3 3 3 3
4 4 4 4 4 4 4 4 4
7 7 7 7 7 7 7 7 7
8 8 8 8 8 8 8 8 8
10 10 10 10 10 10 10 10 10
11 11 11 11 11 11 11 11 11
25 25 25 25 25 25 25 25 25 ]
How do I do this without knowing what row the first element will be larger than 10 at?

Best Answer

  • [ii,jj]=find(A>10,1);
    A(ii:end,:)=[]