В Mon, 10 Oct 2011 10:03:48 +0100 Bob Dowling <rjd4+nu...@cam.ac.uk> пишет:
> > On 10/10/11 09:53, Andrey N. Sobolev wrote: > > > I have 2 arrays - A with the dimensions of 1000x4 and B with the > > dimensions of 5000x4. B doesn't (hopefully) contain any rows that > > are not in A. I need to create a lookup array C, the i-th value of > > which will be the index of B[i] in A. In the (very rare) case when > > B[i] is not in A C[i] should be equal to -1. > > May we assume that there are no repeats in A? (i.e. no cases where > two different indices are both valid?) > Yes, rows in A are unique and sorted. One more typo found - instead of np.which in the previous e-mail it has to be np.where, I don't know what I thought about :) Thanks in advance! Andrey _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion