On Fri, Jan 23, 2009 at 01:39, Matthew Brett <matthew.br...@gmail.com> wrote: > Hi, > >> #This does not work >> import numpy >> a=numpy.zeros(10) >> b=numpy.ones(4, numpy.int) >> a[b] += 1 > > The problem here is that you are setting a[1] to a[1]+1. > > I think you want: > > import numpy > a=numpy.zeros(10) > b=numpy.ones(4, numpy.bool) > a[b] += 1
Judging from his for loop, he does want the integer array. He's doing something like histogramming. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
