Anthony Liu wrote: > I am talking about the 'take' method of numarray. > > See here for more info: > > http://stsdas.stsci.edu/numarray/Doc/node33.html > > If I initialize a matrix 'mymatrix' by zeros((3,3), > type="Float64"), I get a 3*3 matrix of all zeros. > > Look: > > >>>>from numarray import * >>>>mymatrix = zeros((3,3), type="Float64") >>>>mymatrix > > array([[ 0., 0., 0.], > [ 0., 0., 0.], > [ 0., 0., 0.]]) > > > I want to change the zeros of only the first column to > 1's. In other words, I want to get: > > array([[ 1., 0., 0.], > [ 1., 0., 0.], > [ 1., 0., 0.]]) > > The 'take' method is able to take out the first > column, but I am not sure if there is a good way of > changing all values of the first column to 1's. > > Of course, I know that I can achieve my goal pretty > easily with this: > > for i in range(3): mymatrix[i,0] = 1.0 > > I am just wondering if there is an existing numarray > method that elegantly does it for me.
mymatrix[:,0] = 1.0 > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
