lorenzo bolla wrote: > Hi all, > I've got an easy question for you. I looked in Travis' book, but I > couldn't figure out the answer... > > If I have an array1D (obtained reading a stream of numbers with > numpy.fromfile) like that: > > In [150]: data > Out[150]: array([ 2., 3., 4., 3., 4., 5., 4., 5., 6., 5., > 6., 7.], dtype=float32) > > I want it to be considered as "Fortran ordered", so that when I do: > > In [151]: data.shape = (3,4) > > I want to get: > > array([[ 2., 3., 4., 5.], > [ 3., 4., 5., 6.], > [ 4., 5., 6., 7.]], dtype=float32) > > But I get: > > array([[ 2., 3., 4., 3.], > [ 4., 5., 4., 5.], > [ 6., 5., 6., 7.]], dtype=float32) > > How can I do that?
The Fortran orderness is a property of changing the shape from 1-d to 2-d. Assigning to the shape only allows you to do C-ordering. However, the reshape method allows a key-word argument: data.reshape(3,4,order='F') will give you what you want. -Travis _______________________________________________ Numpy-discussion mailing list [email protected] http://projects.scipy.org/mailman/listinfo/numpy-discussion
