howto convert float array to array of integers
hi all, I have an array like array([ 1., 0., 2., -10.]) what is most efficient (i.e. fastest) way to convert the one to array of integers? array([ 1, 0, 2, -10]) Thx in advance, D.
import numpy as n a = n.array([1.,0.,2.,-10.]) a.dtype
print a [ 1. 0. 2. -10.] b = a.astype(n.integer) b.dtype
I usually use the astype method. dtype('float64') dtype('int32')
print b [ 1 0 2 -10]
dmitrey wrote:
hi all, I have an array like array([ 1., 0., 2., -10.]) what is most efficient (i.e. fastest) way to convert the one to array of integers? array([ 1, 0, 2, -10])
Thx in advance, D. _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
-- Christopher Hanley Systems Software Engineer Space Telescope Science Institute 3700 San Martin Drive Baltimore MD, 21218 (410) 338-4338
what about astype? a.astype(t) -> Copy of array cast to type t. Cast array m to type t. t can be either a string representing a typecode, or a python type object of type int, float, or complex. L. On 10/5/07, dmitrey <dmitrey.kroshko@scipy.org> wrote:
hi all, I have an array like array([ 1., 0., 2., -10.]) what is most efficient (i.e. fastest) way to convert the one to array of integers? array([ 1, 0, 2, -10])
Thx in advance, D. _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
On Fri, 05 Oct 2007, dmitrey wrote:
I have an array like array([ 1., 0., 2., -10.]) what is most efficient (i.e. fastest) way to convert the one to array of integers? array([ 1, 0, 2, -10])
Use ``astype``. Cheers, Alan Isaac
import numpy as N x = N.array([1,2,3],dtype='float') x array([ 1., 2., 3.]) x.astype('int') array([1, 2, 3])
participants (4)
-
Alan Isaac -
Christopher Hanley -
dmitrey -
lorenzo bolla