Re: [Numpy-discussion] Negative indexing.

2012-01-16 Thread Nathan Faggian
Hi, I am sorry for the late reply. Benjamin has hit the nail on the head. I guess I am seeing numpy "fancy indexing" as equivalent to integer based coordinate sampling and trying to compare numpy's fancy indexing to something like map_coordinates in scipy. I have never used np.ravel_multi_index(

Re: [Numpy-discussion] Negative indexing.

2012-01-16 Thread Benjamin Root
On Mon, Jan 16, 2012 at 3:30 PM, Benjamin Root wrote: > > > On Mon, Jan 16, 2012 at 3:24 PM, Charles R Harris < > charlesr.har...@gmail.com> wrote: > >> >> >> On Sat, Jan 14, 2012 at 4:53 PM, Nathan Faggian > > wrote: >> >>> Hi, >>> >>> I am finding it less than useful to have the negative index

Re: [Numpy-discussion] Negative indexing.

2012-01-16 Thread Benjamin Root
On Mon, Jan 16, 2012 at 3:24 PM, Charles R Harris wrote: > > > On Sat, Jan 14, 2012 at 4:53 PM, Nathan Faggian > wrote: > >> Hi, >> >> I am finding it less than useful to have the negative index wrapping on >> nd-arrays. Here is a short example: >> >> import numpy as np >> a = np.zeros((3, 3)) >

Re: [Numpy-discussion] Negative indexing.

2012-01-16 Thread Charles R Harris
On Sat, Jan 14, 2012 at 4:53 PM, Nathan Faggian wrote: > Hi, > > I am finding it less than useful to have the negative index wrapping on > nd-arrays. Here is a short example: > > import numpy as np > a = np.zeros((3, 3)) > a[:,2] = 1000 > print a[0,-1] > print a[0,-1] > print a[-1,-1] > > In all c

Re: [Numpy-discussion] Negative indexing.

2012-01-16 Thread Benjamin Root
On Sun, Jan 15, 2012 at 6:54 AM, David Cournapeau wrote: > On Sat, Jan 14, 2012 at 11:53 PM, Nathan Faggian > wrote: > > Hi, > > > > I am finding it less than useful to have the negative index wrapping on > nd-arrays. Here is a short example: > > > > import numpy as np > > a = np.zeros((3, 3)) >

Re: [Numpy-discussion] Negative indexing.

2012-01-15 Thread David Cournapeau
On Sat, Jan 14, 2012 at 11:53 PM, Nathan Faggian wrote: > Hi, > > I am finding it less than useful to have the negative index wrapping on > nd-arrays. Here is a short example: > > import numpy as np > a = np.zeros((3, 3)) > a[:,2] = 1000 > print a[0,-1] > print a[0,-1] > print a[-1,-1] > > In all

Re: [Numpy-discussion] Negative indexing.

2012-01-15 Thread Daniele Nicolodi
On 15/01/12 00:53, Nathan Faggian wrote: > Hi, > > I am finding it less than useful to have the negative index wrapping > on nd-arrays. Here is a short example: > > import numpy as np > a = np.zeros((3, 3)) > a[:,2] = 1000 > print a[0,-1] > print a[0,-1] > print a[-1,-1] > > In all cases 1000 is

[Numpy-discussion] Negative indexing.

2012-01-14 Thread Nathan Faggian
Hi, I am finding it less than useful to have the negative index wrapping on nd-arrays. Here is a short example: import numpy as np a = np.zeros((3, 3)) a[:,2] = 1000 print a[0,-1] print a[0,-1] print a[-1,-1] In all cases 1000 is printed out. What I am after is a way to say "please don't wrap