Re: [Numpy-discussion] suggested change of behavior for interp

2013-06-04 Thread Eric Firing
On 2013/06/04 4:15 PM, Benjamin Root wrote: > Could non-monotonicity be detected as part of the interp process? > Perhaps a sign switch in the deltas? There are two code paths, depending on the number of points to be interpolated. When it is greater than the size of the table, the deltas are pr

Re: [Numpy-discussion] suggested change of behavior for interp

2013-06-04 Thread Benjamin Root
Could non-monotonicity be detected as part of the interp process? Perhaps a sign switch in the deltas? I have been bitten by this problem too. Cheers! Ben Root On Jun 4, 2013 9:08 PM, "Eric Firing" wrote: > > On 2013/06/04 2:05 PM, Charles R Harris wrote: > > > > > > On Tue, Jun 4, 2013 at 12:0

Re: [Numpy-discussion] suggested change of behavior for interp

2013-06-04 Thread Eric Firing
On 2013/06/04 2:05 PM, Charles R Harris wrote: > > > On Tue, Jun 4, 2013 at 12:07 PM, Slavin, Jonathan > mailto:jsla...@cfa.harvard.edu>> wrote: > > Hi, > > I would like to suggest that the behavior of numpy.interp be changed > regarding treatment of situations in which the x-coordinate

Re: [Numpy-discussion] suggested change of behavior for interp

2013-06-04 Thread Charles R Harris
On Tue, Jun 4, 2013 at 12:07 PM, Slavin, Jonathan wrote: > Hi, > > I would like to suggest that the behavior of numpy.interp be changed > regarding treatment of situations in which the x-coordinates are not > monotonically increasing. Specifically, it seems to me that interp should > work correct

[Numpy-discussion] request for SWIG numpy.i users

2013-06-04 Thread Ralf Gommers
Hi, If you're using or are very familiar with SWIG and the numpy.i interface to it, please help to test and/or review https://github.com/numpy/numpy/pull/3148. It's a fairly major update to numpy.i by Bill Spotz, containing the following: - support for 4D arrays and memory managed output argumen

[Numpy-discussion] suggested change of behavior for interp

2013-06-04 Thread Slavin, Jonathan
Hi, I would like to suggest that the behavior of numpy.interp be changed regarding treatment of situations in which the x-coordinates are not monotonically increasing. Specifically, it seems to me that interp should work correctly when the x-coordinate is decreasing monotonically. Clearly it can

Re: [Numpy-discussion] numpy tests errors and failures

2013-06-04 Thread Warren Weckesser
On Tue, Jun 4, 2013 at 7:52 AM, Warren Weckesser wrote: > > On Tue, Jun 4, 2013 at 1:20 AM, Tim Burgess wrote: > >> On Sat, 2013-06-01 at 20:09 -0400, Warren Weckesser wrote: >> >> >> > I'm using Ubuntu 12.04, so I suspect I won't be the only one who sees >> > these. >> > >> gcc on 12.04 (precis

Re: [Numpy-discussion] SVD errors

2013-06-04 Thread Robert Kern
On Tue, Jun 4, 2013 at 5:18 PM, Amir Mohammadi <183.a...@gmail.com> wrote: > Hello Everyone, > > I am trying to write my own svd function to use the "dgesvd" method from > lapack, but my problem is that I cannot find the "dgesvd" method from this > import "from numpy.linalg import lapack_lite". >

Re: [Numpy-discussion] SVD errors

2013-06-04 Thread Amir Mohammadi
Robert Kern gmail.com> writes: > > On Mon, Feb 9, 2009 at 16:25, M Trumpis berkeley.edu> wrote: > > I played around with a C translation of that test program, and found > > that dgesvd (but not dgesdd) happens to converge and return all > > non-negative singular values for both operators I was

Re: [Numpy-discussion] numpy tests errors and failures

2013-06-04 Thread Warren Weckesser
On Tue, Jun 4, 2013 at 1:20 AM, Tim Burgess wrote: > On Sat, 2013-06-01 at 20:09 -0400, Warren Weckesser wrote: > > > > I'm using Ubuntu 12.04, so I suspect I won't be the only one who sees > > these. > > > gcc on 12.04 (precise) should be 4.6.3 > > See > > http://packages.ubuntu.com/search?keyw