Re: [Numpy-discussion] A way to compute a 2d histogram

[David H. <dav...@gm...>]

Nicolas, thanks for the bug report, I fooled around with argument passing
and should have checked every case.

You'll find the histogram function that deals with weights on the numpy tra=
c
ticket 189, <http://projects.scipy.org/scipy/numpy/ticket/189>
I'm waiting for some hints as to where the histogram function should reside
(numpy.histogram, numpy.stats.histogram, ...) before submitting a patch .

Salut,
David


2006/10/25, Nicolas Champavert <nic...@ob...>:
>
> Hi,
>
>     it would be great if you could add the weight option in the 1D
> histogram too.
>
> Nicolas
>
> David Huard a =E9crit :
> > Xavier,
> > Here is the patch against svn. Please report any bug. I haven't had
> > the time to test it extensively, something that should be done before
> > commiting the patch to the repo. I'd appreciate your feedback.
> >
> > David
> >
> > 2006/10/24, David Huard <dav...@gm...
> > <mailto:dav...@gm...>>:
> >
> >     Hi Xavier,
> >
> >     You could tweak histogram2d to do what you want, or you could give
> >     me a couple of days and I'll do it and let you know. If you want
> >     to help, you could write a test using your particular application
> >     and data.
> >
> >     David
> >
> >
> >     2006/10/24, Xavier Gnata < gn...@ob...
> >     <mailto:gn...@ob...>>:
> >
> >         Hi,
> >
> >         I have a set of 3 1D large arrays.
> >         The first 2 one stand for the coordinates of particules and
> >         the last one
> >         for their masses.
> >         I would like to be able to plot this data ie to compute a 2D
> >         histogram
> >         summing the masses in each bin.
> >         I cannot find a way to do that without any loop on the indices
> >         resulting
> >         too a very slow function.
> >
> >         I'm looking for an elegant way to do that with numpy (or
> >         scipy??) function.
> >
> >         For instance, scipy.histogram2d cannot do the job because it
> >         only counts
> >         the number of samples in each bin.
> >         There is no way to deal with weights.
> >
> >         Xavier.
> >
> >
> >         --
> >         ############################################
> >         Xavier Gnata
> >         CRAL - Observatoire de Lyon
> >         9, avenue Charles Andr=E9
> >         69561 Saint Genis Laval cedex
> >         Phone: +33 4 78 86 85 28
> >         Fax: +33 4 78 86 83 86
> >         E-mail: gn...@ob... <mailto:gn...@ob...=
>
> >         ############################################
> >
> >
> >
> -------------------------------------------------------------------------
> >         Using Tomcat but need to do more? Need to support web
> >         services, security?
> >         Get stuff done quickly with pre-integrated technology to make
> >         your job easier
> >         Download IBM WebSphere Application Server v.1.0.1 based on
> >         Apache Geronimo
> >
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> >         <
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642>
> >         _______________________________________________
> >         Numpy-discussion mailing list
> >         Num...@li...
> >         <mailto:Num...@li...>
> >         https://lists.sourceforge.net/lists/listinfo/numpy-discussion
> >
> >
> >
> >
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronim=
o
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> _______________________________________________
> Numpy-discussion mailing list
> Num...@li...
> https://lists.sourceforge.net/lists/listinfo/numpy-discussion
>