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

[Nicolas C. <nic...@ob...>]

Hi,

    it would be great if you could add the weight option in the 1D=20
histogram too.

Nicolas

David Huard a =E9crit :
> Xavier,
> Here is the patch against svn. Please report any bug. I haven't had=20
> the time to test it extensively, something that should be done before=20
> commiting the patch to the repo. I'd appreciate your feedback.
>
> David
>
> 2006/10/24, David Huard <dav...@gm...=20
> <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
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>         E-mail: gn...@ob... <mailto:gn...@ob...=
>
>         ############################################
>
>
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