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Re: [Numpy-discussion] A way to compute a 2d histogram
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From: Xavier G. <gn...@ob...> - 2006-11-14 11:31:59
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Hi, IFAICS these new histograms versions have not yet been merged to svn. Are they problems to be solve before to be able to merge them? How could we help? Xavier > Hi, > > Your histograms functions look fine for me :) > As it is a quite usual operation on an array, I would suggest to put > it in numpy as numpy.histogram. IMHO, there is no point to create an > numpy.stats only for histograms (or do you have plans to move other > stats related function to numpy.stats?) > > Xavier. > > >> 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 trac 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... >> <mailto:nic...@ob...>>: >> >> Hi, >> >> it would be great if you could add the weight option in the 1D >> histogram too. >> >> Nicolas >> >> David Huard a écrit : >> > 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...> >> > <mailto: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...> >> > <mailto: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 André >> > 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...> <mailto: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=lnk&kid=120709&bid=263057&dat=121642 >> <http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642> >> > >> <http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >> <http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642>> >> > _______________________________________________ >> > Numpy-discussion mailing list >> > Num...@li... >> <mailto:Num...@li...> >> > <mailto: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 >> Geronimo >> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >> <http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642> >> _______________________________________________ >> 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 Geronimo >> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Numpy-discussion mailing list >> Num...@li... >> https://lists.sourceforge.net/lists/listinfo/numpy-discussion >> >> > > > -- ############################################ Xavier Gnata CRAL - Observatoire de Lyon 9, avenue Charles André 69561 Saint Genis Laval cedex Phone: +33 4 78 86 85 28 Fax: +33 4 78 86 83 86 E-mail: gn...@ob... ############################################ |
