[SciPy-user] Pb with numpy.histogram

massimo sandal massimo.sandal@unibo...
Mon Oct 1 09:51:58 CDT 2007

David Huard ha scritto:
> Hi LB,
> I think histogram has had this weird behavior since the numeric era and 
> a lot of code may break if we fix it. 
 > Basically, histogram discards the
 > lower than range values as outliers but puts the higher than range
 > values into the last bin.
 > I'm generally using my own histograming routines, I could send them your
 > way if you're interested.

I'm not a SciPy developer so my weight on the discussion is next to 
zero, but I personally think that other people code breaking is not a 
good reason to keep a buggy function.

We don't want code that relies on bugs like they were features: we're 
not Microsoft, aren't we? ;)

People should be informed before updating, of course, and maybe an 
oldhistogram() function could be maintained to allow for easy updating, 
but if histogram() behavour is so flawed that people is forced to 
rewrite their own routines, please fix it.


Massimo Sandal
University of Bologna
Department of Biochemistry "G.Moruzzi"

snail mail:
Via Irnerio 48, 40126 Bologna, Italy


tel: +39-051-2094388
fax: +39-051-2094387
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