matplotlib-devel Mailing List for matplotlib

Hi Michiel,

On 16.04.2013, at 12:03AM, Michiel de Hoon <mjl...@ya...> wrote:

> Can you perhaps ask the Fink developers to provide a framework installation of Python? Most matplotlib users who ran into framework-related bugs were Fink users.

I've already looked for that in the list archives and it seems this topic comes up about once a
year when some other package broke with the non-framework build. Changing the build does
not seem a particular problem, but was always declined as it would mean all (or a large number)
of the other Python-dependent packages would have to be fixed at the same time.
But I can of course bring this up for discussion again pointing out that the macosx backend support
is going to be discontinued.

Cheers,
						Derek

On 16.04.2013 14:58, Pierre Haessig wrote:
> Hi,
>
> Le 16/04/2013 12:14, Detlef Maurel (IKP) a écrit :
>> there seems to be a bug in in pyplot.hist when using histtype="step".
>>
>> I am plotting the attached data to a histogram (see 1.png). In this
>> case I set the limits on the y axis manually.
>>
>> When I don't do this (let the hist function choose the limits), I get
>> the picture in the file 2.png. Only the highest bin is drawn. To be
>> exact, ymin=second highest value, ymax=highest value.
> Can you also send a minimal code that reproduces the bug. I just tried a
> hist(x, histtype='step') command, with x being a random vector and it
> works fine.
>

this works for me, too. Strange... I get the problem with the attached 
dataset using the command

hist(loadtxt("data.txt"),bins=300,histtype="step")

When I plot only a subset of the data (first/second/third/... thousand 
numbers),
the histogram looks fine. It seems it gets wrong when more than roughly 
2000 numbers are used.

I will try to dig more into this and let you know if I find something.


cheers
Detlef

Hi,

Le 16/04/2013 12:14, Detlef Maurel (IKP) a écrit :
> there seems to be a bug in in pyplot.hist when using histtype="step".
>
> I am plotting the attached data to a histogram (see 1.png). In this
> case I set the limits on the y axis manually.
>
> When I don't do this (let the hist function choose the limits), I get
> the picture in the file 2.png. Only the highest bin is drawn. To be
> exact, ymin=second highest value, ymax=highest value. 
Can you also send a minimal code that reproduces the bug. I just tried a
hist(x, histtype='step') command, with x being a random vector and it
works fine.

best,
Pierre

Hi all,

there seems to be a bug in in pyplot.hist when using histtype="step".

I am plotting the attached data to a histogram (see 1.png). In this case 
I set the limits on the y axis manually.

When I don't do this (let the hist function choose the limits), I get 
the picture in the file 2.png. Only the highest bin is drawn. To be 
exact, ymin=second highest value, ymax=highest value.

To solve this, I suggest the patch in the attachment.

I also removed the for loop here, because I don't see why 0 height bins 
should be filtered out (but this is just a suggestion).


cheers,

Detlef Maurel