Re: [Matplotlib-users] boxplot bug

2010-02-24 Thread Gökhan Sever 
Probably this change would upset John Tukey if he were alive.

I still wonder how you ignore the data since boxplot is there to represent
the data :)

Tell me how to undiff the changes then I will test your idea.


On Wed, Feb 24, 2010 at 12:03 AM, Ariel Rokem  wrote:

> No - not the 'widths' kwarg. I want something that *looks* like the
> boxplot, but for which I will have control of setting the ranges delimited
> by the box and delimited by the whiskers (in the vertical dimension, not the
> horizontal dimension). I resorted to hacking something from the existing
> code (see attached diff). This simply allows you to over-ride the
> computation of box_y, med_y and the wisk_lo and wisk_hi, which are otherwise
> derived from the data. In other words, it allows you to ignore the data :-)
>
> Cheers - Ariel
>
>
> On Tue, Feb 23, 2010 at 3:15 PM, Gökhan Sever wrote:
>
>>
>>
>> On Tue, Feb 23, 2010 at 5:04 PM, Ariel Rokem  wrote:
>>
>>> Hi -
>>>
>>> yes - but I want something that looks like the generic boxplot, but in
>>> which I can control where the edges of the boxes are placed what the sizes
>>> of the whiskers are. A combination of errorbar and bar, with this
>>> appearance, if you will.
>>>
>>> Cheers - Ariel
>>>
>>>
>>
>> I guess then yours will be a non-standard box-plot because in a regular
>> boxplot median is at 50th percentile, and the edges are at 25 and 75th
>> respectively. There is no consensus for whiskers some uses 5 and 95 some 10
>> - 90 or you could come up with your own pair. Don't get surprised if you see
>> different results for different percentiles. See at
>> http://old.nabble.com/incorrect-boxplot--td25440025.html
>>
>> Probably you don't seek something like boxplot's widths kw arg if I
>> understand you right?
>>
>>
>>
>>>
>>> On Tue, Feb 23, 2010 at 2:49 PM, Gökhan Sever wrote:
>>>


 On Tue, Feb 23, 2010 at 3:02 PM, Ariel Rokem wrote:

> Hi - more generally, is there any way to control the location of the
> median line, the vertical size of the box and the vertical location of the
> whiskers?
>
> Thanks - Ariel
>
>
 Aren't those generically calculated from the data?


 --
 Gökhan

>>>
>>>
>>>
>>> --
>>> Ariel Rokem
>>> Helen Wills Neuroscience Institute
>>> University of California, Berkeley
>>> http://argentum.ucbso.berkeley.edu/ariel
>>>
>>
>>
>>
>> --
>> Gökhan
>>
>
>
>
> --
> Ariel Rokem
> Helen Wills Neuroscience Institute
> University of California, Berkeley
> http://argentum.ucbso.berkeley.edu/ariel
>



-- 
Gökhan
--
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Re: [Matplotlib-users] boxplot bug

2010-02-23 Thread Ariel Rokem 
No - not the 'widths' kwarg. I want something that *looks* like the boxplot,
but for which I will have control of setting the ranges delimited by the box
and delimited by the whiskers (in the vertical dimension, not the horizontal
dimension). I resorted to hacking something from the existing code (see
attached diff). This simply allows you to over-ride the computation of
box_y, med_y and the wisk_lo and wisk_hi, which are otherwise derived from
the data. In other words, it allows you to ignore the data :-)

Cheers - Ariel


On Tue, Feb 23, 2010 at 3:15 PM, Gökhan Sever  wrote:

>
>
> On Tue, Feb 23, 2010 at 5:04 PM, Ariel Rokem  wrote:
>
>> Hi -
>>
>> yes - but I want something that looks like the generic boxplot, but in
>> which I can control where the edges of the boxes are placed what the sizes
>> of the whiskers are. A combination of errorbar and bar, with this
>> appearance, if you will.
>>
>> Cheers - Ariel
>>
>>
>
> I guess then yours will be a non-standard box-plot because in a regular
> boxplot median is at 50th percentile, and the edges are at 25 and 75th
> respectively. There is no consensus for whiskers some uses 5 and 95 some 10
> - 90 or you could come up with your own pair. Don't get surprised if you see
> different results for different percentiles. See at
> http://old.nabble.com/incorrect-boxplot--td25440025.html
>
> Probably you don't seek something like boxplot's widths kw arg if I
> understand you right?
>
>
>
>>
>> On Tue, Feb 23, 2010 at 2:49 PM, Gökhan Sever wrote:
>>
>>>
>>>
>>> On Tue, Feb 23, 2010 at 3:02 PM, Ariel Rokem wrote:
>>>
 Hi - more generally, is there any way to control the location of the
 median line, the vertical size of the box and the vertical location of the
 whiskers?

 Thanks - Ariel


>>> Aren't those generically calculated from the data?
>>>
>>>
>>> --
>>> Gökhan
>>>
>>
>>
>>
>> --
>> Ariel Rokem
>> Helen Wills Neuroscience Institute
>> University of California, Berkeley
>> http://argentum.ucbso.berkeley.edu/ariel
>>
>
>
>
> --
> Gökhan
>



-- 
Ariel Rokem
Helen Wills Neuroscience Institute
University of California, Berkeley
http://argentum.ucbso.berkeley.edu/ariel


box_plot_diff.diff
Description: Binary data
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Re: [Matplotlib-users] boxplot bug

2010-02-23 Thread Gökhan Sever 
On Tue, Feb 23, 2010 at 5:04 PM, Ariel Rokem  wrote:

> Hi -
>
> yes - but I want something that looks like the generic boxplot, but in
> which I can control where the edges of the boxes are placed what the sizes
> of the whiskers are. A combination of errorbar and bar, with this
> appearance, if you will.
>
> Cheers - Ariel
>
>

I guess then yours will be a non-standard box-plot because in a regular
boxplot median is at 50th percentile, and the edges are at 25 and 75th
respectively. There is no consensus for whiskers some uses 5 and 95 some 10
- 90 or you could come up with your own pair. Don't get surprised if you see
different results for different percentiles. See at
http://old.nabble.com/incorrect-boxplot--td25440025.html

Probably you don't seek something like boxplot's widths kw arg if I
understand you right?



>
> On Tue, Feb 23, 2010 at 2:49 PM, Gökhan Sever wrote:
>
>>
>>
>> On Tue, Feb 23, 2010 at 3:02 PM, Ariel Rokem  wrote:
>>
>>> Hi - more generally, is there any way to control the location of the
>>> median line, the vertical size of the box and the vertical location of the
>>> whiskers?
>>>
>>> Thanks - Ariel
>>>
>>>
>> Aren't those generically calculated from the data?
>>
>>
>> --
>> Gökhan
>>
>
>
>
> --
> Ariel Rokem
> Helen Wills Neuroscience Institute
> University of California, Berkeley
> http://argentum.ucbso.berkeley.edu/ariel
>



-- 
Gökhan
--
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Re: [Matplotlib-users] boxplot bug

2010-02-23 Thread Ariel Rokem 
Hi -

yes - but I want something that looks like the generic boxplot, but in which
I can control where the edges of the boxes are placed what the sizes of the
whiskers are. A combination of errorbar and bar, with this appearance, if
you will.

Cheers - Ariel


On Tue, Feb 23, 2010 at 2:49 PM, Gökhan Sever  wrote:

>
>
> On Tue, Feb 23, 2010 at 3:02 PM, Ariel Rokem  wrote:
>
>> Hi - more generally, is there any way to control the location of the
>> median line, the vertical size of the box and the vertical location of the
>> whiskers?
>>
>> Thanks - Ariel
>>
>>
> Aren't those generically calculated from the data?
>
>
> --
> Gökhan
>



-- 
Ariel Rokem
Helen Wills Neuroscience Institute
University of California, Berkeley
http://argentum.ucbso.berkeley.edu/ariel
--
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
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Re: [Matplotlib-users] boxplot bug

2010-02-23 Thread Gökhan Sever 
On Tue, Feb 23, 2010 at 3:02 PM, Ariel Rokem  wrote:

> Hi - more generally, is there any way to control the location of the median
> line, the vertical size of the box and the vertical location of the
> whiskers?
>
> Thanks - Ariel
>
>
Aren't those generically calculated from the data?


-- 
Gökhan
--
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Re: [Matplotlib-users] boxplot bug

2010-02-23 Thread Ariel Rokem 
Hi - more generally, is there any way to control the location of the median
line, the vertical size of the box and the vertical location of the
whiskers?

Thanks - Ariel

On Tue, Feb 23, 2010 at 11:32 AM,  wrote:

>
> # ~~~
> From: Ben Axelrod [mailto:baxel...@coroware.com]
> Sent: Tuesday, February 23, 2010 9:31 AM
> To: matplotlib-users@lists.sourceforge.net
> Subject: [Matplotlib-users] boxplot bug
>
> I found an inconsistency with how boxplots are rendered between version
> 0.99.1 and the svn head.  See attached images.  I have never seen a boxplot
> cross back on itself like this before.  Is this the expected behavior?
>
> Thanks,
> -Ben
> # 
>
> Ben,
>
> Yes it is expected behavior. Confidence intervals around the median can
> easily go beyond the 1st and 3rd quartiles. If you're not comfortable with
> this, throw the data into R. I'm confident you'll get a similar result. I
> believe (not sure) that in the svn version you can specify that the CIs be
> computed from a bootstrapped median. Doing so might tighten the CIs up a
> bit.
>
> -Paul H.
>
>
> --
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> ___
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>



-- 
Ariel Rokem
Helen Wills Neuroscience Institute
University of California, Berkeley
http://argentum.ucbso.berkeley.edu/ariel
--
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
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Re: [Matplotlib-users] boxplot bug

2010-02-23 Thread PHobson 

# ~~~
From: Ben Axelrod [mailto:baxel...@coroware.com] 
Sent: Tuesday, February 23, 2010 9:31 AM
To: matplotlib-users@lists.sourceforge.net
Subject: [Matplotlib-users] boxplot bug

I found an inconsistency with how boxplots are rendered between version 0.99.1 
and the svn head.  See attached images.  I have never seen a boxplot cross back 
on itself like this before.  Is this the expected behavior?
 
Thanks,
-Ben
# 

Ben,

Yes it is expected behavior. Confidence intervals around the median can easily 
go beyond the 1st and 3rd quartiles. If you're not comfortable with this, throw 
the data into R. I'm confident you'll get a similar result. I believe (not 
sure) that in the svn version you can specify that the CIs be computed from a 
bootstrapped median. Doing so might tighten the CIs up a bit.

-Paul H.

--
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[Matplotlib-users] boxplot bug

2010-02-23 Thread Ben Axelrod 
I found an inconsistency with how boxplots are rendered between version 0.99.1 
and the svn head.  See attached images.  I have never seen a boxplot cross back 
on itself like this before.  Is this the expected behavior?

Thanks,
-Ben

Ben Axelrod
Robotics Engineer
(800) 641-2676 x737
[cid:031242817@23022010-0FCD]
www.coroware.com
www.corobot.net

<><><>

boxbug.py
Description: boxbug.py
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