Re: [matplotlib-devel] Patchs for changing ticks messing up mplot3d and tick-get/setters

2010-08-25 Thread Reinier Heeres 
Hi all,

Sorry for not finishing this nicely. I was looking at this last
weekend, and concluded that this approach was not the way to fix the
problem. The real problem was that we still had the old X/Y axes
around and had to use new functions for the 3d axes (e.g.
set_xticks*3d*, set_xlim*3d* etc). I just extracted these fixes from
my working directory and committed them to svn (r8656). There are a
few more things to polish; for example it would be good to check
whether we have to change the view limits if we change the ticks.

Next on my list is cleaning up some of the alpha handling in mplot3d.

Cheers,
Reinier

On Tue, Aug 24, 2010 at 9:04 PM, Benjamin Root  wrote:
> On Tue, Aug 24, 2010 at 1:48 PM, Erik Tollerud 
> wrote:
>>
>> Sorry for the re-ping if it was taken care of in some way I didn't
>> undertand, but this doesn't seem to have been changed on the trunk
>> svn... should it have been, or is there some other branch that this
>> stuff is being worked on?
>>
>> On Tue, Jul 27, 2010 at 10:14 AM, Erik Tollerud 
>> wrote:
>> > Great - if anything's unclear, I can fairly easily make a test case as
>> > Benjamin suggested, so just let me know if that's necessary - thank!
>> >
>> > On Tue, Jul 27, 2010 at 12:27 AM, Reinier Heeres 
>> > wrote:
>> >> Hi Erik,
>> >>
>> >> Sorry for the delay. From just looking at the diff I would say it's a
>> >> great addition. I'll test tomorrow and push it if it works (which I
>> >> assume it does).
>> >>
>> >> Cheers,
>> >> Reinier
>> >>
>> >> On Tue, Jul 27, 2010 at 2:55 AM, Erik Tollerud
>> >>  wrote:
>> >>> Just a quick ping about this - did it get applied, or was there
>> >>> something wrong with it? (Or am I just too impatient?)
>> >>>
>> >>> On Mon, Jul 19, 2010 at 4:26 AM, Erik Tollerud
>> >>>  wrote:
>>  I noticed some odd behavior when trying to set ticks on 3d plots made
>>  using mplot3d.Axes3D ... specifically, if you tries to access any of
>>  the 3D axes and change the ticks, it would result in a plot all
>>  squashed to one side (indicating some sort of projection problem).
>>  After a bit of digging, I discovered the source of the problem:
>>  axis.XAxis, the base of the 3D Axis class, calls set_view_interval,
>>  which is not overridden in mplot3d.axis3d.Axis, causing the wrong
>>  interval to get the range assigned when ticks were added.  So the
>>  solution was to implement set_view_interval on the 3D Axis.  That fix
>>  is attached as a diff against the current svn in mpl3d-ticks-fix.diff
>>  .  Now setting ticks seems to work just fine, so I've included
>>  another
>>  diff that additionally implements set_?ticks3d and get_?ticks3d
>>  methods for Axes3D - that's attached as
>>  mpl3d-ticks-fix-add-methods.diff .
>> 
>>  --
>>  Erik Tollerud
>> 
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> Erik Tollerud
>> >>>
>> >>>
>> >>> --
>> >>> The Palm PDK Hot Apps Program offers developers who use the
>> >>> Plug-In Development Kit to bring their C/C++ apps to Palm for a share
>> >>> of $1 Million in cash or HP Products. Visit us here for more details:
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>> >>> ___
>> >>> Matplotlib-devel mailing list
>> >>> [email protected]
>> >>> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>> >>>
>> >>
>> >>
>> >>
>> >> --
>> >> Reinier Heeres
>> >> Tel: +31 6 10852639
>> >>
>> >
>> >
>> >
>> > --
>> > Erik Tollerud
>> >
>>
>>
>>
>> --
>> Erik Tollerud
>>
>
> I don't believe so, and I think this was shortly before Reinier went on
> vacation.  Erik, my question still applies.  If you can make a nice short
> example that demonstrates the problem, we can then include it as a test to
> make sure it will always work properly.
>
> If the patch passes the test, I can apply it myself now.
>
> Ben Root
>
>



-- 
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Tel: +31 6 10852639

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Re: [matplotlib-devel] Patch/fix for two legend oddities/bugs

2010-08-25 Thread Jae-Joon Lee 
Hmm, it seems that somehow I only applied the patch to the trunk.

http://matplotlib.svn.sourceforge.net/viewvc/matplotlib?view=revision&revision=8418

But I think the patch also need to be applied to the maint. version.
I'll see what I can do.

Regards,

-JJ


On Wed, Aug 25, 2010 at 3:42 AM, Erik Tollerud  wrote:
> Did this fix ever get applied?  I was looking at some other svn
> changes and it still says none of this part of legend.py has been
> altered...
>
> On Thu, Jun 10, 2010 at 8:50 AM, Jae-Joon Lee  wrote:
>> On Wed, Jun 9, 2010 at 7:15 PM, Erik Tollerud  
>> wrote:
>>> Jae-Joon, your patch looks to be effectively the same except for
>>> slightly different behavior when more than 3 points are present... but
>>> that was what was originally intended - the numpoints-> scatterpoints
>>> was a good catch!
>>
>> I'm not sure if I put those numbers in the first places (maybe not),
>> yes, that was what was originally intended. And I'm inclined to leave
>> it as is.
>>
>> I'll commit the change soon.
>> Thanks again.
>>
>> -JJ
>>
>
>
>
> --
> Erik Tollerud
>

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Re: [matplotlib-devel] purpose of 'stepfilled' in hist()?

2010-08-25 Thread Benjamin Root 
On Wed, Aug 25, 2010 at 12:00 AM, Anne Archibald  wrote:

> On 24 August 2010 22:22, Benjamin Root  wrote:
> > On Tue, Aug 24, 2010 at 9:01 PM, Anne Archibald <
> [email protected]>
> > wrote:
> >>
> >> On 24 August 2010 19:16, Erik Tollerud  wrote:
> >> > Whoops, yes, that should be True... Also realized a slight error in
> >> > the description of how the mimum is set - both of those are fixed in
> >> > the attached diff.
> >>
> >> Um, this is a kind of important point of style: it is much better to
> >> use "if foo:" than "if foo is True:" or even "if foo == True:".
> >> Long-standing python convention allows things like 1, 7.0, numpy
> >> booleans that are true, and nonempty lists to have a value of True.
> >> Using "if foo:", this works. Using "if foo is True:", this cannot
> >> possibly work; even though 1==True, it is not true that 1 is True.
> >> "is" has a very specific meaning that should be used only when
> >> appropriate (generally, for None or for mutable objects).
>
> [snip]
>
> > While it probably could be better done, the logic of the entire if
> statement
> > is to first check to see if someone explicitly set a True value (default
> is
> > False), and that sets the minimum to 1.0.  Then, if it isn't explicitly
> > True, then it checks to see if it is a numerical value and uses that
> value
> > to indicate the minimum.  Only if it is None or False does it then go to
> the
> > last branch which would set minimum to zero.
> >
> > Maybe it should use a cbook function that test for a numerical value
> > explicitly instead and do that first, then have a check for the
> Truthiness
> > of log?
>
> I realize API changes are a pain, but this seems error-prone from a
> user's point of view. If they accidentally use 1 instead of "True" -
> common among C or old Python users - suddenly the function does
> something startling. (There's also an ambiguity between zero and
> False, but that's probably not so serious here.) If I were designing
> an API from scratch I'd probably go with a separate parameter for the
> minimum (or not, if ylim can fix it after the fact) and a dedicated
> one for "should we use a log scale". Failing that, maybe the string
> "auto" to indicate automatic minimum values and None for a default?
>
> If you're going to use True to mean something different from 1,
> though, I'd make sure to put a warning in the docstring. Unfortunately
> you can't just rely on duck typing to tell numeric values from
> booleans, since float(True) is 1.0. On the other hand, "is True" fails
> for numpy booleans, and "== True" passes for 1.0. So if this is your
> constraint, I'm not sure you can do better than "is True", but it's a
> huge UI wart.
>
> Anne
>
> P.S. keep in mind that the values users pass are not always directly
> visible to users - they might be passing a value output from someone
> else's routine that is described as returning a boolean value but
> actually returns an integer. This is particularly common among C or
> Fortran routines, which are in turn very common in the numerical
> world. From the other direction, if you pull a value out of a boolean
> numpy array, you get a numpy boolean which will never "is True". -A
>

I agree.  After thinking about it further, I realized a few other ways that
this will silently fail.  Quite personally, I feel that the hist/bar family
of functions ought to be nuked from orbit.  It is absolutely amazing just
how convoluted those functions are.  We seem to be acquiescing to every
single feature request rather than thinking about how one could use the
existing matplotlib tools.  For example, if one wants error bars on their
histograms/bar plots, then they should be able to call hist() and then
errorbars() to achieve their needs.

For logarithmic hist(), I am not exactly sure why we should have a keyword
argument to indicate a mode of operation.  We have loglog(), semilogx(),
semilogy().  A user could also call set_xscale() or set_yscale() and the
limits accordingly. I am not saying they are the best examples/approaches,
merely pointing out the different ways we have for log plotting.

Should we have histlog() and barlog() functions?  Are we willing to make an
effort to look at some of these plotting functions and clean them up?

Ben Root
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[matplotlib-devel] Fwd: wrong PDF on matplotlib web site?

2010-08-25 Thread Michael Droettboom 


 Original Message 
Subject:wrong PDF on matplotlib web site?
Date:   Wed, 25 Aug 2010 10:32:03 -0400
From:   Joe Harrington 
Reply-To:   [email protected]
To: Michael Droettboom 
CC: [email protected]



Hi Michael,

I just noticed that the User Guide PDF on the Matplotlib web site says
0.99.3, even though the page it's downloaded from says 1.0.0.

Also, there's no main Download link, just the one in News.

Just FYI, do as you will, and thanks for all you do on Matplotlib!

--jh--

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Re: [matplotlib-devel] purpose of 'stepfilled' in hist()?

2010-08-25 Thread Eric Firing 
On 08/25/2010 04:50 AM, Benjamin Root wrote:
> On Wed, Aug 25, 2010 at 12:00 AM, Anne Archibald
> mailto:[email protected]>> wrote:
>
> On 24 August 2010 22:22, Benjamin Root  > wrote:
>  > On Tue, Aug 24, 2010 at 9:01 PM, Anne Archibald
> mailto:[email protected]>>
>  > wrote:
>  >>
>  >> On 24 August 2010 19:16, Erik Tollerud  > wrote:
>  >> > Whoops, yes, that should be True... Also realized a slight
> error in
>  >> > the description of how the mimum is set - both of those are
> fixed in
>  >> > the attached diff.
>  >>
>  >> Um, this is a kind of important point of style: it is much better to
>  >> use "if foo:" than "if foo is True:" or even "if foo == True:".
>  >> Long-standing python convention allows things like 1, 7.0, numpy
>  >> booleans that are true, and nonempty lists to have a value of True.
>  >> Using "if foo:", this works. Using "if foo is True:", this cannot
>  >> possibly work; even though 1==True, it is not true that 1 is True.
>  >> "is" has a very specific meaning that should be used only when
>  >> appropriate (generally, for None or for mutable objects).
>
> [snip]
>
>  > While it probably could be better done, the logic of the entire
> if statement
>  > is to first check to see if someone explicitly set a True value
> (default is
>  > False), and that sets the minimum to 1.0.  Then, if it isn't
> explicitly
>  > True, then it checks to see if it is a numerical value and uses
> that value
>  > to indicate the minimum.  Only if it is None or False does it
> then go to the
>  > last branch which would set minimum to zero.
>  >
>  > Maybe it should use a cbook function that test for a numerical value
>  > explicitly instead and do that first, then have a check for the
> Truthiness
>  > of log?
>
> I realize API changes are a pain, but this seems error-prone from a
> user's point of view. If they accidentally use 1 instead of "True" -
> common among C or old Python users - suddenly the function does
> something startling. (There's also an ambiguity between zero and
> False, but that's probably not so serious here.) If I were designing
> an API from scratch I'd probably go with a separate parameter for the
> minimum (or not, if ylim can fix it after the fact) and a dedicated
> one for "should we use a log scale". Failing that, maybe the string
> "auto" to indicate automatic minimum values and None for a default?
>
> If you're going to use True to mean something different from 1,
> though, I'd make sure to put a warning in the docstring. Unfortunately
> you can't just rely on duck typing to tell numeric values from
> booleans, since float(True) is 1.0. On the other hand, "is True" fails
> for numpy booleans, and "== True" passes for 1.0. So if this is your
> constraint, I'm not sure you can do better than "is True", but it's a
> huge UI wart.
>
> Anne
>
> P.S. keep in mind that the values users pass are not always directly
> visible to users - they might be passing a value output from someone
> else's routine that is described as returning a boolean value but
> actually returns an integer. This is particularly common among C or
> Fortran routines, which are in turn very common in the numerical
> world. From the other direction, if you pull a value out of a boolean
> numpy array, you get a numpy boolean which will never "is True". -A
>
>
> I agree.  After thinking about it further, I realized a few other ways
> that this will silently fail.  Quite personally, I feel that the
> hist/bar family of functions ought to be nuked from orbit.  It is
> absolutely amazing just how convoluted those functions are.  We seem to
> be acquiescing to every single feature request rather than thinking
> about how one could use the existing matplotlib tools.  For example, if
> one wants error bars on their histograms/bar plots, then they should be
> able to call hist() and then errorbars() to achieve their needs.

Ben,

"Me, too!" regarding dismay over the hist/bar family (including box 
plots).  They need to be rethought and re-implemented in their own 
module.  Dealing with the transition may be a pain, but so is every 
experience with trying to maintain them.

Eric


>
> For logarithmic hist(), I am not exactly sure why we should have a
> keyword argument to indicate a mode of operation.  We have loglog(),
> semilogx(), semilogy().  A user could also call set_xscale() or
> set_yscale() and the limits accordingly. I am not saying they are the
> best examples/approaches, merely pointing out the different ways we have
> for log plotting.
>
> Should we have histlog() and barlog() functions?  Are we willing to make
> an effort to look at some of these plotting functions and clean them up?

Re: [matplotlib-devel] Fwd: wrong PDF on matplotlib web site?

2010-08-25 Thread John Hunter 
I've updated the PDF on the main docs page

  http://matplotlib.sourceforge.net/contents.html

Direct link: http://matplotlib.sf.net/Matplotlib.pdf


JDH

On Wed, Aug 25, 2010 at 11:01 AM, Michael Droettboom wrote:

>
>  Original Message   Subject: wrong PDF on matplotlib web
> site?  Date: Wed, 25 Aug 2010 10:32:03 -0400  From: Joe Harrington
>Reply-To: [email protected] 
>  To:
> Michael DroettboomCC:
> [email protected]
>
> Hi Michael,
>
> I just noticed that the User Guide PDF on the Matplotlib web site says
> 0.99.3, even though the page it's downloaded from says 1.0.0.
>
> Also, there's no main Download link, just the one in News.
>
> Just FYI, do as you will, and thanks for all you do on Matplotlib!
>
> --jh--
>
>
>
> --
> Sell apps to millions through the Intel(R) Atom(Tm) Developer Program
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> worldwide. Take advantage of special opportunities to increase revenue and
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>
>
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[matplotlib-devel] A small fix for backend specification...

2010-08-25 Thread Fernando Perez 
Hi folks,

I'd like to know if the fix below looks reasonable to you, this is a
diff against current svn trunk:

dreamweaver[matplotlib]> svn diff
Index: __init__.py
===
--- __init__.py (revision 8656)
+++ __init__.py (working copy)
@@ -880,10 +880,14 @@
 if 'matplotlib.backends' in sys.modules:
 if warn: warnings.warn(_use_error_msg)
 return
-arg = arg.lower()
 if arg.startswith('module://'):
 name = arg
 else:
+# For non-module backends, normalize name to lowercase.  Note that this
+# must NOT be done to module backends, because those need to be valid
+# Python module specifications that can be imported, and Python module
+# names *are* case sensitive.
+arg = arg.lower()
 be_parts = arg.split('.')
 name = validate_backend(be_parts[0])
 if len(be_parts) > 1:

# END PATCH

I hope the comments explain clearly enough the problem.  For a bit of
context, this is biting us in ipython where we're building a custom
backend for Qt terminals that inline mpl figures (very neat [1]), but
our backend's name is module://IPython.zmq.pylab.backend_payload_svg.
If you lowercase that, it won't import later.  I know we shouldn't
have called IPython's module with that funny capitalization, but it's
a bit late to change now, I'm afraid.

Do you foresee any problems with the above change?

If everyone OK's it, I'm happy to commit it, but I won't do anything
until others better informed than I reply.

Regards,

f

[1] teaser for the curious:
http://fperez.org/tmp/ipython_qt_pylab.png.  All code is in the
'newkernel' github branch.  Special credits to Evan Patterson from
Enthought, the Qt brains behind the magic.

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Re: [matplotlib-devel] A small fix for backend specification...

2010-08-25 Thread Gael Varoquaux 
On Wed, Aug 25, 2010 at 02:57:50PM -0700, Fernando Perez wrote:
> [1] teaser for the curious:
> http://fperez.org/tmp/ipython_qt_pylab.png.  All code is in the
> 'newkernel' github branch.  Special credits to Evan Patterson from
> Enthought, the Qt brains behind the magic.

Freeking awesome!

Go go team!

Gaël

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Re: [matplotlib-devel] A small fix for backend specification...

2010-08-25 Thread Eric Firing 
On 08/25/2010 11:57 AM, Fernando Perez wrote:
> Hi folks,
>
> I'd like to know if the fix below looks reasonable to you, this is a
> diff against current svn trunk:
>
> dreamweaver[matplotlib]>  svn diff
> Index: __init__.py
> ===
> --- __init__.py   (revision 8656)
> +++ __init__.py   (working copy)
> @@ -880,10 +880,14 @@
>   if 'matplotlib.backends' in sys.modules:
>   if warn: warnings.warn(_use_error_msg)
>   return
> -arg = arg.lower()
>   if arg.startswith('module://'):
>   name = arg
>   else:
> +# For non-module backends, normalize name to lowercase.  Note that 
> this
> +# must NOT be done to module backends, because those need to be valid
> +# Python module specifications that can be imported, and Python 
> module
> +# names *are* case sensitive.
> +arg = arg.lower()
>   be_parts = arg.split('.')
>   name = validate_backend(be_parts[0])
>   if len(be_parts)>  1:
>
> # END PATCH
>
> I hope the comments explain clearly enough the problem.  For a bit of
> context, this is biting us in ipython where we're building a custom
> backend for Qt terminals that inline mpl figures (very neat [1]), but
> our backend's name is module://IPython.zmq.pylab.backend_payload_svg.
> If you lowercase that, it won't import later.  I know we shouldn't
> have called IPython's module with that funny capitalization, but it's
> a bit late to change now, I'm afraid.
>
> Do you foresee any problems with the above change?
>
> If everyone OK's it, I'm happy to commit it, but I won't do anything
> until others better informed than I reply.

Looks fine to me.  It's fixing a bug.  I don't think the comment is even 
necessary--the rationale looks pretty obvious, and the code is clear.

Eric

>
> Regards,
>
> f
>
> [1] teaser for the curious:
> http://fperez.org/tmp/ipython_qt_pylab.png.  All code is in the
> 'newkernel' github branch.  Special credits to Evan Patterson from
> Enthought, the Qt brains behind the magic.
>
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Re: [matplotlib-devel] A small fix for backend specification...

2010-08-25 Thread Fernando Perez 
On Wed, Aug 25, 2010 at 2:59 PM, Gael Varoquaux
 wrote:
>
> Freeking awesome!
>
> Go go team!

Thanks :)  We're pretty happy, we'll post more in a few weeks when
there's something more solid to show.

Take care,

f

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Re: [matplotlib-devel] A small fix for backend specification...

2010-08-25 Thread Fernando Perez 
On Wed, Aug 25, 2010 at 3:06 PM, Eric Firing  wrote:
> Looks fine to me.  It's fixing a bug.  I don't think the comment is even
> necessary--the rationale looks pretty obvious, and the code is clear.
>

Great, thanks.  I'll shorten the comment to just one line then:
+# Lowercase only non-module backend names (modules are case-sensitive)

so that it serves as a little safety for the bug not to return, but is
less verbose than before.

Committed as revision 8657.

Thanks!

f

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Re: [matplotlib-devel] New Animation Class

2010-08-25 Thread Ryan May 
On Fri, Jul 9, 2010 at 7:27 PM, John Hunter  wrote:
> On Fri, Jul 9, 2010 at 5:22 PM, Ryan May  wrote:
>
>> I've been "hard" at work over the last couple of months putting
>> together a set of classes that simplifies the creation of animations
>> in matplotlib. This started when I resurrected some old code for
>
> Very nice -- people are going to really like this. I've had several
> requests personally to add something like this so thanks for doing it
> :-)

> * I am happy to see this pushed into trunk at any time.  I would not
> push it into the branch, but we can do a 1.1 trunk release as soon as
> we are ready (release early, release often).  Putting it in the trunk
> will facilitate testing and other developer contributions.  But if
> you'd rather leave it in github for a while, I have no problem with
> that either.

Since this has stalled 6 weeks with me not doing much with it, I went
ahead and checked it in. Hopefully I'll have an easier time doing
incremental development (especially ReST docs) with it in. There are
definitely still some things to clean up, especially in the area of
saving movies.

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma

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