Re: [matplotlib-devel] [Matplotlib-users] Notes on switching backends to qt4 on mac os x

2007-02-07 Thread Rob Hetland

The patch works.  Thanks.  Two more things:

1 - the icons look very small in the toolbar buttons (they look  
bigger in TkAgg).  Is there a fix for this?

2 - the subplot configure toolbar (where you get a pop-up window that  
lets you modify the axis size and position) does not work.  In  
particular, the sliders do not appear, although everything else seems  
to work (clicking in the empty window does modify the axis)

These two fixes are beyond my skill set, but I'll help where I can..

-r

On Feb 7, 2007, at 8:58 AM, Darren Dale wrote:

 Hi Rob,

 On Wednesday 07 February 2007 09:06:42 am Rob Hetland wrote:
 Developers:  Finally, I had to make some small changes to the qt4
 backend so that things worked right.  One is an essential change --
 the latin1() method no longer exists in the newer qt.  The other is a
 cosmetic change so that I can see the cursor position in the toolbar
 better.  Diff below.

 Thanks for the notes, and for the patch. I moved the margin  
 adjustment you
 suggested into a class attribute of NavigationToolbar2QT. This way,
 FigureManagerQT can get that information, which is needed to  
 properly set the
 height of the figure window. (figsize=(6,4) should yield a 6x4  
 plotting
 area, the height of the entire window is larger than 4 to  
 accommodate the
 toolbar.) Changes in svn 3004.

 Darren


Rob Hetland, Associate Professor
Dept. of Oceanography, Texas AM University
http://pong.tamu.edu/~rob
phone: 979-458-0096, fax: 979-845-6331



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Re: [matplotlib-devel] [Matplotlib-users] Notes on switching backends to qt4 on mac os x

2007-02-07 Thread Darren Dale
On Wednesday 07 February 2007 10:12:36 am Rob Hetland wrote:
 The patch works.  Thanks.  Two more things:

 1 - the icons look very small in the toolbar buttons (they look
 bigger in TkAgg).  Is there a fix for this?

I'm not sure. I'll look into it when I get a chance.

 2 - the subplot configure toolbar (where you get a pop-up window that
 lets you modify the axis size and position) does not work.  In
 particular, the sliders do not appear, although everything else seems
 to work (clicking in the empty window does modify the axis)

This is a known bug. We looked into it a while back, and couldn't make any 
headway.

Darren

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Re: [matplotlib-devel] [Matplotlib-users] Notes on switching backends to qt4 on mac os x

2007-02-07 Thread Darren Dale
Hi Rob,

On Wednesday 07 February 2007 09:06:42 am Rob Hetland wrote:
 Developers:  Finally, I had to make some small changes to the qt4
 backend so that things worked right.  One is an essential change --
 the latin1() method no longer exists in the newer qt.  The other is a
 cosmetic change so that I can see the cursor position in the toolbar
 better.  Diff below.

Thanks for the notes, and for the patch. I moved the margin adjustment you 
suggested into a class attribute of NavigationToolbar2QT. This way, 
FigureManagerQT can get that information, which is needed to properly set the 
height of the figure window. (figsize=(6,4) should yield a 6x4 plotting 
area, the height of the entire window is larger than 4 to accommodate the 
toolbar.) Changes in svn 3004.

Darren

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Re: [matplotlib-devel] [Matplotlib-users] ANN: matplotlib-0.90.0

2007-02-07 Thread Christopher Barker
Werner F. Bruhin wrote:
 Great to see a new release, will put some time aside to test it with 
 wxPython early next week.

looking forward to your reports.

 which versions of wxPython are supported?

I haven't tried the new one, but the last release worked well with 
wxPython2.6.3, but had some issues with 2.8.* -- I don't think anyone 
has addressed those yet.

 Well, we haven't built any binaries yet.  We pushed a source release
 fast to try to get it into Feisty.  Sorry Chris!

well, I've been chattering on about this for awhile, but haven't 
contributed anything yet...

  With wx2.8 out now
 and this being a major release, we definitely need to rethink wx
 builds.  We stuck with unicode for 0.87 to avoid confusion.  I would
 be happy to hear what wx users think/want.

I think it's time to just all unicode, all the way, but I mostly deal 
with English anyway.

 For me the ideal would be not to be depended on a particular release of 
 wxPython - big surprise no :-)

That would be nice.

 If I understand it correctly the dependency came in for performance 
 optimization, does 2.8 change something for this.

Perhaps. 2.8 has methods for directly setting the data in wxBitmaps. 
Before that, you needed to create a wxImage, then convert that to a bitmap.

However, to do that right, you'd need to be able to get the Agg bitmap 
as a Python buffer object that is in the binary form required by the 
platform. I think the majors need RGB and/or RGBA, but I'm not totally 
sure about that (maybe OS-X is ARGB?)

 - If yes, I would not see a problem with 0.9 requiring as a minimum 
 2.8.0.1 but going forward I could use any 2.8.x or newer release.

That would be a good way to go, or have fallback on the older methods 
for less than 2.8 -- so instead of saying you need 2.8 to use the wx 
backend we can say: you'll get better performance with wx if you use  
2.8

 - If no, then I guess we have to live with having a fixed dependency, 
 e.g. 0.87 is wxPython 2.6.x, 0.90 is wxPython 2.8.x, but it should 
 through at least a warning if one tries to use it with another wxPython 
 release.

Yes, it should. I've also started a patch for the build system that 
tries harder to make sure that you are building against the same wx that 
you are running -- that will at least help people built it themselves 
more easily.

NOTE: I took a look at the wx backend code a while ago, and it looks 
like even without the new Bitmap handlers in 2.8, it could be faster 
with straight Python code. Key is that a wxImage can be created from a 
Python buffer object without copying the data. So if we can expose the 
Agg buffer as a Python buffer, as RGB, then we should be able to get 
decent performance with pure python. You'd still need to do the 
wxBitmapFromImage thing, but the accelerated back-end does that too.

Look for a thread on this list a while back, with my and Ken's name on it.

-Chris



-- 
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/ORR(206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115   (206) 526-6317   main reception

[EMAIL PROTECTED]

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Re: [matplotlib-devel] [Matplotlib-users] Notes on switching backends to qt4 on mac os x

2007-02-07 Thread Rob Hetland

The MPL Qt backend requires PyQt (or, better, Qt4 and PyQt4).  PyQt  
does compile against the Qt Library, and also takes quite a while to  
complete.  PyQt does not use setuptools, and I am not sure how to  
make a generally usable binary distribution from it.

I would say that installation is quite easy (although time consuming)  
-- perhaps just a good set of directions on the MPL site?

-Rob

On Feb 7, 2007, at 10:01 AM, Christopher Barker wrote:

 Thanks for doing this Rob, its nice to get as much support on OS-X as
 possible.

 Does the QT back-end need to be compiled against QT? or is it  
 python-only?

 QT4 takes *forever* to compile, but it seems to compile easier now
 than previous versions that needed a small library hack.  The default
 configuration compiles and installs fine.  The other tools (PyQt4 and
 SIP) also compile and install painlessly with the default  
 configuration.

 Any chance you could package it up an submit it to the pythonmac  
 archive?

 Does it support a Universal build?

 -Chris


 -- 
 Christopher Barker, Ph.D.
 Oceanographer

 Emergency Response Division
 NOAA/NOS/ORR(206) 526-6959   voice
 7600 Sand Point Way NE   (206) 526-6329   fax
 Seattle, WA  98115   (206) 526-6317   main reception

 [EMAIL PROTECTED]

 -- 
 ---
 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? 
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Dept. of Oceanography, Texas AM University
http://pong.tamu.edu/~rob
phone: 979-458-0096, fax: 979-845-6331



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Re: [matplotlib-devel] [Matplotlib-users] Notes on switching backends to qt4 on mac os x

2007-02-07 Thread Darren Dale
On Wednesday 07 February 2007 12:09:18 pm Rob Hetland wrote:
 The MPL Qt backend requires PyQt (or, better, Qt4 and PyQt4).  PyQt
 does compile against the Qt Library, and also takes quite a while to
 complete.  PyQt does not use setuptools, and I am not sure how to
 make a generally usable binary distribution from it.

 I would say that installation is quite easy (although time consuming)
 -- perhaps just a good set of directions on the MPL site?

 -Rob

 On Feb 7, 2007, at 10:01 AM, Christopher Barker wrote:
  Thanks for doing this Rob, its nice to get as much support on OS-X as
  possible.
 
  Does the QT back-end need to be compiled against QT? or is it
  python-only?

The Qt backend is pure python. 

Darren

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