[matplotlib-devel] Exploring

2010-07-30 Thread Damon McDougall 
Hi,

I'm interested in fiddling around with the matplotlib source. Let's say we set 
up various things:

from matplotlib.figure import Figure()
from matplotlib.backends.backend_pdf import FigureCanvasPdf as FigureCanvas

fig = Figure()
canvas = FigureCanvas(fig)
ax = fig.add_subplot(1, 1, 1)
fig.savefig('asd.pdf', bbox_inches='tight')

I would like to know what exactly happens when bbox_inches='tight' is passed to 
savefig(). I've been searching in the figure.py source and nowhere can I see 
the bbox_inches='tight' keyword being tested for in the savefig() method. 
Having said that, all of the kwargs do get passed on to the 
canvas.print_figure() method, so I looked in the backend_pdf.py file but 
couldn't find a print_figure() method. Could someone point me in the right 
direction?

Regards,
-- Damon

--
Damon McDougall
Mathematics Institute
University of Warwick
Coventry
CV4 7AL
d.mcdoug...@warwick.ac.uk




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Re: [matplotlib-devel] Exploring

2010-07-30 Thread Benjamin Root 
On Fri, Jul 30, 2010 at 9:54 AM, Damon McDougall
d.mcdoug...@warwick.ac.ukwrote:

 Hi,

 I'm interested in fiddling around with the matplotlib source. Let's say we
 set up various things:

 from matplotlib.figure import Figure()
 from matplotlib.backends.backend_pdf import FigureCanvasPdf as FigureCanvas

 fig = Figure()
 canvas = FigureCanvas(fig)
 ax = fig.add_subplot(1, 1, 1)
 fig.savefig('asd.pdf', bbox_inches='tight')

 I would like to know what exactly happens when bbox_inches='tight' is
 passed to savefig(). I've been searching in the figure.py source and nowhere
 can I see the bbox_inches='tight' keyword being tested for in the savefig()
 method. Having said that, all of the kwargs do get passed on to the
 canvas.print_figure() method, so I looked in the backend_pdf.py file but
 couldn't find a print_figure() method. Could someone point me in the right
 direction?

 Regards,
 -- Damon


That is because the FigureCanvasPdf class inherits from the
FigureCanvasBase, which defines the .savefig() function.  You will find that
in backend_bases.py.

I hope this helps,
Ben Root
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Re: [matplotlib-devel] Exploring

2010-07-30 Thread Tony S Yu 

On Jul 30, 2010, at 10:54 AM, Damon McDougall wrote:

 Hi,
 
 I'm interested in fiddling around with the matplotlib source. Let's say we 
 set up various things:
 
 from matplotlib.figure import Figure()
 from matplotlib.backends.backend_pdf import FigureCanvasPdf as FigureCanvas
 
 fig = Figure()
 canvas = FigureCanvas(fig)
 ax = fig.add_subplot(1, 1, 1)
 fig.savefig('asd.pdf', bbox_inches='tight')
 
 I would like to know what exactly happens when bbox_inches='tight' is passed 
 to savefig(). I've been searching in the figure.py source and nowhere can I 
 see the bbox_inches='tight' keyword being tested for in the savefig() method. 
 Having said that, all of the kwargs do get passed on to the 
 canvas.print_figure() method, so I looked in the backend_pdf.py file but 
 couldn't find a print_figure() method. Could someone point me in the right 
 direction?
 
 Regards,
 -- Damon

That's funny: I was just looking at bbox_inches='tight' recently. You'll find 
the relevant section in matplotlib.backend_bases.print_figure.

Best,
-Tony


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Re: [matplotlib-devel] Exploring

2010-07-30 Thread Damon McDougall 
Hmm, it seems as though tick labels get clipped on the top and on the right 
when passing bbox_inches='tight' and pad_inches=0.0. I wouldn't expect this 
behaviour. Is there perhaps a bug in Bbox.union that's causing this?

Regards,
-- Damon

--
Damon McDougall
Mathematics Institute
University of Warwick
Coventry
CV4 7AL
d.mcdoug...@warwick.ac.uk



On 30 Jul 2010, at 16:03, Tony S Yu wrote:

 
 On Jul 30, 2010, at 10:54 AM, Damon McDougall wrote:
 
 Hi,
 
 I'm interested in fiddling around with the matplotlib source. Let's say we 
 set up various things:
 
 from matplotlib.figure import Figure()
 from matplotlib.backends.backend_pdf import FigureCanvasPdf as FigureCanvas
 
 fig = Figure()
 canvas = FigureCanvas(fig)
 ax = fig.add_subplot(1, 1, 1)
 fig.savefig('asd.pdf', bbox_inches='tight')
 
 I would like to know what exactly happens when bbox_inches='tight' is passed 
 to savefig(). I've been searching in the figure.py source and nowhere can I 
 see the bbox_inches='tight' keyword being tested for in the savefig() 
 method. Having said that, all of the kwargs do get passed on to the 
 canvas.print_figure() method, so I looked in the backend_pdf.py file but 
 couldn't find a print_figure() method. Could someone point me in the right 
 direction?
 
 Regards,
 -- Damon
 
 That's funny: I was just looking at bbox_inches='tight' recently. You'll find 
 the relevant section in matplotlib.backend_bases.print_figure.
 
 Best,
 -Tony
 


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Re: [matplotlib-devel] Exploring

2010-07-30 Thread Eric Firing 
On 07/30/2010 06:32 AM, Damon McDougall wrote:
 Hmm, it seems as though tick labels get clipped on the top and on the right 
 when passing bbox_inches='tight' and pad_inches=0.0. I wouldn't expect this 
 behaviour. Is there perhaps a bug in Bbox.union that's causing this?


Not likely.  Much more likely is a problem in calculating the rendered 
size of the text.

Eric

 Regards,
 -- Damon

 --
 Damon McDougall
 Mathematics Institute
 University of Warwick
 Coventry
 CV4 7AL
 d.mcdoug...@warwick.ac.uk



 On 30 Jul 2010, at 16:03, Tony S Yu wrote:


 On Jul 30, 2010, at 10:54 AM, Damon McDougall wrote:

 Hi,

 I'm interested in fiddling around with the matplotlib source. Let's say we 
 set up various things:

 from matplotlib.figure import Figure()
 from matplotlib.backends.backend_pdf import FigureCanvasPdf as FigureCanvas

 fig = Figure()
 canvas = FigureCanvas(fig)
 ax = fig.add_subplot(1, 1, 1)
 fig.savefig('asd.pdf', bbox_inches='tight')

 I would like to know what exactly happens when bbox_inches='tight' is 
 passed to savefig(). I've been searching in the figure.py source and 
 nowhere can I see the bbox_inches='tight' keyword being tested for in the 
 savefig() method. Having said that, all of the kwargs do get passed on to 
 the canvas.print_figure() method, so I looked in the backend_pdf.py file 
 but couldn't find a print_figure() method. Could someone point me in the 
 right direction?

 Regards,
 -- Damon

 That's funny: I was just looking at bbox_inches='tight' recently. You'll 
 find the relevant section in matplotlib.backend_bases.print_figure.

 Best,
 -Tony



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Re: [matplotlib-devel] Exploring

2010-07-30 Thread Jae-Joon Lee 
I don't think this is just an issue of bbox_inches option. For
example, if you create an axes of rect=[0,0,1,1] and save the figure
(w/o bbox_inches option), you will see a similar behavior.
Also, I believe that the result depends on the backends.

I think this kind of issue is quite difficult to resolve and I doubt
if this will be solved anytime soon.
Any contribution will be very much appreciated.

Regards,

-JJ




On Sat, Jul 31, 2010 at 5:48 AM, Damon McDougall
d.mcdoug...@warwick.ac.uk wrote:
 Aha! Even without the text, i.e. setting label1On = False for all the major 
 ticks, the behaviour I see is that with bbox_inches = 'tight' and pad_inches 
 = 0.0 I get the saved figure which includes the black border line for the 
 bottom and left edges, but not the top and right edges. This may have 
 something to do with it. Maybe it's an issue with the bounding box not being 
 'inclusive' and leaving out the end points?

 Regards,
 -- Damon

 --
 Damon McDougall
 Mathematics Institute
 University of Warwick
 Coventry
 CV4 7AL
 d.mcdoug...@warwick.ac.uk



 On 30 Jul 2010, at 20:33, Eric Firing wrote:

 On 07/30/2010 06:32 AM, Damon McDougall wrote:
 Hmm, it seems as though tick labels get clipped on the top and on the right 
 when passing bbox_inches='tight' and pad_inches=0.0. I wouldn't expect this 
 behaviour. Is there perhaps a bug in Bbox.union that's causing this?


 Not likely.  Much more likely is a problem in calculating the rendered
 size of the text.

 Eric

 Regards,
 -- Damon

 --
 Damon McDougall
 Mathematics Institute
 University of Warwick
 Coventry
 CV4 7AL
 d.mcdoug...@warwick.ac.uk



 On 30 Jul 2010, at 16:03, Tony S Yu wrote:


 On Jul 30, 2010, at 10:54 AM, Damon McDougall wrote:

 Hi,

 I'm interested in fiddling around with the matplotlib source. Let's say 
 we set up various things:

 from matplotlib.figure import Figure()
 from matplotlib.backends.backend_pdf import FigureCanvasPdf as 
 FigureCanvas

 fig = Figure()
 canvas = FigureCanvas(fig)
 ax = fig.add_subplot(1, 1, 1)
 fig.savefig('asd.pdf', bbox_inches='tight')

 I would like to know what exactly happens when bbox_inches='tight' is 
 passed to savefig(). I've been searching in the figure.py source and 
 nowhere can I see the bbox_inches='tight' keyword being tested for in the 
 savefig() method. Having said that, all of the kwargs do get passed on to 
 the canvas.print_figure() method, so I looked in the backend_pdf.py file 
 but couldn't find a print_figure() method. Could someone point me in the 
 right direction?

 Regards,
 -- Damon

 That's funny: I was just looking at bbox_inches='tight' recently. You'll 
 find the relevant section in matplotlib.backend_bases.print_figure.

 Best,
 -Tony



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