Re: [Matplotlib-users] removing paths inside polygon

2013-03-22 Thread Andrew Dawson
Thanks, the clipping is working now. But as you say the weird line width
issue still remains for Agg (and png, perhaps that uses Agg, I don't
know...). PDF output looks correct.


On 20 March 2013 05:48, Jae-Joon Lee lee.j.j...@gmail.com wrote:


 On Wed, Mar 13, 2013 at 2:17 AM, Andrew Dawson daw...@atm.ox.ac.ukwrote:

 You should see that the circle is no longer circular, and also there are
 weird line width issues. What I want it basically exactly like the attached
 without_clipping.png but with paths inside the circle removed.


 The reason that circle is no more circle is that simply inverting the
 vertices does not always results in a correctly inverted path.
 Instead of following line.

 interior.vertices = interior.vertices[::-1]

 You should use something like below.

 interior = mpath.Path(np.concatenate([interior.vertices[-2::-1],
   interior.vertices[-1:]]),
   interior.codes)

 It would be good if we have a method to invert a path.

 This will give you a circle. But the weird line width issue remains. This
 seems to be an Agg issue, and the line width seems to depend on the dpi.
 I guess @mdboom nay have some insight on this.

 Regards,

 -JJ




-- 
Dr Andrew Dawson
Atmospheric, Oceanic  Planetary Physics
Clarendon Laboratory
Parks Road
Oxford OX1 3PU, UK
Tel: +44 (0)1865 282438
Email: daw...@atm.ox.ac.uk
Web Site: http://www2.physics.ox.ac.uk/contacts/people/dawson
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[Matplotlib-users] PGF backend and logarithmic plots

2013-03-22 Thread kalle
 Hi,

 following problem arises when using the pgf backend:

 For the plots in my document I would like to use a sans-serif font. 
 Because I want to use the functionality of the Tex-package siunitx 
 (among others) I need to use either the pdf-backend with text.usetex set 
 to True or the pgf-backend. Because I like the idea of being able to use 
 virtually any font with XeLatex I'd prefer using the pgf-backend. 
 However, I cannot seem to be able to convince matplotlib to use a 
 sans-serif font for the tick-labels of my logarithmic axis. The weird 
 thing is, that there is no problem when using linear scales. My 
 (minimal) matplotlibrc looks like this:

 backend   : pdf
 font.family   : sans-serif
 pgf.preamble  : \usepackage{sfmath}

 An example script to reproduce the error:
 #!usr/bin/env python

 from pylab import *

 y = logspace(-3,9,num=50,base=10.0)

 fig = figure(1)
 clf()
 myplt = fig.add_subplot(111)
 myplt.plot(y)
 myplt.set_yscale('log')
 savefig('test.pdf')

 Has anyone had similar issues or does anyone have a good idea as to 
 what to look into? Any help would be greatly appreciated.

 Thanks in advance,

 Kalle

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Re: [Matplotlib-users] Squashed axes with AxesGrid

2013-03-22 Thread Sterling Smith
Steven,

Did you mean to switch back to AxesGrid?  I thought you said that it was fixed 
with Grid.

-Sterling

On Mar 22, 2013, at 9:30AM, Steven Boada wrote:

 Well... I jumped the gun. To better illustrate the problem(s) I am having, I 
 wrote a simple script that doesn't work...
 
 import pylab as pyl
 from mpl_toolkits.axes_grid1 import AxesGrid
 
 # make some data
 xdata = pyl.random(100) * 25.
 ydata = pyl.random(100) * 8.
 colordata = pyl.random(100) * 3.
 
 # make us a figure
 F = pyl.figure(1,figsize=(5.5,3.5))
 grid = AxesGrid(F, 111,
nrows_ncols=(1,2),
axes_pad = 0.1,
add_all=True,
share_all = True,
cbar_mode = 'each',
cbar_location = 'top')
 
 # Plot!
 sc1 = grid[0].scatter(xdata, ydata, c=colordata, s=50, cmap='spectral')
 sc2 = grid[1].scatter(xdata, ydata, c=colordata, s=50, cmap='spectral')
 
 # Add colorbars
 grid.cbar_axes[0].colorbar(sc1)
 grid.cbar_axes[1].colorbar(sc2)
 
 grid[0].set_xlim(0,25)
 grid[0].set_ylim(0,8)
 
 pyl.show()
 
 
 And you get some squashed figures... I'll attach a png.
 
 Thanks again.
 
 Steven
 
 On Fri Mar 22 10:49:44 2013, Steven Boada wrote:
 
 Thanks JJ!
 
 That did fix my problem, but I can't say I understand what the
 difference is. Why does Axesgrid make them squashed while just Grid
 works?
 
 
 On Thu Mar 21 22:28:34 2013, Jae-Joon Lee wrote:
 
 It is not clear what your problem is.
 AxesGrid implicitly assumes aspect=1 for each axes. So, I guess your
 y-limits are smaller (in its span) than x-limits.
 If you don't want this behavior, there is no need of using the
 AxesGrid. Rather use Grid, or simply subplots.
 
 import matplotlib.pyplot as plt
 from mpl_toolkits.axes_grid1 import Grid
 
 F = plt.figure(1,(5.5,3.5))
 grid = Grid(F, 111,
 nrows_ncols=(1,3),
 axes_pad = 0.1,
 add_all=True,
 label_mode = 'L',
 )
 
 If this is not the answer you're looking for, I recommend you to post
 a complete but simple script that reproduces your problem and describe
 the problem more explicitly.
 
 Regards,
 
 -JJ
 
 
 On Fri, Mar 22, 2013 at 6:03 AM, Steven Boada bo...@physics.tamu.edu
 mailto:bo...@physics.tamu.edu wrote:
 
 Heya List,
 
 See attached image for what I mean.
 
 Here is the grid creation bit. I can't seem to figure out what
 might be causing such a problem.
 
 F = pyl.figure(1,(5.5,3.5))
 grid = AxesGrid(F, 111,
 nrows_ncols=(1,3),
 axes_pad = 0.1,
 add_all=True,
 label_mode = 'L',
 aspect=True)
 
 Should be simple enough right?
 
 --
 
 Steven Boada
 
 Doctoral Student
 Dept of Physics and Astronomy
 Texas AM University
 bo...@physics.tamu.edu mailto:bo...@physics.tamu.edu
 
 
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 Matplotlib-users@lists.sourceforge.net
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 --
 
 Steven Boada
 
 Doctoral Student
 Dept of Physics and Astronomy
 Texas AM University
 bo...@physics.tamu.edu
 
 --
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 Make your web apps faster with AppDynamics
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 -- 
 
 Steven Boada
 
 Doctoral Student
 Dept of Physics and Astronomy
 Texas AM University
 bo...@physics.tamu.edu
 Screen Shot 2013-03-22 at 11.27.19 
 AM.png--
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Re: [Matplotlib-users] removing paths inside polygon

2013-03-22 Thread Michael Droettboom

See https://github.com/matplotlib/matplotlib/pull/1846

On 03/22/2013 11:17 AM, Michael Droettboom wrote:

It's puzzler.  I'm looking at it now.

Mike

On 03/22/2013 06:33 AM, Andrew Dawson wrote:
Thanks, the clipping is working now. But as you say the weird line 
width issue still remains for Agg (and png, perhaps that uses Agg, I 
don't know...). PDF output looks correct.



On 20 March 2013 05:48, Jae-Joon Lee lee.j.j...@gmail.com 
mailto:lee.j.j...@gmail.com wrote:



On Wed, Mar 13, 2013 at 2:17 AM, Andrew Dawson
daw...@atm.ox.ac.uk mailto:daw...@atm.ox.ac.uk wrote:

You should see that the circle is no longer circular, and
also there are weird line width issues. What I want it
basically exactly like the attached without_clipping.png but
with paths inside the circle removed.


The reason that circle is no more circle is that simply inverting
the vertices does not always results in a correctly inverted path.
Instead of following line.

interior.vertices = interior.vertices[::-1]

You should use something like below.

interior = mpath.Path(np.concatenate([interior.vertices[-2::-1],
interior.vertices[-1:]]),
interior.codes)

It would be good if we have a method to invert a path.

This will give you a circle. But the weird line width issue
remains. This seems to be an Agg issue, and the line width seems
to depend on the dpi.
I guess @mdboom nay have some insight on this.

Regards,

-JJ




--
Dr Andrew Dawson
Atmospheric, Oceanic  Planetary Physics
Clarendon Laboratory
Parks Road
Oxford OX1 3PU, UK
Tel: +44 (0)1865 282438
Email: daw...@atm.ox.ac.uk mailto:daw...@atm.ox.ac.uk
Web Site: http://www2.physics.ox.ac.uk/contacts/people/dawson


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Re: [Matplotlib-users] Squashed axes with AxesGrid

2013-03-22 Thread Steven Boada
Sorry y'all. I can see the confusion.

I started with AxesGrid -- squashed.

JJ suggested Grid and that fixes the scaling problems.

I realized that using just plain Grid doesn't give me the nice controls 
over the colorbars (which I would like to have), so I wrote a simple 
script and emailed it back out. That did include AxesGrid.

According to the manual ( 
http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axes-grid1 
)...

aspect
By default (False), widths and heights of axes in the grid are scaled 
independently. If True, they are scaled according to their data limits 
(similar to aspect parameter in mpl).

Which I read as it should scale the widths and heights should not be 
squashed. But what Ben is telling me (thanks for the explanation) is 
that isn't true. Seems like there is something simple I am just missing.

Sorry for that bit of confusion.

Steven

On Fri Mar 22 11:39:46 2013, Benjamin Root wrote:


 On Fri, Mar 22, 2013 at 12:30 PM, Steven Boada bo...@physics.tamu.edu
 mailto:bo...@physics.tamu.edu wrote:

 Well... I jumped the gun. To better illustrate the problem(s) I am
 having, I wrote a simple script that doesn't work...

 import pylab as pyl
 from mpl_toolkits.axes_grid1 import AxesGrid

 # make some data
 xdata = pyl.random(100) * 25.
 ydata = pyl.random(100) * 8.
 colordata = pyl.random(100) * 3.

 # make us a figure
 F = pyl.figure(1,figsize=(5.5,3.5)__)
 grid = AxesGrid(F, 111,
 nrows_ncols=(1,2),
 axes_pad = 0.1,
 add_all=True,
 share_all = True,
 cbar_mode = 'each',
 cbar_location = 'top')

 # Plot!
 sc1 = grid[0].scatter(xdata, ydata, c=colordata, s=50,
 cmap='spectral')
 sc2 = grid[1].scatter(xdata, ydata, c=colordata, s=50,
 cmap='spectral')

 # Add colorbars
 grid.cbar_axes[0].colorbar(__sc1)
 grid.cbar_axes[1].colorbar(__sc2)

 grid[0].set_xlim(0,25)
 grid[0].set_ylim(0,8)

 pyl.show()


 And you get some squashed figures... I'll attach a png.

 Thanks again.

 Steven


 You used AxesGrid again, not Grid.  AxesGrid implicitly applies an
 aspect='equal' to the subplots.  This means that a unit of distance on
 the x-axis takes the same amount of space as the same unit of distance
 on the y-axis.  In your example, the x axis goes from 0 to 25, while
 the y-axis goes from 0 to 8.  When aspect='equal', the y-axis will
 then be about a third the size of the x-axis, because the y-limits are
 about a third the size of the x-limits.

 Ben Root


--

Steven Boada

Doctoral Student
Dept of Physics and Astronomy
Texas AM University
bo...@physics.tamu.edu

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Re: [Matplotlib-users] Squashed axes with AxesGrid

2013-03-22 Thread Jody Klymak
...and did aspect=False not give you what you want?  

From what I can see 
http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axes-grid1

contradicts itself, and the chart is correct and the description below 
incorrect.

FWIW, I would expect the default to be False as well, but who am I to say?

Cheers,   Jody

On Mar 22, 2013, at  9:52 AM, Steven Boada bo...@physics.tamu.edu wrote:

 Sorry y'all. I can see the confusion.
 
 I started with AxesGrid -- squashed.
 
 JJ suggested Grid and that fixes the scaling problems.
 
 I realized that using just plain Grid doesn't give me the nice controls 
 over the colorbars (which I would like to have), so I wrote a simple 
 script and emailed it back out. That did include AxesGrid.
 
 According to the manual ( 
 http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axes-grid1 
 )...
 
 aspect
 By default (False), widths and heights of axes in the grid are scaled 
 independently. If True, they are scaled according to their data limits 
 (similar to aspect parameter in mpl).
 
 Which I read as it should scale the widths and heights should not be 
 squashed. But what Ben is telling me (thanks for the explanation) is 
 that isn't true. Seems like there is something simple I am just missing.
 
 Sorry for that bit of confusion.
 
 Steven
 
 On Fri Mar 22 11:39:46 2013, Benjamin Root wrote:
 
 
 On Fri, Mar 22, 2013 at 12:30 PM, Steven Boada bo...@physics.tamu.edu
 mailto:bo...@physics.tamu.edu wrote:
 
Well... I jumped the gun. To better illustrate the problem(s) I am
having, I wrote a simple script that doesn't work...
 
import pylab as pyl
from mpl_toolkits.axes_grid1 import AxesGrid
 
# make some data
xdata = pyl.random(100) * 25.
ydata = pyl.random(100) * 8.
colordata = pyl.random(100) * 3.
 
# make us a figure
F = pyl.figure(1,figsize=(5.5,3.5)__)
grid = AxesGrid(F, 111,
nrows_ncols=(1,2),
axes_pad = 0.1,
add_all=True,
share_all = True,
cbar_mode = 'each',
cbar_location = 'top')
 
# Plot!
sc1 = grid[0].scatter(xdata, ydata, c=colordata, s=50,
cmap='spectral')
sc2 = grid[1].scatter(xdata, ydata, c=colordata, s=50,
cmap='spectral')
 
# Add colorbars
grid.cbar_axes[0].colorbar(__sc1)
grid.cbar_axes[1].colorbar(__sc2)
 
grid[0].set_xlim(0,25)
grid[0].set_ylim(0,8)
 
pyl.show()
 
 
And you get some squashed figures... I'll attach a png.
 
Thanks again.
 
Steven
 
 
 You used AxesGrid again, not Grid.  AxesGrid implicitly applies an
 aspect='equal' to the subplots.  This means that a unit of distance on
 the x-axis takes the same amount of space as the same unit of distance
 on the y-axis.  In your example, the x axis goes from 0 to 25, while
 the y-axis goes from 0 to 8.  When aspect='equal', the y-axis will
 then be about a third the size of the x-axis, because the y-limits are
 about a third the size of the x-limits.
 
 Ben Root
 
 
 --
 
 Steven Boada
 
 Doctoral Student
 Dept of Physics and Astronomy
 Texas AM University
 bo...@physics.tamu.edu
 
 --
 Everyone hates slow websites. So do we.
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http://web.uvic.ca/~jklymak/





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Re: [Matplotlib-users] Squashed axes with AxesGrid

2013-03-22 Thread Steven Boada
Hey Jody et al.

Yeah aspect = False does the trick. Thanks for the help trouble 
shooting.

Steven

On Fri Mar 22 11:59:45 2013, Jody Klymak wrote:
 ...and did aspect=False not give you what you want?

  From what I can see 
 http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axes-grid1

 contradicts itself, and the chart is correct and the description below 
 incorrect.

 FWIW, I would expect the default to be False as well, but who am I to say?

 Cheers,   Jody

 On Mar 22, 2013, at  9:52 AM, Steven Boada bo...@physics.tamu.edu wrote:

 Sorry y'all. I can see the confusion.

 I started with AxesGrid -- squashed.

 JJ suggested Grid and that fixes the scaling problems.

 I realized that using just plain Grid doesn't give me the nice controls
 over the colorbars (which I would like to have), so I wrote a simple
 script and emailed it back out. That did include AxesGrid.

 According to the manual (
 http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axes-grid1
 )...

 aspect
 By default (False), widths and heights of axes in the grid are scaled
 independently. If True, they are scaled according to their data limits
 (similar to aspect parameter in mpl).

 Which I read as it should scale the widths and heights should not be
 squashed. But what Ben is telling me (thanks for the explanation) is
 that isn't true. Seems like there is something simple I am just missing.

 Sorry for that bit of confusion.

 Steven

 On Fri Mar 22 11:39:46 2013, Benjamin Root wrote:


 On Fri, Mar 22, 2013 at 12:30 PM, Steven Boada bo...@physics.tamu.edu
 mailto:bo...@physics.tamu.edu wrote:

 Well... I jumped the gun. To better illustrate the problem(s) I am
 having, I wrote a simple script that doesn't work...

 import pylab as pyl
 from mpl_toolkits.axes_grid1 import AxesGrid

 # make some data
 xdata = pyl.random(100) * 25.
 ydata = pyl.random(100) * 8.
 colordata = pyl.random(100) * 3.

 # make us a figure
 F = pyl.figure(1,figsize=(5.5,3.5)__)
 grid = AxesGrid(F, 111,
 nrows_ncols=(1,2),
 axes_pad = 0.1,
 add_all=True,
 share_all = True,
 cbar_mode = 'each',
 cbar_location = 'top')

 # Plot!
 sc1 = grid[0].scatter(xdata, ydata, c=colordata, s=50,
 cmap='spectral')
 sc2 = grid[1].scatter(xdata, ydata, c=colordata, s=50,
 cmap='spectral')

 # Add colorbars
 grid.cbar_axes[0].colorbar(__sc1)
 grid.cbar_axes[1].colorbar(__sc2)

 grid[0].set_xlim(0,25)
 grid[0].set_ylim(0,8)

 pyl.show()


 And you get some squashed figures... I'll attach a png.

 Thanks again.

 Steven


 You used AxesGrid again, not Grid.  AxesGrid implicitly applies an
 aspect='equal' to the subplots.  This means that a unit of distance on
 the x-axis takes the same amount of space as the same unit of distance
 on the y-axis.  In your example, the x axis goes from 0 to 25, while
 the y-axis goes from 0 to 8.  When aspect='equal', the y-axis will
 then be about a third the size of the x-axis, because the y-limits are
 about a third the size of the x-limits.

 Ben Root


 --

 Steven Boada

 Doctoral Student
 Dept of Physics and Astronomy
 Texas AM University
 bo...@physics.tamu.edu

 --
 Everyone hates slow websites. So do we.
 Make your web apps faster with AppDynamics
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 --
 Jody Klymak
 http://web.uvic.ca/~jklymak/





--

Steven Boada

Doctoral Student
Dept of Physics and Astronomy
Texas AM University
bo...@physics.tamu.edu

--
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