matplotlib-users Mailing List for matplotlib

On Thu, Jul 25, 2013 at 12:16 PM, Jeffrey Spencer <jef...@gm...>wrote:

> I want to use IPA vowel labels in my figures and to do that I need to load
> the package in latex \usepackage{tipa}. Is this possible as searching
> online besides using the new backend "pgf" I haven't seen how to manually
> select latex packages to load when using tex. Is this possible?
>

You can set the tex preample without using the "pgf" backend. Here's how
I'm setup:


impot matplotlib
matplotlib.rcParams['text.usetex']
Out[12]: True

matplotlib.rcParams['text.latex.preamble']
Out[13]:
['\\usepackage{siunitx}',
 '\\sisetup{detect-all}',
 '\\usepackage{helvet}',
 '\\usepackage{sansmath}',
 '\\sansmath']

I want to use IPA vowel labels in my figures and to do that I need to load
the package in latex \usepackage{tipa}. Is this possible as searching
online besides using the new backend "pgf" I haven't seen how to manually
select latex packages to load when using tex. Is this possible?

Also a side note is everytime when running ipython qtconsole and if I
select text.usetex = True in my .matplotlibrc or by running
rcParams.update() the kernal always seems to force a restart. It seems it
gets snagged in the external call to latex. It still works fine but a
message pops up constantly telling you the kernal needs to be restarted.

Chao,

plt.subplots returns a figure instance.  Can you use the add_subplot method of that figure instance to make your new axes?  If so, then I think that they should respond to the new requests for left/right/bottom/wspace space.

-Sterling

On Jul 25, 2013, at 10:06AM, Chao YUE wrote:

> Dear all,
> 
> First I make some subplots using the plt.subplots command,
> then I use mat.figure.Figure.delaxes to delete the axes, and add some small new ones
> in the same space by using mat.figure.Figure.add_axes, but I find after rendering the
> figure in the interative window, I cannot adjust the left/right/bottom/wspace etc in a
> interactive way, the old subplots that are generated using plt.subplots command will
> move, and the new ones generated using mat.figure.Figure.add_axes just don't
> move at all, so what should I do if I want the new ones also move? Because 
> the interative window is really useful when you want to have figures quickly.
> 
> thanks a lot for any hints.
> 
> cheers,
> 
> Chao
> 
> -- 
> ***********************************************************************************
> Chao YUE
> Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
> UMR 1572 CEA-CNRS-UVSQ
> Batiment 712 - Pe 119
> 91191 GIF Sur YVETTE Cedex
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Dear all,

First I make some subplots using the plt.subplots command,
then I use mat.figure.Figure.delaxes to delete the axes, and add some small
new ones
in the same space by using mat.figure.Figure.add_axes, but I find after
rendering the
figure in the interative window, I cannot adjust the
left/right/bottom/wspace etc in a
interactive way, the old subplots that are generated using plt.subplots
command will
move, and the new ones generated using mat.figure.Figure.add_axes just don't
move at all, so what should I do if I want the new ones also move? Because
the interative window is really useful when you want to have figures
quickly.

thanks a lot for any hints.

cheers,

Chao

-- 
***********************************************************************************
Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
************************************************************************************

Thanks for replying Ben , i am using Matplotlib v_1.2.1 (installed using
source) and am following embedding_in_gtk3.py, basic_anim.py and
simple_anim.py.

basically i am trying to merge  embedding_in_gtk3.py with simple_anim.py so
that i have an gtk3 Main window and inside it i am plotting continuous
graph.

I have done this using plt.show() function but at that time i was using
gtk2.0 so i couldn’t integrate the plot inside my gtk3 window. So when ever
i clicked plot button , it would pop off another window and start plot. (I
dont want this)

Thanks for the reply
Regards,
Gurinder Singh Gill


On Wed, Jul 24, 2013 at 7:15 PM, Benjamin Root <ben...@ou...> wrote:

>
>
>
> On Wed, Jul 24, 2013 at 3:09 AM, Gurinder Singh Gill <gsg...@gm...>wrote:
>
>> I am using python 2.7 and matplotlib animations example .
>> when i am using gtk2 as a reference the plots works fine
>> but when i change the backend to gtk3 i start getting errors .
>> can someone help with that
>> how to work with animations / blit in gtk3
>>
>>
> It would be helpful to know which version of matplotlib you are using,
> which example you are referring to (I can guess, but I would rather know
> for sure) and/or a minimal self-contained example that demonstrates the
> problem you are having.
>
> Cheers!
> Ben Root
>

Depending on the backend, you may be able to use
f = plt.figure()
f.canvas.flush_events()

Also, I would suggest to clear the image each time you go through the loop, otherwise you'll end up with a huge number of images on top of each other.

Best,
-Michiel.




________________________________
 From: zsero <zso...@gm...>
To: mat...@li... 
Sent: Thursday, July 25, 2013 12:05 AM
Subject: [Matplotlib-users] How to update matplotlib's imshow() window	interactively?
 


I'm working on some computer vision algorithm and I'd like to show how a numpy array changes in each step. What works now is that if I have a simple imshow( array ) at the end of my code, the window displays and shows the final image. However what I'd like to do is to update and display the imshow window as the image changes in each iteration. So for example I'd like to do: 
import numpy as np
import matplotlib.pyplot as plt
import time array = np.zeros( (100, 100), np.uint8 ) for i in xrange( 0, 100 ): for j in xrange( 0, 50 ): array[j, i] = 1 #_show_updated_window_briefly_ plt.imshow( array ) time.sleep(0.1)
The problem is that this way, the Matplotlib window doesn't get activated, only once the whole computation is finished. I've tried both native matplotlib and pyplot, but the results are the same. For plotting commands I found an .ion() switch, but here it doesn't seem to work. Q1. What is the best way to continuously display updates to a numpy array (actually a uint8 greyscale image)? Q2. Is it possible to do this with an animation function, like in the dynamic image example? I'd like to call a function inside a loop, thus I don't know how to achieve this with an animation function. 
________________________________
 View this message in context: How to update matplotlib's imshow() window interactively?
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