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I am using Latex for text rendering in some matplotlib plots and I would like to use the Times rather than the Computer Modern fonts. I would also like to be able to edit the saved plot files with Adobe Illustrator when they are saved. The "Text rendering With LaTeX" web page (http://matplotlib.sourceforge.net/users/usetex.html?highlight=xpdf%20latex) says that to produce postscript text so that in can be edited in Adobe Illustrator I should set ps.usedistiller to xpdf in the rcparams. This I have done, but I get an error message "name 'xpdf' is not defined" when I run the program. Can anyone help?
I am running this on a MacBook Pro under OSX 10.6. I am using the the Enthought 6.3 distribution (which includes matplotlib 1.0). xpdf is installed on my machine and works.
Here is the code where I set the rc params
from matplotlib import rcParams
fig_width = 5.8 # width in inches
fig_height = 3.0 # height in inches
fig_size = (fig_width, fig_height)
params = {'backend': 'Agg',
 'axes.labelsize': 9,
 'axes.titlesize': 9,
 'legend.fontsize': 9,
 'xtick.labelsize': 6,
 'ytick.labelsize': 6,
 'figure.figsize': fig_size,
 'savefig.dpi' : 600,
 'ps.usedistiller' : xpdf,
 'text.usetex' : True,
 'font.family': 'sans-serif',
 'font.serif' : ['Times'],
 'axes.linewidth' : 0.5,
 'xtick.major.size' : 2,
 'ytick.major.size' : 2,
 'font.size' : 9}
rcParams.update(params)
Thanks to anyone who can help
David Pine

I am using Latex for text rendering in some matplotlib plots and I would like to use the Times rather than the Computer Modern fonts. I would also like to be able to edit the saved plot files with Adobe Illustrator when they are saved. The "Text rendering With LaTeX" web page (http://matplotlib.sourceforge.net/users/usetex.html?highlight=xpdf%20latex) says that to produce postscript text so that in can be edited in Adobe Illustrator I should set ps.usedistiller to xpdf in the rcparams. This I have done, but I get an error message "name 'xpdf' is not defined" when I run the program. Can anyone help?
I am running this on a MacBook Pro under OSX 10.6. I am using the the Enthought 6.3 distribution (which includes matplotlib 1.0). xpdf is installed on my machine and works.
Here is the code where I set the rc params
from matplotlib import rcParams
fig_width = 5.8 # width in inches
fig_height = 3.0 # height in inches
fig_size = (fig_width, fig_height)
params = {'backend': 'Agg',
 'axes.labelsize': 9,
 'axes.titlesize': 9,
 'legend.fontsize': 9,
 'xtick.labelsize': 6,
 'ytick.labelsize': 6,
 'figure.figsize': fig_size,
 'savefig.dpi' : 600,
 'ps.usedistiller' : xpdf,
 'text.usetex' : True,
 'font.family': 'sans-serif',
 'font.serif' : ['Times'],
 'axes.linewidth' : 0.5,
 'xtick.major.size' : 2,
 'ytick.major.size' : 2,
 'font.size' : 9}
rcParams.update(params)
Thanks to anyone who can help
David Pine

On Tue, Nov 23, 2010 at 10:22 AM, Alejandro Weinstein
<ale...@gm...> wrote:
>
> Hi:
>
> I want to use the symbol corresponding to a marker in a text
> annotation. Something like
>
> textstr = 'This is the square marker: ?'
> ax.text(0.05, 0.95, textstr)
>
> Is there something I can place where the question mark is above to get
> the actual square (or any other of the symbols you can use as a
> marker)?
>
> This is similar to what the legend command does, but I need more flexibility.
>
> Alejandro.
>
As I have learnt from Michael Droettboom, you can simply use unicode
characters with a supported font set:
In my setup I prefer DejaVu-Sans. First install these fonts into your
system, then edit your matplotlibrc
font.family : sans-serif
font.sans-serif : DejaVu Sans
or alternatively using your favorite unicode font.
then try this example (suggest using a unicode supported text editor
(e.g., vim)):
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt
plt.plot(range(100))
plt.text(0.05, 0.95, u"This is the square marker: □しろいしかく", fontsize=20)
plt.show()
Unicode characters are great for putting units, but it is not easy to
construct complex equations. Does anyone know if there is
sub/super-script range alphabet (not only numbers) supported unicode
font set?
--
Gökhan

Hi:
I want to use the symbol corresponding to a marker in a text
annotation. Something like
textstr = 'This is the square marker: ?'
ax.text(0.05, 0.95, textstr)
Is there something I can place where the question mark is above to get
the actual square (or any other of the symbols you can use as a
marker)?
This is similar to what the legend command does, but I need more flexibility.
Alejandro.

Thanks for the reply!
Do you know what makes X climb? And can you control its on some way?
// Tim
> From: jd...@gm...
> Date: 2010年11月17日 05:55:04 -0600
> Subject: Re: [Matplotlib-users] Formatter dates
> To: qw...@ho...
> CC: mat...@li...
> 
> On Wed, Nov 17, 2010 at 2:29 AM, Tim Åberg <qw...@ho...> wrote:
> > Hello!
> >
> > I have now been tampering with a custom formatter and the more i think about
> > it the more i feel there must be a more easy soulution. I have a set of
> > values that are plotted over time (i use date2num, to get the conversion
> > from date to num), i also have a list with dates that corresponds to these
> > values;
> > ['2010-11-05 10:27:45.605000', '2010-11-05 10:27:50.576000', '2010-11-05
> > 10:27:55.913000'], this to not have to do a conversion back, i imagine its
> > the most effective way to do it.
> >
> > Now to the question;
> >
> > The only two values in the datelist that is vital is the first and the last,
> > in between i really just want to have values that corresponds lineary. Thats
> > brings me to resoulution, if the values are far far in between, say weeks or
> > even moth the time (h:s:ms) isnt so important and vice versa.
> >
> > Is there any formatter that do this sort of things? eg. takes in two
> > values(dates) and format it by itself.
> 
> Take a look at this example
> 
> http://matplotlib.sourceforge.net/examples/api/date_index_formatter.html
> 
> It's trying to solve a different but related problem: in financial
> time series you only have data on Monday - Friday, and you don't want
> to plot the gaps on weekends. So you plot the data linearly with an
> index, and use a custom locator and formatter to set and format the
> ticks.
> 
> JDH
 		 	 		 

On 11/16/2010 07:41 PM, Stan West wrote:
> I believe I see how you could do it. The errorbar call returns the tuple p =
> (plotline, caplines, barlinecols) [1], and to update the errorbars, you must
> modify the objects in the caplines and barlinecols lists. Each element of the
> caplines list is a Line2D artist [2] for the left, right, top, or bottom caps;
> you can use its methods set_data, set_xdata, or set_ydata to modify its
> coordinates, as you did for the main line. Each element of the barlinecols
> list is a LineCollection [3] artist responsible for all of the x or y
> errorbars; you can use the set_segments method to provide new coordinates.
>
> [1]
> http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.Axes.errorbar
> [2]
> http://matplotlib.sourceforge.net/api/artist_api.html#matplotlib.lines.Line2D
> [3]
> http://matplotlib.sourceforge.net/api/collections_api.html#matplotlib.collections.LineCollection
> 
Thanks Stan,
with your suggestion I was able to solve the problem, even if it is not 
immediate (but not too long). This is what I did:
plotline, caplines, barlinecols = plt.errorbar(x, y, yerr, xerr)
# Now move the line
y = y/2.
# Replot the data first
plotline.set_data(x,y)
# Find the ending points of the errorbars
error_positions = (x-xerr,y), (x+xerr,y), (x,y-yerr), (x,y+yerr)
# Update the caplines
for i,pos in enumerate(error_positions):
 caplines[i].set_data(pos)
# Update the error bars
barlinecols[0].set_segments(zip(zip(x-xerr,y), zip(x+xerr,y)))
barlinecols[1].set_segments(zip(zip(x,y-yerr), zip(x,y+yerr)))
The last lines are a little clumsy, but I could not find a better way. 
Anyway, it could be nice to have a method like set_errorbar(x, y, yerr, 
xerr) to do the job.
Many thanks again
Gianfranco
-- 
Istituto Nazionale di Ricerca Metrologica (I.N.Ri.M)
(former Istituto Elettrotecnico Nazionale Galileo Ferraris)
Strada delle Cacce, 91 - 10135 Torino Italy
tel: ++39 011 3919839 fax: ++39 011 3919834
Personal home page: http://www.inrim.it/~durin/
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