matplotlib-users Mailing List for matplotlib

So it turns out that

text.latex.preamble : '\usepackage{amsmath},\usepackage{amssymb}'

is not valid, but

text.latex.preamble : \usepackage{amsmath},\usepackage{amssymb}

is valid. Everything works fine now.

Regards,
-- Damon

--------------------------
Damon McDougall
Mathematics Institute
University of Warwick
Coventry
CV4 7AL
d.m...@wa...



On 2 Aug 2010, at 17:42, Damon McDougall wrote:

> Actually I'm wrong, the error says 'Missing \begin{document}'. Sorry for the spam.
> 
> Regards,
> -- Damon
> 
> --------------------------
> Damon McDougall
> Mathematics Institute
> University of Warwick
> Coventry
> CV4 7AL
> d.m...@wa...
> 
> 
> 
> On 2 Aug 2010, at 17:41, Damon McDougall wrote:
> 
>> After some playing I have discovered that putting maplotlib.rc('text.latex', preamble='\usepackage{amsmath},\usepackage{amssymb}') fixes the issue of text rendering. However, when putting this value in the ~/.matplotlib/matplotlibrc file, I get the same error saying that \mathbb is undefined. Any ideas?
>> 
>> Regards,
>> -- Damon
>> 
>> --------------------------
>> Damon McDougall
>> Mathematics Institute
>> University of Warwick
>> Coventry
>> CV4 7AL
>> d.m...@wa...
>> 
>> 
>> 
>> On 2 Aug 2010, at 16:48, Damon McDougall wrote:
>> 
>>> Hi all,
>>> 
>>> So I'm generating a figure for a paper and I'd like to be able to use something akin to ax.set_ylabel('$\mathbb{TEST}$')
>>> 
>>> The weird thing is sometimes I get an error when running the figure generation script (attached) and sometimes I don't. I also can't reproduce when it does or doesn't give an error. In either case, the text doesn't render as blackboard bold text, it's just normal Computer Modern Roman text (see attached figure). Also see attached a python script that reproduces the figure.
>>> 
>>> <asd.pdf>
>>> 
>>> <script.py>
>>> 
>>> <error.txt>
>>> 
>>> Any help is greatly appreciated. Thank you.
>>> 
>>> Regards,
>>> -- Damon
>>> 
>>> --------------------------
>>> Damon McDougall
>>> Mathematics Institute
>>> University of Warwick
>>> Coventry
>>> CV4 7AL
>>> d.m...@wa...
>>> 
>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> The Palm PDK Hot Apps Program offers developers who use the
>>> Plug-In Development Kit to bring their C/C++ apps to Palm for a share
>>> of $1 Million in cash or HP Products. Visit us here for more details:
>>> http://p.sf.net/sfu/dev2dev-palm_______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>> 
> 
> 
> ------------------------------------------------------------------------------
> The Palm PDK Hot Apps Program offers developers who use the
> Plug-In Development Kit to bring their C/C++ apps to Palm for a share
> of $1 Million in cash or HP Products. Visit us here for more details:
> http://p.sf.net/sfu/dev2dev-palm
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Actually I'm wrong, the error says 'Missing \begin{document}'. Sorry for the spam.

Regards,
-- Damon

--------------------------
Damon McDougall
Mathematics Institute
University of Warwick
Coventry
CV4 7AL
d.m...@wa...



On 2 Aug 2010, at 17:41, Damon McDougall wrote:

> After some playing I have discovered that putting maplotlib.rc('text.latex', preamble='\usepackage{amsmath},\usepackage{amssymb}') fixes the issue of text rendering. However, when putting this value in the ~/.matplotlib/matplotlibrc file, I get the same error saying that \mathbb is undefined. Any ideas?
> 
> Regards,
> -- Damon
> 
> --------------------------
> Damon McDougall
> Mathematics Institute
> University of Warwick
> Coventry
> CV4 7AL
> d.m...@wa...
> 
> 
> 
> On 2 Aug 2010, at 16:48, Damon McDougall wrote:
> 
>> Hi all,
>> 
>> So I'm generating a figure for a paper and I'd like to be able to use something akin to ax.set_ylabel('$\mathbb{TEST}$')
>> 
>> The weird thing is sometimes I get an error when running the figure generation script (attached) and sometimes I don't. I also can't reproduce when it does or doesn't give an error. In either case, the text doesn't render as blackboard bold text, it's just normal Computer Modern Roman text (see attached figure). Also see attached a python script that reproduces the figure.
>> 
>> <asd.pdf>
>> 
>> <script.py>
>> 
>> <error.txt>
>> 
>> Any help is greatly appreciated. Thank you.
>> 
>> Regards,
>> -- Damon
>> 
>> --------------------------
>> Damon McDougall
>> Mathematics Institute
>> University of Warwick
>> Coventry
>> CV4 7AL
>> d.m...@wa...
>> 
>> 
>> 
>> ------------------------------------------------------------------------------
>> The Palm PDK Hot Apps Program offers developers who use the
>> Plug-In Development Kit to bring their C/C++ apps to Palm for a share
>> of $1 Million in cash or HP Products. Visit us here for more details:
>> http://p.sf.net/sfu/dev2dev-palm_______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 

After some playing I have discovered that putting maplotlib.rc('text.latex', preamble='\usepackage{amsmath},\usepackage{amssymb}') fixes the issue of text rendering. However, when putting this value in the ~/.matplotlib/matplotlibrc file, I get the same error saying that \mathbb is undefined. Any ideas?

Regards,
-- Damon

--------------------------
Damon McDougall
Mathematics Institute
University of Warwick
Coventry
CV4 7AL
d.m...@wa...



On 2 Aug 2010, at 16:48, Damon McDougall wrote:

> Hi all,
> 
> So I'm generating a figure for a paper and I'd like to be able to use something akin to ax.set_ylabel('$\mathbb{TEST}$')
> 
> The weird thing is sometimes I get an error when running the figure generation script (attached) and sometimes I don't. I also can't reproduce when it does or doesn't give an error. In either case, the text doesn't render as blackboard bold text, it's just normal Computer Modern Roman text (see attached figure). Also see attached a python script that reproduces the figure.
> 
> <asd.pdf>
> 
> <script.py>
> 
> <error.txt>
> 
> Any help is greatly appreciated. Thank you.
> 
> Regards,
> -- Damon
> 
> --------------------------
> Damon McDougall
> Mathematics Institute
> University of Warwick
> Coventry
> CV4 7AL
> d.m...@wa...
> 
> 
> 
> ------------------------------------------------------------------------------
> The Palm PDK Hot Apps Program offers developers who use the
> Plug-In Development Kit to bring their C/C++ apps to Palm for a share
> of $1 Million in cash or HP Products. Visit us here for more details:
> http://p.sf.net/sfu/dev2dev-palm_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hi all,

So I'm generating a figure for a paper and I'd like to be able to use something akin to ax.set_ylabel('$\mathbb{TEST}$')

The weird thing is sometimes I get an error when running the figure generation script (attached) and sometimes I don't. I also can't reproduce when it does or doesn't give an error. In either case, the text doesn't render as blackboard bold text, it's just normal Computer Modern Roman text (see attached figure). Also see attached a python script that reproduces the figure.

You could use

pylab.ylabel(r"Profit (\verb+$+)")

or use another font.

Eduardo


On 2 Aug 2010, at 15:50, Benjamin Root wrote:

> Hmmm, if I comment out the .savefig() and use the show(), I get no errors.  But I get the same key error if I try to save it as a pdf.  However, if I save it as a png, I get no problems.
> 
> Maybe it is a problem with the pdf backend?
> 
> Ben Root
> 
> On Mon, Aug 2, 2010 at 9:29 AM, Richard Lincoln <r.w...@gm...> wrote:
> On 2 August 2010 15:19, Darren Dale <dsd...@gm...> wrote:
> > On Mon, Aug 2, 2010 at 10:15 AM, Richard Lincoln <r.w...@gm...> wrote:
> >> I am having trouble creating a plot using TeX which has a $ sign in
> >> one of the axis labels.  If I run:
> >>
> >> import matplotlib
> >>
> >> matplotlib.rc('font', **{'family': 'serif', 'serif': ['Computer Modern Roman']})
> >> matplotlib.rc('text', usetex=True)
> >>
> >> import pylab
> >>
> >> pylab.figure()
> >> pylab.plot([0.0, 1.0])
> >> pylab.ylabel("Profit (\$)")
> >> pylab.savefig('/tmp/fig.pdf')
> >>
> >>
> >> I get the error:
> >
> > Try:
> >
> > pylab.ylabel(r"Profit (\$)")
> >
> 
> No luck.  Nor with:
> 
> matplotlib.rc('text.latex', unicode=True)
> pylab.ylabel(u"Profit (\$)")
> 

On Mon, Aug 2, 2010 at 2:15 AM, David Goldsmith <d.l...@gm...>wrote:

> On Sun, Aug 1, 2010 at 10:51 PM, David Goldsmith <d.l...@gm...>wrote:
>
>> Hi!  Is there a way to see data values when imaging an array, say, e.g.,
>> when holding the cursor over a point?
>>
>> DG
>>
>
> I found the data_browser.py example - how do I use it if I'm not using
> pylab.show, i.e., I'm using oo?
>
> DG
>


David,

Replace
"from pylab import figure, show" with "import matplotlib.pyplot as plt"
"fig = figure()" with "fig = plt.figure()"
"show()" with "plt.show()"

I believe that is all you need to do.

Ben Root

Hmmm, if I comment out the .savefig() and use the show(), I get no errors.
But I get the same key error if I try to save it as a pdf.  However, if I
save it as a png, I get no problems.

Maybe it is a problem with the pdf backend?

Ben Root

On Mon, Aug 2, 2010 at 9:29 AM, Richard Lincoln <r.w...@gm...>wrote:

> On 2 August 2010 15:19, Darren Dale <dsd...@gm...> wrote:
> > On Mon, Aug 2, 2010 at 10:15 AM, Richard Lincoln <r.w...@gm...>
> wrote:
> >> I am having trouble creating a plot using TeX which has a $ sign in
> >> one of the axis labels.  If I run:
> >>
> >> import matplotlib
> >>
> >> matplotlib.rc('font', **{'family': 'serif', 'serif': ['Computer Modern
> Roman']})
> >> matplotlib.rc('text', usetex=True)
> >>
> >> import pylab
> >>
> >> pylab.figure()
> >> pylab.plot([0.0, 1.0])
> >> pylab.ylabel("Profit (\$)")
> >> pylab.savefig('/tmp/fig.pdf')
> >>
> >>
> >> I get the error:
> >
> > Try:
> >
> > pylab.ylabel(r"Profit (\$)")
> >
>
> No luck.  Nor with:
>
> matplotlib.rc('text.latex', unicode=True)
> pylab.ylabel(u"Profit (\$)")
>
>
> ------------------------------------------------------------------------------
> The Palm PDK Hot Apps Program offers developers who use the
> Plug-In Development Kit to bring their C/C++ apps to Palm for a share
> of $1 Million in cash or HP Products. Visit us here for more details:
> http://p.sf.net/sfu/dev2dev-palm
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

On 2 August 2010 15:19, Darren Dale <dsd...@gm...> wrote:
> On Mon, Aug 2, 2010 at 10:15 AM, Richard Lincoln <r.w...@gm...> wrote:
>> I am having trouble creating a plot using TeX which has a $ sign in
>> one of the axis labels.  If I run:
>>
>> import matplotlib
>>
>> matplotlib.rc('font', **{'family': 'serif', 'serif': ['Computer Modern Roman']})
>> matplotlib.rc('text', usetex=True)
>>
>> import pylab
>>
>> pylab.figure()
>> pylab.plot([0.0, 1.0])
>> pylab.ylabel("Profit (\$)")
>> pylab.savefig('/tmp/fig.pdf')
>>
>>
>> I get the error:
>
> Try:
>
> pylab.ylabel(r"Profit (\$)")
>

No luck.  Nor with:

matplotlib.rc('text.latex', unicode=True)
pylab.ylabel(u"Profit (\$)")

On Mon, Aug 2, 2010 at 10:15 AM, Richard Lincoln <r.w...@gm...> wrote:
> I am having trouble creating a plot using TeX which has a $ sign in
> one of the axis labels.  If I run:
>
> import matplotlib
>
> matplotlib.rc('font', **{'family': 'serif', 'serif': ['Computer Modern Roman']})
> matplotlib.rc('text', usetex=True)
>
> import pylab
>
> pylab.figure()
> pylab.plot([0.0, 1.0])
> pylab.ylabel("Profit (\$)")
> pylab.savefig('/tmp/fig.pdf')
>
>
> I get the error:

Try:

pylab.ylabel(r"Profit (\$)")

I am having trouble creating a plot using TeX which has a $ sign in
one of the axis labels.  If I run:

import matplotlib

matplotlib.rc('font', **{'family': 'serif', 'serif': ['Computer Modern Roman']})
matplotlib.rc('text', usetex=True)

import pylab

pylab.figure()
pylab.plot([0.0, 1.0])
pylab.ylabel("Profit (\$)")
pylab.savefig('/tmp/fig.pdf')


I get the error:

Traceback (most recent call last):
  File "/home/rwl/python/aes/Pylon/examples/pyreto/thesis/plot_tex.py",
line 12, in <module>
    pylab.savefig('/tmp/fig.pdf')
  File "/usr/lib/pymodules/python2.5/matplotlib/pyplot.py", line 356, in savefig
    return fig.savefig(*args, **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/figure.py", line 1032,
in savefig
    self.canvas.print_figure(*args, **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/backend_bases.py",
line 1476, in print_figure
    **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/backend_bases.py",
line 1334, in print_pdf
    return pdf.print_pdf(*args, **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_pdf.py",
line 2031, in print_pdf
    self.figure.draw(renderer)
  File "/usr/lib/pymodules/python2.5/matplotlib/artist.py", line 46,
in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/figure.py", line 773, in draw
    for a in self.axes: a.draw(renderer)
  File "/usr/lib/pymodules/python2.5/matplotlib/artist.py", line 46,
in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/axes.py", line 1735, in draw
    a.draw(renderer)
  File "/usr/lib/pymodules/python2.5/matplotlib/artist.py", line 46,
in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/usr/lib/pymodules/python2.5/matplotlib/axis.py", line 757, in draw
    self.label.draw(renderer)
  File "/usr/lib/pymodules/python2.5/matplotlib/text.py", line 556, in draw
    self._fontproperties, angle)
  File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_pdf.py",
line 1437, in draw_tex
    psfont = self.tex_font_mapping(dvifont.texname)
  File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_pdf.py",
line 1269, in tex_font_mapping
    return self.tex_font_map[texfont]
  File "/usr/lib/pymodules/python2.5/matplotlib/dviread.py", line 673,
in __getitem__
    result = self._font[texname]
KeyError: 'tcrm1200'


I am using Debian/unstable and have the latest texlive installed.  Can
anyone tell me what the problem might be?

Richard

On Sun, Aug 1, 2010 at 10:51 PM, David Goldsmith <d.l...@gm...>wrote:

> Hi!  Is there a way to see data values when imaging an array, say, e.g.,
> when holding the cursor over a point?
>
> DG
>

I found the data_browser.py example - how do I use it if I'm not using
pylab.show, i.e., I'm using oo?

DG

Hi!  Is there a way to see data values when imaging an array, say, e.g.,
when holding the cursor over a point?

DG