matplotlib-users

[Matplotlib-users] axes control

[Humufr <hu...@ya...>]

          Hello,

I would like to know how can I change the axes properties for the font 
of the tick label. I was trying to use something like:

xticklabels = get(gca(), 'xticklabels')
set(xticklabels, 'fontweight', 'bold')

and that's work for some parameter (fontweight for example) but it's not 
possible to choose some others like the font type or the angle.

Another things I saw in the website, a lot of links are not working 
(example: http://matplotlib.sourceforge.net/figure.html#Axis )


Thanks,


       Nicolas

Re: [Matplotlib-users] axes control

[John H. <jdh...@ac...>]

>>>>> "Humufr" == Humufr  <hu...@ya...> writes:

    Humufr>           Hello, I would like to know how can I change the
    Humufr> axes properties for the font of the tick label. I was
    Humufr> trying to use something like:

    Humufr> xticklabels = get(gca(), 'xticklabels') set(xticklabels,
    Humufr> 'fontweight', 'bold')

    Humufr> and that's work for some parameter (fontweight for
    Humufr> example) but it's not possible to choose some others like
    Humufr> the font type or the angle.

You need to pick the right property names: rotation rather than angle,
fontname or family for the fontname or family

    from matplotlib.matlab import *

    plot([1,2,3])
    labels = get(gca(), 'xticklabels')
    set(labels, fontweight='bold', rotation=45, fontname='cmr10')

    show()

You may want to read http://matplotlib.sourceforge.net/fonts.html and
the fonts section in the rc file to decide if you want to use the
family or fontname property.

I think one of the reasons you may be having problem with the fontname
is that matplotlib appears to fail silently when you specify a font
that it doesn't find.  In this case, it falls back on a known font.
We hope to add a verbose feature so you can get some diagnostic
information about what the font finder is doing.

    Humufr> Another things I saw in the website, a lot of links are
    Humufr> not working (example:
    Humufr> http://matplotlib.sourceforge.net/figure.html#Axis\ )

That should be
http://matplotlib.sourceforge.net/matplotlib.figure.html#Axis. 

I fixed this (in my local copy).  Let me know if you find some more.

JDH

Re: [Matplotlib-users] axes control

[Humufr <hu...@ya...>]

John Hunter wrote:

>>>>>>"Humufr" == Humufr  <hu...@ya...> writes:
>>>>>>            
>>>>>>
>
>    Humufr>           Hello, I would like to know how can I change the
>    Humufr> axes properties for the font of the tick label. I was
>    Humufr> trying to use something like:
>
>    Humufr> xticklabels = get(gca(), 'xticklabels') set(xticklabels,
>    Humufr> 'fontweight', 'bold')
>
>    Humufr> and that's work for some parameter (fontweight for
>    Humufr> example) but it's not possible to choose some others like
>    Humufr> the font type or the angle.
>
>You need to pick the right property names: rotation rather than angle,
>fontname or family for the fontname or family
>
>    from matplotlib.matlab import *
>
>    plot([1,2,3])
>    labels = get(gca(), 'xticklabels')
>    set(labels, fontweight='bold', rotation=45, fontname='cmr10')
>
>    show()
>
>You may want to read http://matplotlib.sourceforge.net/fonts.html and
>the fonts section in the rc file to decide if you want to use the
>family or fontname property.
>
>I think one of the reasons you may be having problem with the fontname
>is that matplotlib appears to fail silently when you specify a font
>that it doesn't find.  In this case, it falls back on a known font.
>We hope to add a verbose feature so you can get some diagnostic
>information about what the font finder is doing.
>

Hi,

Thanks for your answer, I have been able to change the font but the 
things I don't like, no that I think it's not coherent with other 
matplotlib command is that in the font you can't ask fontname=Courier" 
and fontstyle="Italic" (the term angle was bad in my precedent mail :) 
). That doesn't work.
Perhaps it's a problem with my installation (debian and package from 
this distribution and Suse and matplotlib install by hand) but I have an 
error message when I'm trying to have some Italic. I wa trying to use 
the script:

http://matplotlib.sourceforge.net/examples/fonts_demo.py

and I have this message when the script want plot the italic fonts:

Could not match cursive, normal, normal.  Returning 
/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf
Could not match fantasy, normal, normal.  Returning 
/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf
Could not match sans-serif, italic, normal.  Returning 
/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf
Could not match sans-serif, italic, normal.  Returning 
/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf
Could not match sans-serif, italic, normal.  Returning 
/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf

I defined the TTFPATH and I have no change.

I have something else weird with the fonts. I verified i=with Ipython and

from matplotlib.font_manager import fontManager, FontProperties
from matplotlib.matlab import *
p = FontProperties()
p.get_family()

the different fonts available. I obtain:

['Lucida Grande',
 'Verdana',
 'Geneva',
 'Lucida',
 'Bitstream Vera Sans',
 'Arial',
 'Helvetica',
 'sans-serif']

but if I'm trying to use the font Arial and italic in the script that 
give me this message:
 
Could not match sans-serif, italic, normal.  Returning 
/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf

It's seems that the change introduce in the script is not use and that 
matplotlib are using only Vera fonts with no style.




fonts = {
      'color'               : 'k',
      'fontname'            : 'Courier',
      'fontweight'          : 'bold',
      'fontstyle'           : 'italic',
      'fontsize'            : 'xx-large'
      }


ylabel('toto',fonts)

give me exactly the same things than:

fonts = {
      'color'               : 'k',
      'fontname'            : 'Arial,
      'fontweight'          : 'bold',
      'fontstyle'           : 'italic',
      'fontsize'            : 'xx-large'
      }


ylabel('toto',fonts)


The only things that seems to work is the fontweigth.

I have exactly the same things if I'm doing:

t = ylabel('label')
set(t,'fontstyle','italic')


I did probably something wrong but I can't find where so I'm asking for 
some help,

          Nicolas

Re: [Matplotlib-users] axes control

[John H. <jdh...@ac...>]

>>>>> "Humufr" == Humufr  <hu...@ya...> writes:

    Humufr> the different fonts available. I obtain:

    Humufr> ['Lucida Grande', 'Verdana', 'Geneva', 'Lucida',
    Humufr> 'Bitstream Vera Sans', 'Arial', 'Helvetica', 'sans-serif']

    Humufr> but if I'm trying to use the font Arial and italic in the
    Humufr> script that give me this message: Could not match
    Humufr> sans-serif, italic, normal.  Returning
    Humufr> /usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf

    Humufr> It's seems that the change introduce in the script is not
    Humufr> use and that matplotlib are using only Vera fonts with no
    Humufr> style.


Note that this list does not mean that these fonts are available on
your system.  They are simply the fonts that matplotlib will look for
if you specify sans-serif.


    Humufr> fonts = { 'color' : 'k', 'fontname' : 'Courier',
    Humufr> 'fontweight' : 'bold', 'fontstyle' : 'italic', 'fontsize'
    Humufr> : 'xx-large'
    Humufr>       }


    Humufr> ylabel('toto',fonts)

    Humufr> give me exactly the same things than:

    Humufr> fonts = { 'color' : 'k', 'fontname' : 'Arial, 'fontweight'
    Humufr> : 'bold', 'fontstyle' : 'italic', 'fontsize' : 'xx-large'
    Humufr>       }


Are you sure that you have Courier and Arial on your system and are
they in your TTFPATH?

If you are sure on both counts, it may help to remove your font cache
(typically  ~/.ttffont.cache on linux like systems) and let matplotlib
regenerate it's cache.  

Those are my only ideas so far, let me know.

JDH

Re: [Matplotlib-users] axes control

[Humufr <hu...@ya...>]

        Hi John,

this was the solution thanks. I was deleting the older .fonts.cache. I 
didn't notice the change, I'm apoligizing for the disturbance.

Thanks again,

       Nicolas


>Are you sure that you have Courier and Arial on your system and are
>they in your TTFPATH?
>
>If you are sure on both counts, it may help to remove your font cache
>(typically  ~/.ttffont.cache on linux like systems) and let matplotlib
>regenerate it's cache.  
>
>Those are my only ideas so far, let me know.
>
>JDH
>
>  
>