matplotlib-users

[Matplotlib-users] default mathtext font

[Eli B. <eb...@gm...>]

Hello
I there a way to change the default mathtext font from cal to rm ?
I would like to use the rm (serif) font without stating rm{...} or
mathrm{...}.
Is it possible to do using the matplotlibrc ?
can you give me an example of how this is done ?

Thanks
Eli

[Matplotlib-users] Basemap to KML polygon

[Lionel R. <lro...@li...>]

Hi all,
just to know if there's a proper way to convert a basemap generated with 
contourf to a KML (or polygon shapefile) ?
Thanks

-- 
Lionel Roubeyrie - lro...@li...
Chargé d'études et de maintenance
LIMAIR - la Surveillance de l'Air en Limousin
http://www.limair.asso.fr

Re: [Matplotlib-users] default mathtext font

[Michael D. <md...@st...>]

Unfortunately there isn't.  This is *theoretically* possible with the 
STIX fonts, but that hasn't been implemented.  However, with the 
Computer Modern fonts, many of the glyphs simply aren't present (upright 
Greek, for example) to make this happen.

That said, I'm not sure this is necessarily a good idea.  Math has a set 
of commonly accepted conventions about when to use italic vs. upright 
that may only confuse the reader when not followed.  Can you provide a 
use case?

Cheers,
Mike

Eli Brosh wrote:
> Hello
> I there a way to change the default mathtext font from cal to rm ?
> I would like to use the rm (serif) font without stating rm{...} or 
> mathrm{...}.
> Is it possible to do using the matplotlibrc ?
> can you give me an example of how this is done ?
>
> Thanks
> Eli
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
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> ------------------------------------------------------------------------
>
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>   

Re: [Matplotlib-users] default mathtext font

[Eli B. <eb...@gm...>]

Here is the use case I have in mind:
Plotting properties of various phases of iron, I need a legend with greek
letters and normal text:
\alpha-Fe, Someone (2003)

Now, I need the names e.g. someone to be upright.
Also, the relbar between \alpha and Fe is shorter with normal text fonts
than with italics.

I can solve the problem by using r'\rm{\alpha-Fe, Someone (2003)}' but it
would be easier if I could just change the defaults.

Eli


On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom <md...@st...> wrote:

> Unfortunately there isn't.  This is *theoretically* possible with the STIX
> fonts, but that hasn't been implemented.  However, with the Computer Modern
> fonts, many of the glyphs simply aren't present (upright Greek, for example)
> to make this happen.
>
> That said, I'm not sure this is necessarily a good idea.  Math has a set of
> commonly accepted conventions about when to use italic vs. upright that may
> only confuse the reader when not followed.  Can you provide a use case?
>
> Cheers,
> Mike
>
> Eli Brosh wrote:
>
>> Hello
>> I there a way to change the default mathtext font from cal to rm ?
>> I would like to use the rm (serif) font without stating rm{...} or
>> mathrm{...}.
>> Is it possible to do using the matplotlibrc ?
>> can you give me an example of how this is done ?
>>
>> Thanks
>> Eli
>> ------------------------------------------------------------------------
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>> challenge
>> Build the coolest Linux based applications with Moblin SDK & win great
>> prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the
>> world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>
>
>

Re: [Matplotlib-users] default mathtext font

[Michael D. <md...@st...>]

As an alternative, you could just use Unicode to insert the Greek 
characters:

r"α-Fe (Someone 2003)"

The default font used by matplotlib, Vera Sans, includes a full set of 
Greek characters. This, of course, requires an editor that supports 
Unicode and a coding directive at the top of your source files, eg.:

# -*- coding: utf-8 -*-

Cheers,
Mike

Eli Brosh wrote:
> Here is the use case I have in mind:
> Plotting properties of various phases of iron, I need a legend with 
> greek letters and normal text:
> \alpha-Fe, Someone (2003)
>
> Now, I need the names e.g. someone to be upright.
> Also, the relbar between \alpha and Fe is shorter with normal text 
> fonts than with italics.
>
> I can solve the problem by using r'\rm{\alpha-Fe, Someone (2003)}' but 
> it would be easier if I could just change the defaults.
>
> Eli
>
>
> On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom <md...@st... 
> <mailto:md...@st...>> wrote:
>
>     Unfortunately there isn't. This is *theoretically* possible with
>     the STIX fonts, but that hasn't been implemented. However, with
>     the Computer Modern fonts, many of the glyphs simply aren't
>     present (upright Greek, for example) to make this happen.
>
>     That said, I'm not sure this is necessarily a good idea. Math has
>     a set of commonly accepted conventions about when to use italic
>     vs. upright that may only confuse the reader when not followed.
>     Can you provide a use case?
>
>     Cheers,
>     Mike
>
>     Eli Brosh wrote:
>
>         Hello
>         I there a way to change the default mathtext font from cal to rm ?
>         I would like to use the rm (serif) font without stating
>         rm{...} or mathrm{...}.
>         Is it possible to do using the matplotlibrc ?
>         can you give me an example of how this is done ?
>
>         Thanks
>         Eli
>         ------------------------------------------------------------------------
>
>         -------------------------------------------------------------------------
>         This SF.Net email is sponsored by the Moblin Your Move
>         Developer's challenge
>         Build the coolest Linux based applications with Moblin SDK &
>         win great prizes
>         Grand prize is a trip for two to an Open Source event anywhere
>         in the world
>         http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>         ------------------------------------------------------------------------
>
>         _______________________________________________
>         Matplotlib-users mailing list
>         Mat...@li...
>         <mailto:Mat...@li...>
>         https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
>

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Re: [Matplotlib-users] default mathtext font

[Eli B. <eb...@gm...>]

Thanks,
This seems to be a solution.
I have an editor that supports unicode.
But, can you please explain better how do I make the coding directive at the
top of my source files ?
Where do I write the command:
# -*- coding: utf-8 -*-

Is it inside the python script ?


Sorry for the ignorance.
Eli

On Tue, Jul 22, 2008 at 10:14 AM, Michael Droettboom <md...@st...>
wrote:

> As an alternative, you could just use Unicode to insert the Greek
> characters:
>
> r"α-Fe (Someone 2003)"
>
> The default font used by matplotlib, Vera Sans, includes a full set of
> Greek characters. This, of course, requires an editor that supports Unicode
> and a coding directive at the top of your source files, eg.:
>
> # -*- coding: utf-8 -*-
>
> Cheers,
> Mike
>
> Eli Brosh wrote:
>
>> Here is the use case I have in mind:
>> Plotting properties of various phases of iron, I need a legend with greek
>> letters and normal text:
>> \alpha-Fe, Someone (2003)
>>
>> Now, I need the names e.g. someone to be upright.
>> Also, the relbar between \alpha and Fe is shorter with normal text fonts
>> than with italics.
>>
>> I can solve the problem by using r'\rm{\alpha-Fe, Someone (2003)}' but it
>> would be easier if I could just change the defaults.
>>
>> Eli
>>
>>
>> On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom <md...@st...<mailto:
>> md...@st...>> wrote:
>>
>>    Unfortunately there isn't. This is *theoretically* possible with
>>    the STIX fonts, but that hasn't been implemented. However, with
>>    the Computer Modern fonts, many of the glyphs simply aren't
>>    present (upright Greek, for example) to make this happen.
>>
>>    That said, I'm not sure this is necessarily a good idea. Math has
>>    a set of commonly accepted conventions about when to use italic
>>    vs. upright that may only confuse the reader when not followed.
>>    Can you provide a use case?
>>
>>    Cheers,
>>    Mike
>>
>>    Eli Brosh wrote:
>>
>>        Hello
>>        I there a way to change the default mathtext font from cal to rm ?
>>        I would like to use the rm (serif) font without stating
>>        rm{...} or mathrm{...}.
>>        Is it possible to do using the matplotlibrc ?
>>        can you give me an example of how this is done ?
>>
>>        Thanks
>>        Eli
>>
>>  ------------------------------------------------------------------------
>>
>>
>>  -------------------------------------------------------------------------
>>        This SF.Net email is sponsored by the Moblin Your Move
>>        Developer's challenge
>>        Build the coolest Linux based applications with Moblin SDK &
>>        win great prizes
>>        Grand prize is a trip for two to an Open Source event anywhere
>>        in the world
>>        http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>        <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>>
>>  ------------------------------------------------------------------------
>>
>>        _______________________________________________
>>        Matplotlib-users mailing list
>>        Mat...@li...
>>        <mailto:Mat...@li...>
>>        https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>
>>
>>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>

Re: [Matplotlib-users] default mathtext font

[Michael D. <md...@st...>]

Yes, you would put it at the top of your .py file.

In order to use Unicode in Python source code, you have to tell the 
Python interpreter what encoding the file is in.  That's done with a 
little "magic" comment at the top of the file.  The popular Unixy 
editors (emacs, vim etc.) also understand this comment and will save the 
file correctly.  Possibly other editors do as well.

For more gory details that you probably need, see this:

http://www.amk.ca/python/howto/unicode

particularly the section "Unicode Literals in Python Source Code".

Cheers,
Mike

Eli Brosh wrote:
> Thanks,
> This seems to be a solution.
> I have an editor that supports unicode.
> But, can you please explain better how do I make the coding directive 
> at the top of my source files ?
> Where do I write the command:
> # -*- coding: utf-8 -*-
>
> Is it inside the python script ?
>
>
> Sorry for the ignorance.
> Eli
>
> On Tue, Jul 22, 2008 at 10:14 AM, Michael Droettboom <md...@st... 
> <mailto:md...@st...>> wrote:
>
>     As an alternative, you could just use Unicode to insert the Greek
>     characters:
>
>     r"α-Fe (Someone 2003)"
>
>     The default font used by matplotlib, Vera Sans, includes a full
>     set of Greek characters. This, of course, requires an editor that
>     supports Unicode and a coding directive at the top of your source
>     files, eg.:
>
>     # -*- coding: utf-8 -*-
>
>
>     Cheers,
>     Mike
>
>     Eli Brosh wrote:
>
>         Here is the use case I have in mind:
>         Plotting properties of various phases of iron, I need a legend
>         with greek letters and normal text:
>         \alpha-Fe, Someone (2003)
>
>         Now, I need the names e.g. someone to be upright.
>         Also, the relbar between \alpha and Fe is shorter with normal
>         text fonts than with italics.
>
>         I can solve the problem by using r'\rm{\alpha-Fe, Someone
>         (2003)}' but it would be easier if I could just change the
>         defaults.
>
>         Eli
>
>
>         On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom
>         <md...@st... <mailto:md...@st...>
>         <mailto:md...@st... <mailto:md...@st...>>> wrote:
>
>            Unfortunately there isn't. This is *theoretically* possible
>         with
>            the STIX fonts, but that hasn't been implemented. However, with
>            the Computer Modern fonts, many of the glyphs simply aren't
>            present (upright Greek, for example) to make this happen.
>
>            That said, I'm not sure this is necessarily a good idea.
>         Math has
>            a set of commonly accepted conventions about when to use italic
>            vs. upright that may only confuse the reader when not followed.
>            Can you provide a use case?
>
>            Cheers,
>            Mike
>
>            Eli Brosh wrote:
>
>                Hello
>                I there a way to change the default mathtext font from
>         cal to rm ?
>                I would like to use the rm (serif) font without stating
>                rm{...} or mathrm{...}.
>                Is it possible to do using the matplotlibrc ?
>                can you give me an example of how this is done ?
>
>                Thanks
>                Eli
>              
>          ------------------------------------------------------------------------
>
>              
>          -------------------------------------------------------------------------
>                This SF.Net email is sponsored by the Moblin Your Move
>                Developer's challenge
>                Build the coolest Linux based applications with Moblin
>         SDK &
>                win great prizes
>                Grand prize is a trip for two to an Open Source event
>         anywhere
>                in the world
>              
>          http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>              
>          <http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>>
>              
>          ------------------------------------------------------------------------
>
>                _______________________________________________
>                Matplotlib-users mailing list
>                Mat...@li...
>         <mailto:Mat...@li...>
>                <mailto:Mat...@li...
>         <mailto:Mat...@li...>>
>
>              
>          https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
>
>
>     -- 
>     Michael Droettboom
>     Science Software Branch
>     Operations and Engineering Division
>     Space Telescope Science Institute
>     Operated by AURA for NASA
>
>

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Re: [Matplotlib-users] default mathtext font

[Eli B. <eb...@gm...>]

Thanks,
This unicode thing works like magic.
The only thing I am still unable to do is to insert the symbol \epsilon (as
distinct from \varepsilon).
For some reason, the varepsilon ε is printed fine, but a blank square is
printed instead of the lunate epsilon ϵ.
That is u' ε ' works,  while u' ϵ' does not.

Any idea why this is happening ?

Eli


2008/7/22 Michael Droettboom <md...@st...>:

> Yes, you would put it at the top of your .py file.
>
> In order to use Unicode in Python source code, you have to tell the Python
> interpreter what encoding the file is in.  That's done with a little "magic"
> comment at the top of the file.  The popular Unixy editors (emacs, vim etc.)
> also understand this comment and will save the file correctly.  Possibly
> other editors do as well.
>
> For more gory details that you probably need, see this:
>
> http://www.amk.ca/python/howto/unicode
>
> particularly the section "Unicode Literals in Python Source Code".
>
> Cheers,
> Mike
>
> Eli Brosh wrote:
>
>> Thanks,
>> This seems to be a solution.
>> I have an editor that supports unicode.
>> But, can you please explain better how do I make the coding directive at
>> the top of my source files ?
>> Where do I write the command:
>> # -*- coding: utf-8 -*-
>>
>> Is it inside the python script ?
>>
>>
>> Sorry for the ignorance.
>> Eli
>>
>> On Tue, Jul 22, 2008 at 10:14 AM, Michael Droettboom <md...@st...<mailto:
>> md...@st...>> wrote:
>>
>>    As an alternative, you could just use Unicode to insert the Greek
>>    characters:
>>
>>    r"α-Fe (Someone 2003)"
>>
>>    The default font used by matplotlib, Vera Sans, includes a full
>>    set of Greek characters. This, of course, requires an editor that
>>    supports Unicode and a coding directive at the top of your source
>>    files, eg.:
>>
>>    # -*- coding: utf-8 -*-
>>
>>
>>    Cheers,
>>    Mike
>>
>>    Eli Brosh wrote:
>>
>>        Here is the use case I have in mind:
>>        Plotting properties of various phases of iron, I need a legend
>>        with greek letters and normal text:
>>        \alpha-Fe, Someone (2003)
>>
>>        Now, I need the names e.g. someone to be upright.
>>        Also, the relbar between \alpha and Fe is shorter with normal
>>        text fonts than with italics.
>>
>>        I can solve the problem by using r'\rm{\alpha-Fe, Someone
>>        (2003)}' but it would be easier if I could just change the
>>        defaults.
>>
>>        Eli
>>
>>
>>        On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom
>>        <md...@st... <mailto:md...@st...>
>>        <mailto:md...@st... <mailto:md...@st...>>> wrote:
>>
>>           Unfortunately there isn't. This is *theoretically* possible
>>        with
>>           the STIX fonts, but that hasn't been implemented. However, with
>>           the Computer Modern fonts, many of the glyphs simply aren't
>>           present (upright Greek, for example) to make this happen.
>>
>>           That said, I'm not sure this is necessarily a good idea.
>>        Math has
>>           a set of commonly accepted conventions about when to use italic
>>           vs. upright that may only confuse the reader when not followed.
>>           Can you provide a use case?
>>
>>           Cheers,
>>           Mike
>>
>>           Eli Brosh wrote:
>>
>>               Hello
>>               I there a way to change the default mathtext font from
>>        cal to rm ?
>>               I would like to use the rm (serif) font without stating
>>               rm{...} or mathrm{...}.
>>               Is it possible to do using the matplotlibrc ?
>>               can you give me an example of how this is done ?
>>
>>               Thanks
>>               Eli
>>
>> ------------------------------------------------------------------------
>>
>>
>> -------------------------------------------------------------------------
>>               This SF.Net email is sponsored by the Moblin Your Move
>>               Developer's challenge
>>               Build the coolest Linux based applications with Moblin
>>        SDK &
>>               win great prizes
>>               Grand prize is a trip for two to an Open Source event
>>        anywhere
>>               in the world
>>
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>        <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>>                     <
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>        <http://moblin-contest.org/redirect.php?banner_id=100&url=/>>
>>
>> ------------------------------------------------------------------------
>>
>>               _______________________________________________
>>               Matplotlib-users mailing list
>>               Mat...@li...
>>        <mailto:Mat...@li...>
>>               <mailto:Mat...@li...
>>        <mailto:Mat...@li...>>
>>
>>
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>
>>
>>
>>    --    Michael Droettboom
>>    Science Software Branch
>>    Operations and Engineering Division
>>    Space Telescope Science Institute
>>    Operated by AURA for NASA
>>
>>
>>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>

Re: [Matplotlib-users] default mathtext font

[Michael D. <md...@st...>]

(Sorry for the delay -- just back from vacation)

It looks like the default Vera Sans font that matplotlib uses doesn't 
actually have the lunate epsilon character.  If you have it installed, 
you could have matplotlib use the DejaVu Sans font instead (which is 
essentially Vera Sans with a larger set of characters).

In your matplotlibrc, set font.sans to DejaVu Sans

Cheers,
Mike

Eli Brosh wrote:
> Thanks,
> This unicode thing works like magic.
> The only thing I am still unable to do is to insert the symbol 
> \epsilon (as distinct from \varepsilon).
> For some reason, the varepsilon ε is printed fine, but a blank square 
> is printed instead of the lunate epsilon ϵ.
> That is u' ε ' works,  while u' ϵ' does not.
>
> Any idea why this is happening ?
>
> Eli
>
>
> 2008/7/22 Michael Droettboom <md...@st... <mailto:md...@st...>>:
>
>     Yes, you would put it at the top of your .py file.
>
>     In order to use Unicode in Python source code, you have to tell
>     the Python interpreter what encoding the file is in.  That's done
>     with a little "magic" comment at the top of the file.  The popular
>     Unixy editors (emacs, vim etc.) also understand this comment and
>     will save the file correctly.  Possibly other editors do as well.
>
>     For more gory details that you probably need, see this:
>
>     http://www.amk.ca/python/howto/unicode
>
>     particularly the section "Unicode Literals in Python Source Code".
>
>
>     Cheers,
>     Mike
>
>     Eli Brosh wrote:
>
>         Thanks,
>         This seems to be a solution.
>         I have an editor that supports unicode.
>         But, can you please explain better how do I make the coding
>         directive at the top of my source files ?
>         Where do I write the command:
>         # -*- coding: utf-8 -*-
>
>         Is it inside the python script ?
>
>
>         Sorry for the ignorance.
>         Eli
>
>         On Tue, Jul 22, 2008 at 10:14 AM, Michael Droettboom
>         <md...@st... <mailto:md...@st...>
>         <mailto:md...@st... <mailto:md...@st...>>> wrote:
>
>            As an alternative, you could just use Unicode to insert the
>         Greek
>            characters:
>
>            r"α-Fe (Someone 2003)"
>
>            The default font used by matplotlib, Vera Sans, includes a full
>            set of Greek characters. This, of course, requires an
>         editor that
>            supports Unicode and a coding directive at the top of your
>         source
>            files, eg.:
>
>            # -*- coding: utf-8 -*-
>
>
>            Cheers,
>            Mike
>
>            Eli Brosh wrote:
>
>                Here is the use case I have in mind:
>                Plotting properties of various phases of iron, I need a
>         legend
>                with greek letters and normal text:
>                \alpha-Fe, Someone (2003)
>
>                Now, I need the names e.g. someone to be upright.
>                Also, the relbar between \alpha and Fe is shorter with
>         normal
>                text fonts than with italics.
>
>                I can solve the problem by using r'\rm{\alpha-Fe, Someone
>                (2003)}' but it would be easier if I could just change the
>                defaults.
>
>                Eli
>
>
>                On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom
>                <md...@st... <mailto:md...@st...>
>         <mailto:md...@st... <mailto:md...@st...>>
>                <mailto:md...@st... <mailto:md...@st...>
>         <mailto:md...@st... <mailto:md...@st...>>>> wrote:
>
>                   Unfortunately there isn't. This is *theoretically*
>         possible
>                with
>                   the STIX fonts, but that hasn't been implemented.
>         However, with
>                   the Computer Modern fonts, many of the glyphs simply
>         aren't
>                   present (upright Greek, for example) to make this
>         happen.
>
>                   That said, I'm not sure this is necessarily a good idea.
>                Math has
>                   a set of commonly accepted conventions about when to
>         use italic
>                   vs. upright that may only confuse the reader when
>         not followed.
>                   Can you provide a use case?
>
>                   Cheers,
>                   Mike
>
>                   Eli Brosh wrote:
>
>                       Hello
>                       I there a way to change the default mathtext
>         font from
>                cal to rm ?
>                       I would like to use the rm (serif) font without
>         stating
>                       rm{...} or mathrm{...}.
>                       Is it possible to do using the matplotlibrc ?
>                       can you give me an example of how this is done ?
>
>                       Thanks
>                       Eli
>                            
>         ------------------------------------------------------------------------
>
>                            
>         -------------------------------------------------------------------------
>                       This SF.Net email is sponsored by the Moblin
>         Your Move
>                       Developer's challenge
>                       Build the coolest Linux based applications with
>         Moblin
>                SDK &
>                       win great prizes
>                       Grand prize is a trip for two to an Open Source
>         event
>                anywhere
>                       in the world
>                            
>         http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>              
>          <http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>>
>                            
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>              
>          <http://moblin-contest.org/redirect.php?banner_id=100&url=/
>         <http://moblin-contest.org/redirect.php?banner_id=100&url=/>>>
>                            
>         ------------------------------------------------------------------------
>
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>     Science Software Branch
>     Operations and Engineering Division
>     Space Telescope Science Institute
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Re: [Matplotlib-users] default mathtext font

[Eli B. <eb...@gm...>]

Thank you Michael,
I tried switching the matplotlib font to Dejavu Sans but it also does not
seem to recognize the lunate epsilon ϵ.
When I wrote title(u'ϵ-Fe'), it printed ε-Fe instead.
I tried several other fonts but the problem did not disappear.
It seems that the bes choice after all is to write r'$\rm{\epsilon-Fe}$'.

Thanks again
Eli

On Thu, Jul 31, 2008 at 9:03 AM, Michael Droettboom <md...@st...> wrote:

> (Sorry for the delay -- just back from vacation)
>
> It looks like the default Vera Sans font that matplotlib uses doesn't
> actually have the lunate epsilon character.  If you have it installed, you
> could have matplotlib use the DejaVu Sans font instead (which is essentially
> Vera Sans with a larger set of characters).
>
> In your matplotlibrc, set font.sans to DejaVu Sans
>
> Cheers,
> Mike
>
> Eli Brosh wrote:
>
>> Thanks,
>> This unicode thing works like magic.
>> The only thing I am still unable to do is to insert the symbol \epsilon
>> (as distinct from \varepsilon).
>> For some reason, the varepsilon ε is printed fine, but a blank square is
>> printed instead of the lunate epsilon ϵ.
>> That is u' ε ' works,  while u' ϵ' does not.
>>
>> Any idea why this is happening ?
>>
>> Eli
>>
>>
>> 2008/7/22 Michael Droettboom <md...@st... <mailto:md...@st...>>:
>>
>>    Yes, you would put it at the top of your .py file.
>>
>>    In order to use Unicode in Python source code, you have to tell
>>    the Python interpreter what encoding the file is in.  That's done
>>    with a little "magic" comment at the top of the file.  The popular
>>    Unixy editors (emacs, vim etc.) also understand this comment and
>>    will save the file correctly.  Possibly other editors do as well.
>>
>>    For more gory details that you probably need, see this:
>>
>>    http://www.amk.ca/python/howto/unicode
>>
>>    particularly the section "Unicode Literals in Python Source Code".
>>
>>
>>    Cheers,
>>    Mike
>>
>>    Eli Brosh wrote:
>>
>>        Thanks,
>>        This seems to be a solution.
>>        I have an editor that supports unicode.
>>        But, can you please explain better how do I make the coding
>>        directive at the top of my source files ?
>>        Where do I write the command:
>>        # -*- coding: utf-8 -*-
>>
>>        Is it inside the python script ?
>>
>>
>>        Sorry for the ignorance.
>>        Eli
>>
>>        On Tue, Jul 22, 2008 at 10:14 AM, Michael Droettboom
>>        <md...@st... <mailto:md...@st...>
>>        <mailto:md...@st... <mailto:md...@st...>>> wrote:
>>
>>           As an alternative, you could just use Unicode to insert the
>>        Greek
>>           characters:
>>
>>           r"α-Fe (Someone 2003)"
>>
>>           The default font used by matplotlib, Vera Sans, includes a full
>>           set of Greek characters. This, of course, requires an
>>        editor that
>>           supports Unicode and a coding directive at the top of your
>>        source
>>           files, eg.:
>>
>>           # -*- coding: utf-8 -*-
>>
>>
>>           Cheers,
>>           Mike
>>
>>           Eli Brosh wrote:
>>
>>               Here is the use case I have in mind:
>>               Plotting properties of various phases of iron, I need a
>>        legend
>>               with greek letters and normal text:
>>               \alpha-Fe, Someone (2003)
>>
>>               Now, I need the names e.g. someone to be upright.
>>               Also, the relbar between \alpha and Fe is shorter with
>>        normal
>>               text fonts than with italics.
>>
>>               I can solve the problem by using r'\rm{\alpha-Fe, Someone
>>               (2003)}' but it would be easier if I could just change the
>>               defaults.
>>
>>               Eli
>>
>>
>>               On Mon, Jul 21, 2008 at 6:21 PM, Michael Droettboom
>>               <md...@st... <mailto:md...@st...>
>>        <mailto:md...@st... <mailto:md...@st...>>
>>               <mailto:md...@st... <mailto:md...@st...>
>>        <mailto:md...@st... <mailto:md...@st...>>>> wrote:
>>
>>                  Unfortunately there isn't. This is *theoretically*
>>        possible
>>               with
>>                  the STIX fonts, but that hasn't been implemented.
>>        However, with
>>                  the Computer Modern fonts, many of the glyphs simply
>>        aren't
>>                  present (upright Greek, for example) to make this
>>        happen.
>>
>>                  That said, I'm not sure this is necessarily a good idea.
>>               Math has
>>                  a set of commonly accepted conventions about when to
>>        use italic
>>                  vs. upright that may only confuse the reader when
>>        not followed.
>>                  Can you provide a use case?
>>
>>                  Cheers,
>>                  Mike
>>
>>                  Eli Brosh wrote:
>>
>>                      Hello
>>                      I there a way to change the default mathtext
>>        font from
>>               cal to rm ?
>>                      I would like to use the rm (serif) font without
>>        stating
>>                      rm{...} or mathrm{...}.
>>                      Is it possible to do using the matplotlibrc ?
>>                      can you give me an example of how this is done ?
>>
>>                      Thanks
>>                      Eli
>>
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>>
>>           --    Michael Droettboom
>>           Science Software Branch
>>           Operations and Engineering Division
>>           Space Telescope Science Institute
>>           Operated by AURA for NASA
>>
>>
>>
>>    --    Michael Droettboom
>>    Science Software Branch
>>    Operations and Engineering Division
>>    Space Telescope Science Institute
>>    Operated by AURA for NASA
>>
>>
>>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>