Re: Context and metapost: using \frac

[Matthieu Stigler <matthieu.stigler@gmail.com>]

Le 26/04/2011 16:33, Andreas Harder a écrit :
> Am 26.04.2011 um 13:36 schrieb Matthieu Stigler:
>
>> Le 26/04/2011 12:36, Hans Hagen a écrit :
>>> On 26-4-2011 12:02, Matthieu Stigler wrote:
>>>> Dear Hans
>>>>
>>>> Thanks for your quick answer! I was however not able to produce the
>>>> graph with the textext code... Should I actually then use another
>>>> compiler? I tried with context and texexec (I thought texexec is the
>>>> compiler for mkiv, right? I'm on linux ubuntu).
>>> no, use the 'context' command as texexec is for mkii
>>>
>> ok, so I was using the right compiler.... I get a mystake while trying to compile a file with the code you sent... you didn't? Would you be so nice and send complete file, so I can check what is wrong?
>>
>>
>>>> I saw also that, as you mention, context has a \frac:
>>>> http://wiki.contextgarden.net/Math_with_newmat
>>> indeed, \frac is already there for a long time (ams compatible command)
>>> btw, in mkiv there is no m-newmath
>>>
>>>> I tried then to simply add \usemodule[newmat] and compile with context,
>>>> but did not work... Code below, error message below below...
>>>> ! Math error: parameter \Umathfraction_del_size\displaystyle is not set.
>>>> l.3 ...t{411}{$\displaystyle \frac {\sigma _t}{a}$
>>>> }
>>>> <inserted text>  ...ore.mp ; fi ; ;;;]===], false)}
>>> make sure that a font is loaded that has math before \starttext is seen
>>>
>>> (try with \setupbodyfont[palatino] at the top of your file)
>>>
>> this does not work neither.... I still get error message with this code:
>>
>> \usemodule[newmat]
>>
>> \setupbodyfont[palatino]
>>
>> \starttext
>>
>> \startMPpage
>>
>> label.top(textext("$ \frac{\sigma_t}{a}$") scaled 1.00, (1, 1));
>>
>> %label.top(btex $ \frac{\sigma_t}{a}$ etex, (0, 10));
>>
>> %label.top(textext( $\displaystyle \frac{\sigma_t}{a}$ ) scaled   1.00, (1, 1));
>>
>> \stopMPpage
>>
>> \stoptext
> Hi,
>
> this works for me.
>
> \setupbodyfont[palatino]
>
> \startMPpage[offset=1ex]
>    u := cm ;
>    label.top(textext("$ \frac{\sigma_t}{a}$") scaled 2,  origin);
>    label.top(textext("$ \frac{\sigma_t}{a}$"),           (u,u));
>    label.top(textext("$\dfrac{\sigma_t}{a}$") scaled .5, (u,0));
> \stopMPpage
>
Andreas

Thanks for answer!

Is this code you wrote supposed to be the whole doc to compile? And 
compiled with context? If yes, I got an error again... I have version
context --version
MTXrun | main context file: /usr/share/texmf/tex/context/base/context.tex
MTXrun | current version: 2009.11.26 16:2

Is it likel;y then that the problem is solved in more recent versions? I 
would try to update then... I am on Ubuntu 10.10 64b, is there a simple 
way to update from other repos, or should I compile?

Thanks for your help!!!

Matthieu


> Greeting
> 	Andreas
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________