Posts made by Valery Fremaux

Moodle in English -> General help -> Tex filter setup, documentation ? -> Posting for new people needing Tex filtering

by Valery Fremaux -

Thanks Andreas.

Your track was usefull. But there is no obvious complete howTo to get this resolved, in the Moodle documentation. So I will resume here for new incomers to Moodle. I will maybe have some time to propose this abstract for Moodle doculentation.

Using Moodle Tex filter

Overview

Tex Filter uses generic in-content filtering mechanism to layout Tex mathematical notation and formulas. It relies on the open source development of a Tex -> Gif "on the fly" generator called mimeTex.

Activating Tex Filter in Moodle

To activate the tex filtering, and enabling formula graphic generation, you should :

  1. Get the mimeTex executable (source or binaries) (use the previous link to get full binaries or to know how to compile source)
  2. copy the mimeTex.exe file into the /cgi-bin/ location (dont'use any subpath) and call it mimeTex.cgi. (if Unix, don't forget to make it executable by the HTTP server).
  3. In the Moodle MyMoodle->Admin->Configuration->Filters menu, activate the Tex Filter.
  4. Make a new resource. Edit content and embed the Tex code within "$$" escapes. Example : $$E=\{u_{1},u_{2},\cdots, u_{n},\cdots\}$$
  5. Edit the rest of the document as standard HTML, using HTMLArea operation (if the resource is a Moodle Web page).
  6. Save the resource and it should work.

Note that the Moodle filter has some syntactic limitations. A Tex syntax reference as a Moodle glossary is available for all admited tags.

How it works really

 The Moodle Tex filter captures Tex sequences between "$$" markers and replace it with a call for a dynamically generated image : <IMG SRC="/Cgi-bin/mimeTex.cgi?Tex_code_string">. The CGI converter generates "on the fly" Gif snaptshots rendering the formula or symbolisms, directely sent to the browser. There is no image caching server side, which is not a so big desease as generated images are rather small sized. 

Rendering quality

The mimeTex CGI do render at midle range quality. latexrender is known performing better aliasing, but I have no information to intergrate it. 

Valery.

 
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Moodle in English -> General help -> Restricting activities and resources to specific groups -> Re: Restricting activities and resources to specific groups

by Valery Fremaux -

Well in fact, being able to assign a special work to a specific group may be valuable. I hope only this will not add too much complexity to the course operations.

I'm dealing now with a much more serious problem which is user content multilingual management. This is a bit more tricky for the internal data model !

Merry Christsmas and HNY

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Moodle in English -> General help -> Restricting activities and resources to specific groups -> Re: Restricting activities and resources to specific groups

by Valery Fremaux -

Hi Ray,

For what we know right now, deploying Moodle for 4 monthes, we checked that the group feature only isolates groups within an activity, so your course community is splitted into separated concurrent but simultaneous jobs.

There is no way to specify that a partic ular group will access such activity you set up, so attributing a job to only one group within your course.

Group selection only tells people will work in a subspace, independantly of each other, and will not share posts, or stored data neither.

I know also that all activities do not have a group behaviour.

One thing more :  when collecting documents from grouped students, recollection and feedback keep being performed individually, so some people of a group may be seen has not having delivered the job, though another group member did post the documents.

This is obviously not a serious problem as you can check deliveries group by group.

Hope it will lighten you enough...

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Moodle in English -> General help -> Alta de nuevos roles -> Re: Alta de nuevos roles

by Valery Fremaux -

Hola lourdes,

en el estado actual del producto creo que no. Nosotros tenemos el mismo problema para un uso en un proyecto Europeo-Mediterraneo, en qual la estructura de los usuarios es tambien bastante compleja.

Averiguamos que la plataforma no es construida para un uso multi-institucional. El esquema de usuarios es estandard con los quatro niveles que conoces.

Pero no hemos desmontado tampoco el programma a nivel PHP (aunque bajemos ya en las bibliotecas y el modelo de datos)...

Nosotros la usamos en la escuela ( http://vfedu.eisti.fr ) con un excito cresciente. En este contexto functiona bien y responde a la estrutura de nuestras operaciones.

Cariño de Paris.

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