Labelangleitem question

[Stéphane RIFF]

First, Thanks for answer.

I found another way to do this that is not explain in the documentation.

We can set the labelangleitem with mapscript to : 
$layer->set("labelangleitem","(angle*-1)");
This works for me. So maybe it can be part of the documentation ?

Does the subquery method is still using the indexes of the table (I 
don't think so) ?

Thanks
Steff

thomas bonfort wrote:

>you can use a custom query on your database
>
>DATA "the_geom from
>	(SELECT gid, nom, the_geom, (-angle) AS inv_angle FROM troncon_route)
>	as foo using unique gid"
>
>and then use
>ANGLE [inv_angle] in your label block
>
>tb
>
>On 9/13/07, Stéphane RIFF <stephane.riff at cerene.fr> wrote:
>  
>
>>Hello,
>>
>>I want to invert the sign of the field I want to use in
>>layer->labelangleitem.
>>I don't want to it in the database because the information are sent by gps.
>>
>>I want to know if it's possible do it on the fly with mapscript and how
>>(expression in the labelangleitem property ???) ?
>>
>>Thanks
>>Steff
>>
>>    
>>
>
>  
>