[OSM-talk] New static-maps API - relations

[Yann Coupin]

If my memory is correct you first do a "createcoloralpha(r,g,b,a)"  
where r,g,b & a are 8 bits values but I don't remember if 0 is full  
transparent or full opaque. You then use that color as usual. You may  
have to first create a fully transparent color and use it to fill the  
entire image otherwise the resulting image ends up opaque.

Yann

Le 7 juil. 09 à 23:56, OJ W a écrit :

> p.s. I'm still trying to figure-out transparency in GD.  Anyone know
> how to put a semitransparent line on a transparent background, and
> save the result as PNG?