Re: [Maposmatic-dev] Bad Mapnik renderings: corrupted label halos

[Maxime Petazzoni]

Hi,

* address@hidden <address@hidden> [2010-11-11 15:27:22]:

> well after a time I noticed, that I become bad Map renderings cause on
> some labels the white halos are misplaced. The funny thing is that if
> I invoke mapnik with it's generate_image.py and the same mapstyle
> everything works fine. This bug is in Vector and Rasterized output :(
> 
> Is there something special the ocitysmap render class does?

Yes, we are aware of this problem. But this is actually a Mapnik issue.
In OCitySMap, the Mapnik canvas is later scaled, which apparently messes
up every string that has a while halo around it. Removing the
halo_radius settings from the Mapnik stylesheet fixes the problem for
rendering, but you loose the halo of course.

We have reported the issue to Mapnik:
  http://trac.mapnik.org/ticket/585
  http://trac.mapnik.org/ticket/586

We are eagerly waiting for them to fix it, that's a blocker for our next
release.

- Maxime
-- 
Maxime Petazzoni <http://www.bulix.org>
 ``One by one, the penguins took away my sanity.''
Linux kernel and software developer at MontaVista Software

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