[mapserver-users] Resampling and image quality?
P Kishor
punk.kish at gmail.com
Thu Mar 27 21:45:43 PDT 2008
On 3/27/08, Gregor Mosheh <gregor at hostgis.com> wrote:
> I'll be on the plane all day tomorrow, on my way to DC for the
> PostgreSQL East conference. If I don't reply, it's not personal. :)
>
>
>
> P Kishor wrote:
> > yikes! The ms2 version is fugly.
>
>
> M hm. This is the first time we've ever compared the PNG with the
> Mapserver output side by side, especially in a situation where the
> raster has text in it, so I'm also surprised!
>
>
>
> > This sounds really silly, but have you tried with exactly the same
> > image in both instances? That is, not the sliced version for
> > MapServer, but exactly the same one you have for Google Maps?
>
>
> The one I'm given for use in Mapserver, is the same PNG except left
> whole and with a world file added. The "plain PNG" version is sliced for
> use in a GTileoverlay, but is otherwise the same.
>
> Or did I misunderstand the question?
Actually, I misspoke, nevertheless, you misunderstood as well.
I understand that you start with the same PNG, then you duplicate it,
slice one of them up for GMaps, and serve the whole one to MapServer.
What I meant to say was -- use exactly the same PNG for both tests;
that is, either use the sliced one for both GMaps and MapServer, or
the whole one for both.
I know this sounds silly, but hey, it eliminates even that remote possibility.
In any case, the problem is probably somewhere else.
>
>
> --
>
> Gregor Mosheh / Greg Allensworth, BS, A+
> System Administrator
> HostGIS cartographic development & hosting services
> http://www.HostGIS.com/
>
> "Remember that no one cares if you can back up,
> only if you can restore." - AMANDA
>
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