antialiasing line features..

Flavio Hendry flavio at TYDAC.CH
Tue Oct 25 23:02:56 PDT 2005


hi Abe

as said, I had problems with it (hanging mapserver). and the ones which 
seemed to work, I did not see a difference (was using jpeg as output). 
png24 is no option, resulting size of images too large.

Mit freundlichem Gruss / Best Regards
Flavio Hendry

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-----Original Message-----
From: Abe Gillespie <abe.gillespie at GMAIL.COM>
To: MAPSERVER-USERS at LISTS.UMN.EDU
Date: Tue, 25 Oct 2005 12:11:00 -0400
Subject: Re: [UMN_MAPSERVER-USERS] antialiasing line features..

> Hey everyone,
> 
> Sorry, a somewhat OT - This thread has piqued my interest a little. 
> Would someone mind posting examples of aliased vs. antialiased
> images?
>  I'm just curious about the results you can get.
> 
> Thanks!
> -Abe
> 
> On 10/25/05, Dylan Beaudette <dylan at iici.no-ip.org> wrote:
> > On Oct 25, 2005, at 2:54 AM, Flavio Hendry wrote:
> >
> > > Ciao Giorgio
> > >
> > > It might not be the antialiasing but the png24. png24 files tend
> to get
> > > very large, i.e. 400k compared to 70k as a JPEG (check your
> output
> > > directory). Maybe you try JPEG.
> > >
> > > However, I had quite problems with the antialiasing, working on
> some
> > > layer and on some the system hung (no error messages, just
> hanging when
> > > zooming). Removing the antialiasing from the layer worked.
> Strange
> > > behaviour, anybody having this problem?
> > >
> > > Mit freundlichem Gruss / Best Regards
> > > Flavio Hendry
> > >
> > > ----------------------------------------------------------------
> > > TYDAC NEWS http://www.tydac.ch/german/index.php?menu=News_actual
> > > ----------------------------------------------------------------
> > > ############ Mit freundlichen Gruessen / Kind Regards
> > > ############ mailto:flavio at tydac.ch
> > > ############ TYDAC AG - http://www.tydac.ch
> > > #### #### Geographic Information Solutions
> > > #### #### Luternauweg 12 -- CH-3006 Bern
> > > ############ Tel +41 (0)31 368 0180 - Fax +41 (0)31 368 1860
> > > ----------------------------------------------------------------
> > >
> > >
> >
> > Yes. I am noticing a seemingly erratic behavior: If I enable
> > antialiasing with JPEG output format, it does not work. If I enable
> > antialiasing in a tiled line layer it does not work...
> >
> > Are there some good ground rules for antialiasing? i.e. ONLY PNG24,
> > etc. ?
> >
> > Thanks!
> >
> > --
> > Dylan Beaudette
> > Soils and Biogeochemistry Graduate Group
> > University of California at Davis
> > 530.754.7341
> >



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