[mapguide-users] Tiled map doesn't render as GIF
trevor_wekel at otxsystems.com
Mon Apr 19 12:42:15 EDT 2010
Currently, GIF is not supported for tiles. PNG8 can be used as an alternative. When the tile service was being developed, the Unisys and IBM patents on LZW compression had not expired. This made generating GIF images without a license "problematic".
As far as I know, the original LZW patents expired a couple of years ago. There is still an open question on additional patents related to LZW improvements. PNG and PNG8 have never been restricted by patents and are much safer to use from a legal standpoint.
If anyone has more insight into GIF legalities, please feel free to share. If GIF is truly free now, we should probably log a defect/enhancement for tiled GIF support.
From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Zac Spitzer
Sent: April 19, 2010 5:19 AM
To: MapGuide Users Mail List
Subject: Re: [mapguide-users] Tiled map doesn't render as GIF
is gif supported, i know jpg, png and png8 is...
On 19 April 2010 17:38, A H <hizperion at hotmail.com> wrote:
> i'm using MGOS2.1 and i have a tiled map. i tried to set the following in
> serverconfig.ini and restarted the service:
> RenderOnly = 0
> TileCachePath = D:\MapGuide\Server\Repositories\TileCache\
> TileColumnsPerFolder = 30
> TileRowsPerFolder = 30
> DefaultTileSizeX = 300
> DefaultTileSizeY = 300
> ImageFormat = GIF
> but it still process the tiled images as .png instead of .gif. did i miss
> View this message in context: http://n2.nabble.com/Tiled-map-doesn-t-render-as-GIF-tp4923941p4923941.html
> Sent from the MapGuide Users mailing list archive at Nabble.com.
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