From mapcollect at gmx.net  Wed Jan  3 15:37:04 2007
From: mapcollect at gmx.net (Harald Schmidt)
Date: Thu, 04 Jan 2007 00:37:04 +0100
Subject: [tiling] Tilecache-Tiles look "scrambled"
Message-ID: <20070103233704.15820@gmx.net>

Hello,

I am trying to use Tilecache to serve tiles for WorldWind. The problem: The tiles displayed on WorldWind are looking very strange - like they were scrambled.
The corresponding tiles that Tilecache saved in the Tilecache-Cache-Folder are looking fine. For example:

http://169.254.3.166/cgi-bin/tilecache.cgi?T=Oceans&L=0&X=6&Y=4 

results in the described "scrambled" image. the corresponding cache-tile in C:\ms4w\tmp\tilecache\Oceans\00\000\000\006\000\000\004.jpg looks OK . 

Apache Error-Log doesn't show any Errors.

I guess  mapfile/mapscript can't be the reason because the tiles in cache-folder are ok (and other apps like Ka-Map also work with this mapfile)
What might be the reason ??

Thank you very much for any help !

I am using MS4W (Mapserver 4.8,Apache/2.0.58 (Win32)) with Python 2.4.

This is my tilecache.cfg:

[cache]
type=DiskCache
base=C:\ms4w\tmp\tilecache

[Oceans]

type=MapServerLayer
layers=Oceans
mapfile=C:\ms4w\apps\Oceans-Mapfile/Oceans.map


bbox=-180.0,-90.0,180.0,90.0     

extension=jpeg
size=512,512
resolutions=0.0703125,0.0351563,0.0175781,0.0087891,0.0043945,0.00219973,0.0010986,0.0005493,0.0002747,0.0001373




The WorldWind-Layer has <NumberLevels>=10 and <LevelZeroTileSizeDegrees>=36 and <TextureSizePixels>=512





Regards,
Harry Schmidt

-- 
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From jb-tiling at jasonbirch.com  Tue Jan 16 22:26:45 2007
From: jb-tiling at jasonbirch.com (Jason Birch)
Date: Tue, 16 Jan 2007 22:26:45 -0800
Subject: [tiling] MapGuide tiling questions...
Message-ID: <45ADC1A5.9000401@jasonbirch.com>

Hi all,

The MapGuide PSC is evaluating its internal tile storage mechanism as 
part of an upcoming RFC proposal.

http://lists.osgeo.org/pipermail/mapguide-internals/2007-January/thread.html
Subject:  RFC required for tile caching changes?

Or if you prefer:
http://www.nabble.com/MapGuide-Internals-f16611.html

A question has come up about whether TMS allows for reducing the number 
of tiles stored in a given directory by using a hash structure based on 
row / column.  Comments on this topic (and other points in this thread) 
directed to the mapguide-internals list would be highly appreciated...

http://lists.osgeo.org/mailman/listinfo/mapguide-internals

Thanks,
Jason