[mapserver-users] JPG Tile index in mapserver v5.6.3

[Rahkonen Jukka]

Hi,

Without doing any reading I would suggest first to try what happens if you rename the world files into .wld.

Another thing is that you should not really use jpeg images. Use jpeg compresses tiff files instead.
Read http://gdal.org/frmt_gtiff.html
Remember -co COMPRESS=JPEG and -co PHOTOMETRIC=YCBCR
Read http://gdal.org/gdaladdo.html
Remember gdaladdo --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW YCBCR

The result will use about as much disk space as ECW and it will be a little bit faster.

I have understood that it is no more allowed to even read ECW images as source with a server application without a license from ERDAS and it is rather expensive, close to the price of the whole ERDAS Apollo.

-Jukka Rahkonen-


> -----Alkuperäinen viesti-----
> Lähettäjä: mapserver-users-bounces at lists.osgeo.org 
> [mailto:mapserver-users-bounces at lists.osgeo.org] Puolesta 
> marten.martinsson
> Lähetetty: 28. huhtikuuta 2011 14:45
> Vastaanottaja: mapserver-users at lists.osgeo.org
> Aihe: [mapserver-users] JPG Tile index in mapserver v5.6.3
> 
> Hi!
> 
> I have the following problem:
> I have an installation of Mapserver v5.6.3. For som reason 
> (maby it should
> be like that...) I dont have any ecw-support in my installation.
> I know this could be changed by installing support for GDAL. 
> However I found
> it easier to convert the ecw-files to jpg-files with corresponding
> JGW-files.
> 
> Here is my problem:
> I create a tile index file for my jpg-files and use it to 
> read the raster
> tiles.
> Now it seams like mapserver cannot read the world file for the jpg:s. 
> 
> Is there support for world-files in when accessing jpg-files 
> via a tile
> index file?
> 
> I dont get any error message, only a blank map window, which 
> lead me to the
> conclusion that the geo referensing is corrupt some how...
> 
> Anybody who has encountered the same problem?
> 
> Regards.
> /Mårten
> 
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