Re: [UMN_MAPSERVER-USERS] Raster - TIF vs JPG

[Roland Martin]

"Tiled TIFF files with overviews pre-built are one of the highest performance ways of serving large raster images."
From: http://mapserver.gis.umn.edu/docs/howto/raster_data/?searchterm=raster%20tiff

Not sure what it means by 'overviews', though!

Presumably JPG images require decompression prior to creating the output image, whereas TIFFs can just be read straight off.

Cheers,
Roland.

On 21/08/06, Léveillé, James <[EMAIL PROTECTED]> wrote:

Hi,

 

I have about 4 000 georeferenced images.

I can use either TIF (with overviews) or JPG format.

Which one should I use with MapServer ?

Which one offers the most performance ?

 

Regards

 

__________________________________________

James Léveillé

 

Intélec Géomatique

420, boul. Charest Est
Bureau 400
Québec (QC), Canada
G1K 8M4

 

Intélec Géomatique: 418.687.5000

MTQ: 418.380.2005 (#227)

 

--
Please note my new email address. Use other addresses at your peril.