ECW Pyramid

[Mark Howard]

You should not need to pyramid ECW files - unless you have a lot of them in a viewable extent. While a single 25Gb ECW file for the world @25 meter resolution gives good performance, 1000 25Mb tiled files would perform poorly at a world view. You CAN create pyramids using a URL grabber in a script pointed to your WMS server. 
 
Mark
 
________________________________

From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of José Ramón López
Sent: Wednesday, December 12, 2007 2:09 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] ECW Pyramid
 
Hi List.

I have populated a raster layer using a Tileindex made from ECW Files. This layer is visible 1:1000 scale with MAXSCALE parameter.
As is not possible to create ECW pyramids. Whe have got another raster layer resampling these ECW files. 
We would like to populate a single raster layer that uses one tile index created from the resampled ECW, visible at 1:10000 scale (and smaller), and another tileindex from the original ECW files visible at bigger scales. 
Is it possible? If not, please tell me how could I do something similar.

Tnaks.
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