Creating Large ECWs - RAM requirements

[Adam Inglis]

Hi All,   I'm running into problems creating an 18Gb greyscale ECW air photo mosaic.  I'm running ERM 6.3 on Win2000 with SP2, Dual 1.9Mhz Athlon processors and 1Gb of 266Mhz DDR RAM.  I have 15 greyscale ECW files compressed at 1:15 (they total 17.1 Gb) that represents 263Gb of uncompressed data.  I want to combine these files into one ECW file compressed at 1:15.  I've tried running the compression several times, but in every case my PC freezes up.  I have created mosaics RGB mosaics of this size before on slower machines, so I'm fairly confident that I have the necessary hardware.  Any suggestions would be appreciated.   Regards,   Adam   ============================ Adam Inglis Remote Sensing Specialist Spatial Mapping Ltd. 1655 Knight Avenue Victoria, BC, Canada V8P 1L4   http://www.spatialmapping.com http://www.resmap.com email: [EMAIL PROTECTED] phone: 250 519 0294 fax: 250 519 0294 ============================