Tim: Lets assume that your raster data represent a single continuous layer, then there are three possibilities.
1. Generalize your raster data over broad areas to make overview layers, and switch layers as you zoom in or out, e.g., satellite image -> SRTM -> Air photo. 2. Compression. MrSID or ECW (free for smaller files). You loose a little in detail but the images are 1/10 to 1/20 of the originals but still have enough detail. 3. Tiling. I've been able to tile ~200 1:50,000 grey scale topo maps and use them on a Celeron lap top without too much difficulty. Regards Patrick -----Original Message----- From: Tim Smith [mailto:[EMAIL PROTECTED] Sent: Monday, July 12, 2004 9:41 AM To: [EMAIL PROTECTED] Subject: MI-L Large raster maps Hi List, This goes back to a question I asked before, but just want to clear a few things up. I have loads of raster data (20GB). Can MapInfo handle a 20GB raster image? If not, could it handle, say, 40 500Mb files? I'm still trying to find out some information about efficient methods of using lots of raster data with MapInfo. Cheers Tim Smith --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 12552 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 12556
