It seems that I had overlooked the viability of the NLC data available from the USGS. It is available at the link in Mr. Shields response below.This data is 30m data, most of which was compiled in the early 90's from LANDSAT data. It's pretty good and they will be coming out with a 2000 data set some time next year. The data is downloadable in a gz compressed binary flat file. They aren't great about publishing the format for it, but it is fairly simple to get into MI. Each bin file has an associated readme file that gives the projection, and NW and SE eastings and northings along with a classifiaction key and an accuracy statement. The olny problem is that you get the whole state in one big compressed bin file. Some of these things are huge so get your DSL ready. I wrote a small VB utility to create 30m x 30m rectangles around each point in MIF files breaking each bin file into 1 km by n rows chunks. Basically it breaks each state into 1 km wide vertical strips and makes a new MIF file for each strip. It also tosses out all the 0 values of the bounding rectangle that don't fit within the state so you only get "valid" data. I'll convert the utility to an MBX eventually, but it was easier to create in VB as I needed to do this quickly. If anyone is interested I can send the VB utility as is now. Just send an e-mail. Cameron Crum "Timothy M. Shields" wrote: > Cameron, > > When you refer top the "old USGS stuff" are you talking about the 30-meter MRLC > data found at: > > ftp://edcftp.cr.usgs.gov/pub/edcuser/vogel/states/ > > I was under the impression that this was pretty accurate. > > Tim > > Cameron Crum wrote: > > > A little off topic, but does anyone know where I can get some fairly > > good and recent LULC data for a decent price? I can get high res > > satellite derived stuff, but it it's super expensive, on the order of > > $2.45/sq km on the high end. The old 250k LULC stuff from the USGS just > > isn't cutting it. It's too old and too incorrect in most places to do > > much good. > > > > TIA, > > > > Cameron Crum > > Wave Concepts International, Inc. > ~~~~~~~~~~ Advertisement ~~~~~~~~~~~ Quick DOQQ Aerial Photos - Lower Price, Faster Delivery LAND INFO offers full coverage of DOQQ aerial photos, priced lower and delivered faster than the USGS and other providers. LAND INFO also offers feature extraction from the photography. Visit http://www.landinfo.com/directions.htm for complete details. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _______________________________________________________________________ List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MapInfo-L" in the message body.
