Kirk, Your method #1 is straightforward and should go fast. Do you need all 100 columns?
A 3rd way is to make sure that the file has a column to serve as a "category/cat" field (integer), save it as a dbf file from Excel and use v.in.db to create the points. This has the advantage that you can name the fields more easily. You would then need to reproject it into UTM. I'd be a little nervous about trying to convert from latlon to UTM within a database. GRASS has routines specially designed to do accurate reprojection. Michael On 7/30/07 1:59 PM, "Kirk Wythers" <[EMAIL PROTECTED]> wrote: > Greetings everyone, > > I was just handed a 26,000 row by 100 column excel file which > contains lat long coordinates of individual site locations. I need to > project it onto a rater image (already in a grass utm location). > > Two ideas come to mind... one is to read it into a grass lat long > location with v.in.ascii and then reproject onto the utm location, > the other is to read it into postgis and convert the lat long columns > to meters, then import the postgis layer. Any suggestions as to > advantages or disadvantages to either approach? > > How do most of you handle these situations? > > Best Regards, > > Kirk > > > Kirk R. Wythers, Research Fellow > Dept. of Forest Resources > University of Minnesota > 1530 Cleveland Ave N > Saint Paul, MN 55108 > tel: 612.625.2261 > email: [EMAIL PROTECTED] > > > > > __________________________________________ Michael Barton, Professor of Anthropology Director of Graduate Studies School of Human Evolution & Social Change Center for Social Dynamics & Complexity Arizona State University phone: 480-965-6213 fax: 480-965-7671 www: http://www.public.asu.edu/~cmbarton _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
