On Sun, Aug 23, 2009 at 01:08, Itzchak Raiskin <itzchak.rais...@gmail.com>wrote:
> Hi > I want to use SQLite in a GIS application where I create a database > containing terrain data (coordinates, height). > I would like to query this database with start and end points of a line and > get a vector with all heights point along this line. > I can, of course create a query for each point along the line, but this > will > be very time consuming as I have hundreds of lines with hundreds of points. > Any suggestions? > The "rtree" extension may be of use to you. http://www.sqlite.org/cvstrac/fileview?f=sqlite/ext/rtree/README More information is available here: http://en.wikipedia.org/wiki/R-tree Derrell _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
