Perhaps have a look at the sp package and especially the over function. Br. Frede
Sendt fra Samsung mobil -------- Oprindelig meddelelse -------- Fra: Leonid Shvartser Dato:27/03/2014 20.27 (GMT+01:00) Til: r-help@r-project.org Emne: [R] index polygons Hello, I need to compare a polygon with a set of other polygons. I'd like to index polygons with a grid in order not to compare definitely distant ones. How can I do this? I need 1. Transform polygons to cells 2. Find cell neighbors (defined cell distance) for a polygon Thanks Leonid The information contained in this communication is inten...{{dropped:11}} ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.