I would like to thank you for your reply. Yes I had this conversation of how to find the cells that are touched.
I did that with these two lines: temp<-(floor(cbind(seq(x[1],xr[1],by=0.01),lineeq(x,xr)))) #. cellid2 <-unique( floor(cbind(seq(x[1],xr[1], by=0.01), lineeq(x,xr)) ) ) # cell ids that are touched You can find in the picture below how the cells look like for a line that spans from (2,11) to (3,8) http://img824.imageshack.us/img824/9914/lineu.jpg In the picture attached you can see that there are some points missing denoted by * which I do not know how to find out. I need them to find the proportion a line gets into each cell. You mentioned something like "densified vertices of the line" but I am not sure what does it mean. In the picture are depicted the areas that I need to calculate somehow. Of course the easiest way would be to use some already implemented function which does not seem to exist. I would like to thank everyone that contributed to this so far. Best Regards Alex -- View this message in context: http://r.789695.n4.nabble.com/Linear-Integration-tp2956145p2964694.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
