[R] : put grids in a plot at specific x points

Hi dear all! I wonder if anybody can help me with this: I have a plot: allchr - read.table(allchrtog.txt, header=F) attach(allchr) names(allchr) [1] V1 V2 V3 V4 plot(V1,V3, type=n) lines(V1,V3) and I want to add grids to the plot but just at specific x points. So for example, the first

Re: [R] : put grids in a plot at specific x points

grid refers you to abline whenmore fine tuning is required, i.e. when the situation is not a regular grid. ?abline abline(v=286.16, lty=dotted) If you had a vector, vec, then this should do the trick: abline(v=vec, lty=dotted) -- David Winsemius On Mar 16, 2009, at 4:25 PM, Laura

Re: [R] : put grids in a plot at specific x points

Thank you! that worked nicelly! Laura 2009/3/16 David Winsemius dwinsem...@comcast.net: grid refers you to abline whenmore fine tuning is required, i.e. when the situation is not a regular grid. ?abline abline(v=286.16, lty=dotted) If you had a vector, vec,  then this should do the