Dear R users, I'm trying to extract from a given matrix (GROUP) the coordinates of the vertices of the different groups (i.e. 3, 7, 1 . . .) to plot the polygons to delineate the area in which each group "wins" and colour it diferentially. I can make a simple point plot, but I would like to add polygons with full colored area. The example is with a 5x5 matrix, but I'm working with 500 x 500 matrix, so hand work is difficult, Any suggestion will be welcomed. Nrep=5 GROUP<-matrix(c(3,3,3,3,7,3,3,3,3,7,1,3,3,3,7,1,3,3,3,7,1,1,4,4,0),Nrep,Nrep) column<- seq(1, 5, length=Nrep) row<- seq(0,10,length=Nrep)
colnames(GROUP)<- round(column,3) rownames(GROUP)<- row GROUP grupovec<-as.vector(GROUP) flushvec<-rep(column,rep(Nrep,Nrep)) MORvec<-rep(row,Nrep) plot(flushvec,MORvec, col=grupovec, pch=19) polygon() # ???????????????????????????????????? Thanks Angel ______________________________________________ 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.
