Hi: I am a newbie using grid and lattice. I want to update a xyplot without redrawing and I was wondering if there is a way of adding a point to a pointsGrob ?
For example, take the example from the "R Graphics Book" page 218-219: grid.newpage() angle <- seq(0, 2*pi, length=21)[-21] x <- cos(angle) y <- sin(angle) xyplot( y ~ x, aspect = 1) Lets say I take the pointsGrob below: getNames() [1] "GRID.rect.748" "plot1.xlab" "plot1.ylab" "GRID.segments.749" [5] "GRID.segments.750" "GRID.text.751" "GRID.segments.752" "GRID.text.753" [9] "GRID.segments.754" "GRID.points.755" "GRID.rect.756" pg = grid.get("GRID.points", grep=TRUE) pg points[GRID.points.755] Is there a way I can add a point to pg (or "GRID.points.755") to update the xyplot without redrawing all the points ? If redrawing is obligatory, is there way of redrawing the least elements of the xyplot ? Searched for a long time but could not find anything, even if this seems like a fairly basic operation. I guess this may well go against the grid's package "philosophy" or "architecture" ? Thanks. Daniel. [[alternative HTML version deleted]] ______________________________________________ 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.