> > How can I get the value of the aspect ratio that is used in > a lattice > > plot? In a levelplot for instance, the native units per cm of my x > > and y axes are different, and I need to know the aspect > ratio so that > > I can correctly plot vectors. I know how to set the aspect in a > > high-level lattice function but I can't quite figure out how to get > > it. I would like call to levelplot() without printing > anything, get > > the aspect ratio, use it to create my vector arrows, then call > > levelplot() again with print() to create the final figure. > > Your question doesn't necessarily have a well defined answer, > because the aspect ratio may be computed only on printing > (and not even then, as the aspect ratio may change after > printing if you resize the device). In fact, this is the > default behaviour (aspect = "fill").
Thanks for the help, Deepayan. Yes, I guess what I am looking for is the actual numerical value for aspect.ratio that is used when aspect = "fill". My device is a pdf and I don't resize it. Could I execute the whole plot, including printing it, while saving the aspect.ratio that was used, then create the plot again? Scott Waichler ______________________________________________ [email protected] 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.
