> The idea is that you're modeling an irregular shaped object, a body of > water, a river or estuary, say. It's fairly common practice to use a > grid squished and rotated so that the main flow is along one axis, and > the other axis spans the flow in most spots. So there is a single > transformation that gets you from a rectangular grid to the shape of > your estuary, but there isn't a tidy analytical way to describe it, like > there is with a map projection. Instead there is an x and y for each > grid point, and the cell dimensions vary all over the place. > > spplot, in the sp package seems almost to do what I'm after, but I can't > figure out if there is a way to invoke it that does what I want, or if > I'm barking up the wrong tree.
Ask on R-sig-geo? I haven't seen a query from you come through over there... and that would be the logical place to ask questions about the sp package and similar bits... --e ______________________________________________ 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.