> -----Original Message----- > From: Dennis Murphy [mailto:djmu...@gmail.com] > Sent: Wednesday, November 16, 2011 11:22 AM > To: Andy Bunn > Cc: r-help@r-project.org > Subject: Re: [R] equal spacing of the polygons in levelplot key > (lattice) > > OK, how about this instead? > > # library('lattice') > levs <- as.vector(quantile(volcano,c(0,0.1,0.5,0.9,0.99,1))) > levq <- seq(min(levs), max(levs), length = 6) > levelplot(volcano, at = levs, > colorkey = list(at = levq, > labels = list(at = levq, > labels = levs) )) >
Whoa. Tricky. That's great. Thanks! > Dennis > > On Wed, Nov 16, 2011 at 10:27 AM, Andy Bunn <andy.b...@wwu.edu> wrote: > > > > > >> -----Original Message----- > >> From: Dennis Murphy [mailto:djmu...@gmail.com] > >> Sent: Tuesday, November 15, 2011 8:54 PM > >> To: Andy Bunn > >> Cc: r-help@r-project.org > >> Subject: Re: [R] equal spacing of the polygons in levelplot key > >> (lattice) > >> > >> Hi: > >> > >> Does this work? > > > > Thanks Dennis. > > > > This almost works. Is there a way to make the rectangles in the key > the same size? In this example five rectangles of the same area evenly > arrayed? Can the key be coerced into being categorical? > > > > The data I want to work with are not spatial but it occurs to me that > this is a common mapping task (e.g., in this example you might want to > label these colors 'low', 'kind of low', 'medium low', etc. or map land > covers or such.) I'll look at the sp or raster plotting equivalent. > > > > > > > > > > > > > >> > >> # library('lattice') > >> levs <- as.vector(quantile(volcano,c(0,0.1,0.5,0.9,0.99,1))) > >> levelplot(volcano, at = levs, > >> colorkey = list(labels = list(at = levs, > >> labels = levs) )) > >> > >> HTH, > >> Dennis > >> > >> On Tue, Nov 15, 2011 at 1:12 PM, Andy Bunn <andy.b...@wwu.edu> > wrote: > >> > Given the example: > >> > R> (levs <- quantile(volcano,c(0,0.1,0.5,0.9,0.99,1))) > >> > 0% 10% 50% 90% 99% 100% > >> > 94 100 124 170 189 195 > >> > R> levelplot(volcano,at=levs) > >> > > >> > How can I make the key categorical with the size of the divisions > >> equally spaced in the key? E.g., five equal size rectangles with > labels > >> at levs c(100,124,170,189,195)? > >> > > >> > Apologies if this is obvious. > >> > > >> > -A > >> > > >> > R> version > >> > _ > >> > platform i386-pc-mingw32 > >> > arch i386 > >> > os mingw32 > >> > system i386, mingw32 > >> > status > >> > major 2 > >> > minor 14.0 > >> > year 2011 > >> > month 10 > >> > day 31 > >> > svn rev 57496 > >> > language R > >> > version.string R version 2.14.0 (2011-10-31) > >> > > >> > ______________________________________________ > >> > 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. > >> > > > > > ______________________________________________ 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.
