Thank you, Ray! That worked. Thank you also, Yihui. I tried your subplot() suggestion, but couldn't get it to work with a map() on a map()
Jean Ray Brownrigg <ray.brownr...@ecs.vuw.ac.nz> wrote on 09/27/2011 07:26:34 PM: > > On Wed, 28 Sep 2011, Jean V Adams wrote: > > I want to overlay a small inset map on top of another map, but I can't > > figure out how to do it. > > For example, here are two different maps: > > > > # map 1 - Ohio > > map("state", region= "ohio") > > > > # map 2 - US with Ohio darkened > > map("state") > > map("state", region="ohio", fill=T, add=T) > > > > I would like to add map 2 as a small inset in the corner of map 1. > > I have tried: > > > > map("state", region= "ohio") > > par(new=TRUE, mar=c(3, 3, 15, 15)) > > map("state") > > map("state", region="ohio", fill=T, add=T) > > > > but this seems to erase map 1 and replace it with a full size version of > > map 2. > > > > I can successfully overlay an unrelated plot using similar code: > > > > map("state", region= "ohio") > > par(new=TRUE, mar=c(3, 3, 15, 15)) > > plot(1:10, 1:10) > > > > So, there must be something about the maps() function that I'm tripping > > over. > > I think the problem is that map() 'insists' (in some sense) on a > clean frame so it can get > the aspect ratio right. > > > > > Any suggestions? > > > How about something like: > map("state", region= "ohio", xlim=c(-85, -80), ylim=c(38, 42)) > par(usr=c(-216, -66, 24, 144)) # you should be able to > 'automate' this calculation > map("state", add=T) > map("state", region="ohio", fill=T, add=T) > > HTH > Ray Brownrigg > > > I am using R for Windows 2.13.0 > > and the maps package version 2.1-5. > > > > Jean > > > > > > `�.,, ><(((�> `�.,, ><(((�> `�.,, ><(((�> > > > > Jean V. Adams > > Statistician > > U.S. Geological Survey > > Great Lakes Science Center > > 223 East Steinfest Road > > Antigo, WI 54409 USA > > [[alternative HTML version deleted]]
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