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.
Any suggestions?
I am using R for Windows 2.13.0
and the maps package version 2.1-5.
Jean
`·.,, ><(((º> `·.,, ><(((º> `·.,, ><(((º>
Jean V. Adams
Statistician
U.S. Geological Survey
Great Lakes Science Center
223 East Steinfest Road
Antigo, WI 54409 USA
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