R help - Jun 2014 - Map insets and par(usr) values

This is in reference to the post here by Ray Brownrigg:
http://r.789695.n4.nabble.com/inset-one-map-on-top-of-another-map-td3848752.html

using this code with the maps package:

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)

*MY issue*: I can't figure out how to determine which values to specify for
par(usr=c(______))

I can get the values of the plot area using

par("usr")

But I don't know how to resize the second map or move it to another
location. When I adjust the values specified it just seems to stretch
the second map out.

Here is a basic idea of what I am trying to do

library(maps)
map('state', xlim = c(-86.5,-74), ylim= c(32,41.25), col =
"white", fill T)

par(usr=c(-216, -66, 24, 144))
par(xpd=T)

map("state",  xlim = c(-105,-70), ylim= c(25,48), add = T)

---but I would like the US map to be larger and moved to the right

Thanks!

Carly

	[[alternative HTML version deleted]]

Please don't post HTML email.. we don't necessarily see what you see
when you do that. Read the Posting Guide for more list etiquette.

Have you played with the "usr" coordinates? Have you read the help for
the par function?
The par(usr=...) call is telling base graphics what the x and y coordinates of
the corners of the graphics window should be. If you subtract the same number
from x1 and x2 you will shift the inset to the right because the coordinates of
the left edge of the window will be further to the left of the map and the right
edge of the window will be closer to the map on the right.

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On June 8, 2014 9:29:02 PM MDT, Carly Muletz <craemuletz at gmail.com>
wrote:
>This is in reference to the post here by Ray Brownrigg:
>http://r.789695.n4.nabble.com/inset-one-map-on-top-of-another-map-td3848752.html
>
>using this code with the maps package:
>
>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)
>
>*MY issue*: I can't figure out how to determine which values to specify
>for
>par(usr=c(______))
>
>I can get the values of the plot area using
>
>par("usr")
>
>But I don't know how to resize the second map or move it to another
>location. When I adjust the values specified it just seems to stretch
>the second map out.
>
>Here is a basic idea of what I am trying to do
>
>library(maps)
>map('state', xlim = c(-86.5,-74), ylim= c(32,41.25), col =
"white",
>fill >T)
>
>par(usr=c(-216, -66, 24, 144))
>par(xpd=T)
>
>map("state",  xlim = c(-105,-70), ylim= c(25,48), add = T)
>
>---but I would like the US map to be larger and moved to the right
>
>Thanks!
>
>Carly
>
>	[[alternative HTML version deleted]]
>
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