Hello everyone,
I have some difficulties on controling the margin of a plot.
For example, the following code from the help of maptools:
library(maptools)
xx <- readShapePoly(system.file("shapes/sids.shp", package="maptools")[1],
IDvar="FIPSNO", proj4string=CRS("+proj=longlat +ellps=clrk66"))
plot(xx, border="blue", axes=TRUE, las=1)
There is a lot of white margin on the bottom and top of the plot and I
want to get rid of it. I used option "usr", but it does not make any
change.
plot(xx, border="blue", axes=TRUE, las=1,usr=c(-85,-75,33,39))
par(usr=c(-85,-75,33,39))
plot(xx,border="blue",axes=T,las=1)
Option "ylim" does not work either.
Anyone has any idea how to do it?
Thanks a lot.
Best,
Shengde Liang
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