Hello Pierre ;-)


What's the purpose of using options split and more in plot() function?


Thanks,


"ex same class in school" Mathieu

2011/6/8 Pierre Roudier <pierre.roudier@gmail.com>

> Hello Aritra,
>
> If you want just the CRESS_ID column to be plotted, try:
>
> spplot(nc, zcol = "CRESS_ID", col.regions = heat.colors(64))
>
> If you want to have both maps on the plot:
>
> p1 <-  spplot(nc, "CRESS_ID", col.regions = heat.colors(64))
> p2 <-  spplot(nc, "both", col.regions = sample(rainbow(nboth)))
> plot(p1, split=c(1,1, 2,1), more=TRUE)
> plot(p2, split=c(2,1,2,1), more=FALSE)
>
> HTH,
>
> Pierre
>
> 2011/6/9 Aritra Sengupta <aritra.sourav@gmail.com>:
> > Hello,
> >
> > I am trying to plot the map of NC and using a color scheme. I have done
> that
> > using spplot().
> >
> > Here is a code (reference: Introduction to the North Carolina SIDS data
> > set (revised), Roger Bivand, April 12, 2011)
> >
> > library(sp)
> > library(maptools)
> > library(spdep)
> > nc_file <- system.file("etc/shapes/sids.shp", package = "spdep")[1]
> > llCRS <- CRS("+proj=longlat +datum=NAD27")
> > nc <- readShapeSpatial(nc_file, ID = "FIPSNO", proj4string = llCRS)
> >
> > nc$both <- factor(paste(nc$L_id, nc$M_id, sep = ":"))
> > nboth <- length(table(unclass(nc$both)))
> > spplot(nc, "both", col.regions = sample(rainbow(nboth)))
> >
> > Now I want to have the county index (CRESS_ID in nc) for each county,
> > plotted on the same map. I have not been able to figure out how to do it
> :(
> >
> > Any help/suggestion will be greatly appreciated.
> >
> > Thanks.
> >
> > -Aritra
> >
> >        [[alternative HTML version deleted]]
> >
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> >
>
>
>
> --
> Scientist
> Landcare Research, New Zealand
>
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