[R] plotting magnitude

[Dylan Beaudette]

On Tuesday 18 December 2007, dkowalske at umassd.edu wrote:
> I am plotting fishing vessel positions and want these points to be
> relative in size to the catch at that point.  Is this possible? I am just
> begining to use R and my search of the help section didnt help in this
> area.  Heres what Im using so far
>
> xyplot(data$latdeg~data$londeg |vessek , groups=vessek,
> xlim=rev(range(69:77)),ylim=(range(35:42)), data=data,
> 	main=list ("Mackerel catches", cex=1.0),
> 		ylab="latitude", notch=T, varwidth=T,
> 		xlab="longitude", cex.axis=0.5,)
> any info would be appreciated
>

how about scaling your plotting symbols by the sqrt() of their value. or 
see ?bubble in the gstat package.

cheers,

Dylan


-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341