# Re: [R] plotting magnitude

From: Jim Lemon <jim_at_bitwrit.com.au>
Date: Wed, 19 Dec 2007 22:05:20 +1100

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
>
Hi,

What you might want is something like this:

library(maps)
data(world2MapEnv)
map("world2",xlim=c(110,160),ylim=c(-45,-10)) axis(1)
axis(2)
library(plotrix)

```draw.circle(155,-30,1,col="red")
draw.circle(155,-32,1.2,col="blue")
draw.circle(153,-34,1.5,col="green")

```

where 1, 1.2, 1.5 are the relative sizes of catch. Oh, and you would probably want the North Atlantic part of the map...

Jim

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