Thanks! I'd seen this sort of trick mentioned in places, but didn't twig what it did. This is exactly what I was looking for.

James

On 19/4/11 7:04 AM, Greg Snow wrote:

tmp1<- par('usr')

--
James D Annan jdan...@jamstec.go.jp Tel: +81-45-778-5618 (Fax 5707)
Senior Scientist, Research Institute for Global Change, JAMSTEC
(The Institute formerly known as Frontier)
Yokohama Institute for Earth Sciences, 3173-25 Showamachi,
Kanazawa-ku, Yokohama City, Kanagawa, 236-0001 Japan
http://www.jamstec.go.jp/frcgc/research/d5/jdannan/

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