Isobel, There are published algorithms that will do this - one of the advantages of the UTM projection is that it can be generated anywhere, with the zoning of the projection accounting for the necessary differences around the globe. Good software should be able to deal with UTM zones and hence work anywhere. The disadvantage of UTM is that other commerical mapping (including State) is more likely to use a local grid for the area concerned.
It may be possible to find free or shareware that will do the projection - one issue that needs to be addressed though is precision as a lot of the free code is limited in this respect and of course the desired spatial accuracy of subsequent statistical processes needs to be incorporated within this. Otherwise there is often software tailor made for specific countries, e.g., for the UK and Ireland that usually offers a higher precision. It depends on the source data and what you want to do with it - we work to sub-metre precision and this can be a problem. If any of the list need to pursue this further I have a contact who is renowned for his work on co-ordinate transformations in the aerial photography world and who would probably be able to advise. Martin ______________________________________ ArchaeoPhysica Ltd. Reconnaissance & Geophysics for Archaeology Telephone: +44 (0) 7050 369789 E-mail: [EMAIL PROTECTED] Website: http://www.archaeophysica.co.uk ______________________________________ This e-mail is intended only for the addressee named above and may contain confidential or privileged information. If you receive this e-mail by mistake please advise the sender and destroy it without further disclosure of its content. Unless otherwise stated no opinions expressed in this e-mail should be regarded as representative of any policy of ArchaeoPhysica Ltd. ----- Original Message ----- From: "Isobel Clark" <[EMAIL PROTECTED]> To: "Martin Roseveare" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Friday, October 24, 2003 4:06 PM Subject: Re: AI-GEOSTATS: geoR and memory > Martin > > > - convert your longitude > > and latitude data into a planar projection first > Do you have an algorithm that works everywhere in the > world? > > Isobel > http://geoecosse.bizland.com/whatsnew.htm > > ________________________________________________________________________ > Want to chat instantly with your online friends? Get the FREE Yahoo! > Messenger http://mail.messenger.yahoo.co.uk -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org
