On Mon, Jun 28, 2004 at 06:48:23AM -0400, IvorW wrote:

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-----Original Message----- From: openguides-dev-bounces@openguides.org [mailto:openguides-dev-bounces@openguides.org]On Behalf Of Jo Walsh Sent: 28 June 2004 00:42 To: OpenGuides software developers Subject: [OpenGuides-Dev] locator plugins

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an additional piece of data by way of the ellipsoid. This needs to be prompted for in the setup, and held in the config file.

i kind of assume it will always be wgs84 - 23 for Geo::Coordinates::UTM - or nad83 which is centimetres of difference. this is what gps, the big mapping sites, etc use

• this could be a default config option without a prompt?

I thought that you needed different ellipsoids for different parts of the globe. wgs84 or nad83 may work well for California, but I doubt if they would for Europe.

Ireland works on a Modified Airy Ellipsoid afaik, so I think you're right in saying it needs different ellipsoids for different areas of the globe.

What a miss-shapen world we live on.

:)

Stephen