Ok I know you specially ask for a direct route, but if you can generate a dem from your data (don't know of a program for that!) then there is dem2topo which will create contours.

You might also like to checkout the code from free-map.org.uk as that does on the fly contour generation.

Barry

- www.nearby.org.uk - www.geograph.org.uk - www.trigtools.co.uk -

----- Original Message ----- From: "Christian Nold" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, January 21, 2006 9:17 PM
Subject: [Geowanking] contour rings from GPX


Hi ,

 Hi there I have a large number of GPX files that I would like to use
 for creating filled contour rings of an area.

Ideally I would like to use the files as they are and not have to
convert them to X,Y,Z and it would be fantastic if I could export the
contours as vectors.

Could somebody please recommend me some easy to use - open
source/freeware (windows) programs that could do this?

Any help would be really appreciated!

--
Thanks
Christian


Web:       www.softhook.com
Web:       www.biomapping.net

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