[Talk-us] [OSM-talk] Defective GPS trace

Serge Wroclawski emacsen at gmail.com
Fri Jan 1 15:31:10 GMT 2010

On Fri, Jan 1, 2010 at 9:14 AM, Steve Bennett <stevagewp at gmail.com> wrote:

> Well...ok. But in this case I have the aerial photography, so I can just
> trace it, once I know more or less where the path goes. I was just curious
> if there was a way to detect errors at the time - repeating every trace
> several times "just in case" would be pretty inefficient.

I don't know which photography you have, but oftentimes that can be
off significantly due to inaccuracy of the camera/gps, but also due to
warping issues.

You're really much better off getting multiple GPS points. You may
even find your GPS wasn't as off as you thought. :)

- Serge

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