I can think of a couple of ways you might be able to do this - but considering I haven't done something like this before it's a guess.

You can derive an interval in seconds I believe (referencing http://nathanw.net/2012/06/30/better-date-and-time-support-in-qgis-expressions-and-styles/) from the point data - I'm assuming you have date and time (or at least time).

You could connect the points with a line (that would give you distance).

I'm thinking this might be better accomplished in a database as opposed to a shapefile (assuming shapefile).

...and I think I've just given you the most abstract assumed non-answer ever.

Lemme think on this one a bit more. Hopefully someone has a practical answer.

Randy




On 08/17/2014 05:57 PM, [email protected] wrote:
Hi all,

I’m working on some point data that has been collected using a combine in an agricultural field. Trying to figure out a way to compare speed between the dropped points? I’m not sure how to start….can anyone help?

Thanks
Dean


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