[Taxacom] GPS units that record the time a waypoint was taken

Burkhalter, Roger J. rjb at ou.edu
Thu Mar 19 08:40:21 CDT 2009

Mikes comments are spot on. To me, accuracy is paramount. I always record the number of satellites, accuracy and time with my points. I don't know if my GPS unit will spit them out in a readable file, there is a place for me to type them in a comments field, but it's usually easier to record that info in a field notebook. We use the Delorme PN20/PN40 units mostly because of compatibility with the Delorme Xmap software, a poor mans GIS program that also allows us to download NAIP aerial images and overlay them on 7.5 minute topos.

Roger Burkhalter

Collections Manager, Invertebrate Paleontology

Sam Noble Oklahoma Museum of Natural History

University of Oklahoma


>> If the unit says that the accuracy is 20 m, but over a long period at

>> the same point (or repeatedly moving away and coming back to it), it

>> only fluctuates by 3 m, does that mean the accuracy is really 3 m?


>See http://en.wikipedia.org/wiki/Accuracy_and_precision



>Mike Dallwitz

>Contact information: http://delta-intkey.com/contact/dallwitz.htm

>DELTA home page: http://delta-intkey.com

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