Will, Shoul I get the 2008 mapsource software with that GPS?
On Mar 5, 8:54 am, Will Fell <[email protected]> wrote:
> Hey....I am not arguing that you're not right, we have always used
> wgs84 at work. We started with trimble and corvalis tech units before
> migrating to Garmin which I also use for my personal use. Alll the
> photos and DRG maps we used were rectified to wgs84 and projected to
> UTM coordinates. Any outside data we brought in could be
> "reprojected" (or whatever the word is) with the arcgis program and
> the MN DNR garmin extension. At home I use mapsource topos and google
> earth which both use wgs84 and I just assumed most folks did, so when
> they wanted the coordinates I didn't ask what datum they wanted. If
> you need a different datum, we can change it fairly simply.
>
> thanks....
>
> On Mar 5, 2:07 am, "Paul Jost" <[email protected]> wrote:
>
>
>
> > Don,
>
> > Garmin and Magellan consumer GPS units default to WGS84. But many users,
> > me included, change it right away to match the maps that we are working
> > with. I've bounced between NAD83 and NAD27 frequently. I'm sure that some
> > others have changed their datums, too, although most don't even know what
> > they are and leave it alone.
>
> > PJ
>
> > ----- Original Message -----
> > From: DON BERTOLETTE
> > To: [email protected]
> > Sent: Wednesday, March 04, 2009 11:22 PM
> > Subject: [ENTS] Re: GPS
>
> > Will-
> > Well, that's sort of true...there are quite a few places that still have
> > NAD 27, NAD 83 topos and match their GIS's to that NAD.
>
> > Are you sure that all civilian GPS's are by default assigned the wgs84
> > datum?
>
> > If you are correct, then I stand corrected and shouldn't have been a
> > worrywort about not everybody being on the same datum.
> > -Don
>
> > > Date: Wed, 4 Mar 2009 20:25:43 -0800
> > > Subject: [ENTS] Re: GPS
> > > From: [email protected]
> > > To: [email protected]
>
> > > The standard datum on GPS units is wgs84. Datum comes into play with
> > > maps which are referenced in a variety of datums, in the us, NAD 27
> > > and NAD 83. As the GPS was originally developed by the military, they
> > > use wgs84 which is a standard worldwide and is for all practical
> > > purposes identical to the NAD84 (north america datum).
>
> > > On Mar 4, 10:01 pm, Larry <[email protected]> wrote:
> > > > Ed, Thanks for the link. Larry- Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -
>
> - Show quoted text -
--~--~---------~--~----~------------~-------~--~----~
Eastern Native Tree Society http://www.nativetreesociety.org
Send email to [email protected]
Visit this group at http://groups.google.com/group/entstrees?hl=en
-~----------~----~----~----~------~----~------~--~---
