Did some experimenting this morning and here is what I found...
I am using EasyGPS 1.1.6 and a Garmin Etrex Venture.
Problem: waypoints downloaded from
www.geocaching.com are not being
transfered to GPS unit accurately. May be a rounding problem.
Settings:
EasyGPS set on COM2, model - eTrex (vista, legend, venture), coord - Deg,
Min.Min
GPS unit: WGS-84, Garmin protocol
Example1: load this cache point into EasyGPS
<
http://www.geocaching.com/seek/cache_details.asp?ID=270> coordinates show:
3346.201 -11151.943. After sending the waypoint to GPS, coordinates on GPS
show 3346.200 -11151.942. Appears there is a rounding error either in
EasyGPS or my GPS unit.
Example2:load the following XML file
-----------------------------
<?xml version="1.0"?>
<gpx version="1.0" creator="Snaptek -
http://www.azgeocaching.com">
<wpt lat="33.77001" lon="-111.86571">
<name>GC010E</name>
<cmt>Bob Renner</cmt>
<desc><![CDATA[CONE MOUNTAIN]]></desc>
<url>
http://www.geocaching.com/seek/cache_details.asp?ID=270</url>
<urlname><![CDATA[Cache Details]]></urlname>
<sym>Geocache</sym> <type><![CDATA[Active]]></type>
</wpt>
</gpx>
------------------------------
The coordinates in EasyGPS show the same as example 1, 3346.201
-11151.943. After sending waypoint to GPS, coordinates on GPS show
3346.201 -11151.943. This is correct!
This is the strangest part, in my GPS (from the original d/l of the entire
state of AZ cache points) the point for GC010E was 3346.222,-11151.969.
This accounts for being approx 300 feet off.
So I cleared all the waypoint out of the GPS unit and reloaded them. THIS
TIME, they (GC010E, and the others I checked) are correct, sort of. They are
off by the rounding condition explained above.
My best guess is that the transfer was not accurate from EasyGPS to my GPS
unit, but I can't repeat the problem so I can't confirm which is the
problem.
PS- I sent the above message to EasyGPS support. Will let everyone know if
they reply.
--
Karl Smith +-+ Threadhead
threadhead@mac.com
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