Tuesday, May 4, 2010

Track Log Storage on Garmins...

Reply to Which Handheld GPS??

1SDMan posted a reply:

Here's an answer on the Garmin tracks:
• Active tracks have elevation and timestamps. They are the most 10,000 most recently recorded position points. Active tracks will either overwrite the oldest points if set to wrap or will stop recording and display a message if you set it to fill.
• Saved tracks are created manually by the user from the keypad. Saved tracks are 'compressed' by the unit to have under 500 trackpoints and have neither elevation nor timestamps and have fewer stored trackpoints.
• Optionally, and this is the way your unit should be set up, the unit can write tracks to the removable SD memory card as GPX files. These files are immune from the limit of 10,000 points so they always have timestamps and altitudes. These files can be read by your computer, but the GPS itself will never display them.
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So, if you have a Garmin with a SD card, and set it correctly, it will make a very good unit for geo-tagging photos. More expensive than a standard logger, but will have the advantage of being waterproof, displaying your location in case of emergency, and able to show maps. An eTrex Vista HCx is about $200.

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