How to get started with GPSPhotoLinker

Quick Start

1. Click Download Tracks and connect your GPS to your computer. Select your GPS reciever type, the serial adapter you used to connect and click download. If you have previously downloaded tracks, click Load Tracks and locate a GPX format track file. Once loaded, the program will indicate how many tracks with time/date information were found.
2. Click Load Photos and locate photos you would like to link to the track data.
3. Click Set photo time zone... and choose the appropriate UTC Offset (time zone) for the time stamp on the photos.
4. If you select one photo, standard mode will display the two track points closest in time to the time/stamp on your photo. The Preceding track point is the closest track point in time prior to the time stamp on the photo. Similarly, the Next track point is the closest track point in time after the time stamp on the photo. Although not a real track point, there is also a time weighted average latitude/longitude you can choose to save to the photo. Clicking Save to photo on any of these options will immediately save the latitude, longitude, city, state, and country to the photo.
5. Select the next photo and continue or use batch mode to automatically link all of the loaded photos.

Choosing a track point

Before saving a track point to the photo, consider a few things. Compare the time on the photo with the time on the track point. If the times are too far apart, that may indicate the photo was not really taken in that position. The distance between the three points is given as an aid to help you choose which is the appropriate track point, if any at all. The Time weighted average point uses the time on the photo to extrapolate a point between the two track points.