Since giving up smoking... ! locr BUG REPORT !

[schoolbusdriver]

Since giving up smoking last year, I've found that my energy levels have increased considerably. Instead of gasping for breath while walking up to the local shop for more filthy ciggies, I can now hike and scramble over even rough terrain without raising a sweat - although I'm still scared to stand on a wet grass slope within two feet of a sheer 100 foot cliff. 3 feet is Ok, as is a steep slope where I can see terra firma all the way to the bottom.

Adding all that to my interest in photography, and my desire to goetag my pics, I bought a GPS data logger which can tag the pics based on the time, and even display on google earth.

I've already written a progaram to read/write any exif tag (even create unspecified custom tags) and alter the "date created" and "modified" properties (including batch processing) in a variety of ways - including synchronising with the "Date Picture Taken" tag.

One thing I can't seem to find is a program to calculate the distance travelled based on the GPS data points - there could be several hundred on a long hike.

So, does anyone know of a freeware prog that calculates distance based on a series of NMEA GPS message strings or do I have to write my own ? I'm not really bothered about the precision loss due to changes in altitude.

Or do you think I'm too sad ?