Converting tracks from a GPX track to a CSV table or some other format is relatively easy, but I'm looking to go the other way. I have a table of point locations logged with a handheld GPS, with timestamps. I need to convert them to a GPX file with a tracklog containing those points so they can be used with some other software to geotag some photos. I can convert them to GPX waypoints easily enough using QGIS/GDAL, but not to a GPX tracklog, the timestamps are lost.
Here's the header of my CSV: