I have GPS tracks of ocean drifters that I would like to animate with georegistered satellite images at specific time intervals. The objective is to show people how NOAA combines satellite observations and data collected in the ocean using drifters.
I can easily convert lon, lat, and time data into image coordinates and frame numbers, but I would like to know how to use these values to set position and frame number properties. I see how to set position properties using expressions, but I don't see how to tie those properties to specific key frames or frame numbers.
This would be my first time implementing a project using expressions, so I would appreciate as thorough of a response as possible.
Thank you