Patrick,
Maybe I am misunderstood; PLEASE let me know if I understand anything wrong!
Basically, what you are trying to do is to find a suitable class or structure to hold all the information from the GPS for later use(just like the tool tip)?
If so, hopefully my following answers can give you some help!
Vertex is just a light weight structure which holds the longitude and latitude, so I think it is not suitable to hold information data onto it.
Feature is a decent structure for this task. For example, the information for GPS contains following:
Time: 20090629
DOP : “DOPValue”
SAT : “Sat”
Etc.
Then you can create a feature like this:
Feature feature = new Feature(new Vertex(0.0, 1.0), "FirstGPSdata");
feature.ColumnValues.Add("Time", "20090629");
feature.ColumnValues.Add("DOP", "DOPValue");
//etc
Any more questions just let me know.
Thanks.
Yale