When you have made a measurement with GPS positions included in your data, it should be possible to report or view a measured parameter on these GPS positions. It should be possible to give different colours to the parameter values. E.g. I have made some vibration measurements on a tram with GPS positions. When it is possible to give low vibrations levels a green colour and high levels a red colour you can easy spot bad sections of track. It is combining two functios DIAdem already has: GPS maps and 3D characteristic diagram.