A particle orbit, which is a projection of sensor movement to a plane, can be selected in the menu [View] -> [Particle orbit]. There are three choices, i.e. [Acceleration], [Velocity] and [Displacement].
If the data file has two or more channels, ViewWave initially assigns the first and second channels to the vertical and horizontal axes of the particle orbit graph.
Channels to be assigned can be selected in the [Channel] tab in the [Option] dialog box. If the data file has data of a single channel, the particle orbit is not available.