Graph Plots terminology

The following definitions are used to explain creating and using graph plots.

Term	Definition
Active channel	A channel that is either selected or pinned
Channel	A stream of data that can be added to a graph plot
Channel cache	The amount of channel data stored either in memory or disk. The Cache memory limit (configurable at Preferences > Channel Cache > Cache memory limit ) controls the threshold when data is to be written to disk. The default size is 512 MB
Channel source	A selection that provides one or more data channels and includes: Vicon camera Prop, marker, or unlabeled reconstruction Subject or segment (labeling, solving or retargeting skeleton)
Channel type	A channel source may provide multiple data streams of different types, which may be selected from the dropdown menu on the Graph Plots toolbar
Component	One part of a channel data value
Dependent channel	A channel that is only available with a channel source selected (eg, object position)
Frame number	A number that increments sequentially for each frame of system data received
Gap	A time period of missing channel data (eg, because tracking was interrupted)
Independent channel	A channel that is available without a channel source being selected (eg, DataStream Output Latency)
Live mode	A mode that displays data from the connected live system
Pinning	This locks a channel on a graph plot even if the channel source is de-selected.
Review mode	A mode that displays data from the selected review clip
Sample	A set of channel component values, taken at a single point in time
Sample number	A number that increments sequentially for each channel sample received. Channels are sampled at the system frame rate, so the sample number is equal to the frame number.
Subplot	A subdivision of the graph plot containing one or more traces of the same type
Trace	The visual representation of a single component of a channel data stream on the graph plot