Graphing your data

In the Graph Plots view, you can display and select your data (for example, x, y, and z components of a marker trajectory) in graph format, plotted against time – see About the Graph Plots view.

To graph data in a Graph Plots view:

If you do not currently have a graph displayed in a Graph Plots view:

1. In the Workspace, select the Graph Plots view.

   

   Important: If the Graph Plots view displays No active channels or a similar message, make sure you either have a live system connected (see Prepare your Vicon Tracker system) or are in review mode (see Review captures).

2. To plot a channel type, select the relevant channel. You can choose to display an independent channel or a dependent channel. If you choose a dependent channel, you must also select a channel source which can be:

   • An analog device in the System panel
   • An object in the Tracking panel

   • A marker or object in the 3D View

   • A camera in the System panel or Cameras view.

     At the top left of the Graph Plots view, click the channel types dropdown menu to display a list of channel types:

     

     Tip: Any channel type listed in white is available for the selected channel source. If a channel source is not selected, only independent channel types are available for viewing in the current graph plot.

     Relative measurements require the selection of two or more channel sources.

     For more information about channel types, see Graph Plots reference.

3. Change the displayed data within the active channel using additional controls in the Graph Plots toolbar. For more information, see:
   
   • Change the type of graphed data (eg, derivatives)
   • Change the layout of graphed data

   • Change the scale of graphed data

     
     

Toadd a graph trace to a subplot in Graph Plots:

If you already have at least one channel active in a Graph Plots view and want to add a trace to a subplot:

1. Make sure you have pinned all the channels that you would like to keep (see Manage channels.

   If a channel is not pinned, it will be removed from the Graph Plots view.

2. When you have pinned all the desired channels, you can:

   • Add a trace to the existing graphs (that is, adding the position data of Object2 to an existing graph of position data of Object1).
   • Change the processing applied to the active channel type by selecting one of the graph plot modifiers (see Change the type of graphed data).
   • Select new channel type from the Channel Types menu.

   • Select a new channel source by clicking on the device, object, or marker from the relevant panels or views.

3. If you want to keep the newly added channel and add additional channels, you must pin it.

Customize graph plots

To customize the data displayed in the Graph Plots view, first choose your data (see Change the type of graphed data) and then make sure the desired channels are pinned (see Manage channels).

When you have chosen the required channel type(s) to plot, you can customize the way your data is displayed by selecting options from the Graph Plots toolbar to make the following changes.

• Change the layout of graphed data
• Change the scale of graphed data

As you customize your graph plots, refer to Graph Plots mouse actions to understand how to control the full behavior of the Graph Plots view.

Manage graph plots

After you have added all the desired channels and customized the layout of the Graph Plots view, you may want to:

• Lock the current selection of channels using the Lock channel selection button. When enabled, if you click potential channel sources, channels are not added or removed.
• Save the current Graph Plot layout (including pinned channels) or load a previous Graph Plot layout using Graph Settings.

Channel lock

When the Lock channel selection button is activated, selecting or de-selecting channel sources does not add or remove graph channels to the current Graph Plot view. You can still change the layout of your Graph Plots but not the channels themselves (see Change the layout of graphed data).

Graph settings

Graph settings enable you to save and load a specific layout within the Graph Plots view. This includes any channels that are pinned (even if they are not present in the current session) or locked using the Lock Channel Selection button. It also includes the settings specified within the graph plot modifiers (Change the type of graphed data).

Graph settings only apply to the Graph Plot view and are a subset of the overall View settings (see Customize the Tracker user interface). This means:

• You can load different Graph Plot layouts while maintaining the current Tracker layout.
• Loading a View setting will load the graph settings that were specified as a part of that View configuration.
• Graph settings do not have a specific AutoSave feature but are included as part of the View settings AutoSave (see Tracker fundamentals).

If you want to use your current Graph Plot layout in the future, use the Graph Settings menu. From here you can open the Manage Graph Settings dialog box, where you can import, save or delete Graph Settings files.

To save a new graph setting:

• On the Graph Plots toolbar, click Graph Settings , then click Manage and click the Save button.

  Tip
  Before saving your graph settings, remember to pin all desired channels in a Graph Plots view or use the Channel Lock.

To load a previous graph setting:

• On the Graph Plots toolbar, click Graph Settings and either select from the list or click Manage and import the required setting.

Export data

To export the current graph channel data to a CSV file, click the CSV Export button . For more information, see Exporting data to CSV.