Page History: Tracking Monitor Element

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Page Revision: 2016/05/05 13:50

	New Element
Info
Category:			AddIn:	Base Elements
Creator:	OkazoLab Team		Scope:	Parent Event
Owns Snippets:	no		Usage:	Presentation Screen,Status Screen, Code snippets

The element allows/is capable of doing something in experiments

Actions aligned with epochs of the parent event ¶

Epoch	Actions
After experiment onset	The element ...
Event rendered
Before event onset
After event onset
Control loop step	The element ...
Before event offset
Before experiment offset	The element ...

Properties ¶

Generic Properties ¶

Name	Property description	Constraints	Type	Upon change
Plot Settings
Plot Title	Normal..	String
Show Gaze Positions	Normal..	Boolean
Gaze Line Color	Normal..	stColor
Gaze Line Thickness	Normal..	Double
Show Velocities	Normal..	Boolean
Velocity Line Color	Normal..	stColor
Velocity Line Thickness	Normal..	Double
Show Gaze Event	Normal..	Boolean
Saccade Event Color	Normal..	stColor
Fixation Event Color	Normal..	stColor
Show Velocity Threshold	Normal..	Boolean
Threshold Line Color	Normal..	stColor
Results
Reset Plot Now	Runtime command that resets the plotted data. Assign 'true' in the snippets to execute the command.	WriteOnly..	Boolean
XAML Velocity Plot	Returns a live XAML control that can be used for direct binding to the Content property of the XAML ContentControl element, e.g. ContentControl with a generated staircase plot can be added to the status screen or to the XAML Layout element.	Status..	UIElement
Save GazeVelocity Plot Now	Assign a fully specified filename to save the generated plot to a file at runtime	WriteOnly..	String
Preview GazeVelocity Plot	Open a window with the gaze-velocity plot preview	Design Time..	clDesignAction
Gaze Processing
Radar Provider	Defines which of the radar providers is used for positional input in this event. In each experiment, the radar providers includes the system mouse and all tracker elements. The selected radar provider controls the Radar Point property and input to the AOI elements in this event. When 'Auto' is chosen, the first tracker element is picked up. If there are no tracker elements, the system mouse is used by default.	Design Time..	enum
AOI		Normal..	enum
Sampling Rate	Defines the sampling rate of the tracker hardware in Hz. Set zero value for auto-detection.	Normal..	Double
Analysis Window Size	Defines the size of a moving analysis window in samples. The value also defines the data range in all generated plots.	Design Time..	Int32
Exclusive Thresholds	Defines whether the exclusive velocity and saccade thresholds are used by this element. The default value is false, which means that the same threshold values are shared with all eye-tracking analysis elements.	Normal..	Boolean
X Velocity Threshold	Defines the saccade velocity threshold for the X-axes.	Normal..	Double
Y Velocity Threshold	Defines the saccade velocity threshold for the Y-axes.	Normal..	Double
Minimal Saccade Duration	Defines the minimal duration threshold (in ms.) for the velocity-based saccade detection. If a saccade candidate shorter than the threshold, it's discarded after completion. Note that, the element can still be triggered at the start and peak velocity of the discarded saccades, when the triggering mode is not 'On the saccade end'. If you do not want to apply the minimal duration threshold, set the zero value.	Normal..	Double
Maximal Saccade Duration	Defines the maximal duration threshold (in ms.) for the velocity-based saccade detection. If a candidate saccade shorter than the threshold, it's discarded after completion. Note that, the element can still be triggered at the start and peak velocity of the discarded saccades, when the triggering mode is not 'On the saccade end'. If you do not want to apply the maximal duration threshold, set the zero value.	Normal..	Double
Detection Results
Current X Velocity	Returns the current gaze velocity along the X-axes. The value is read-only.	Status..	Double
Current Y Velocity	Returns the current gaze velocity along the Y-axes. The value is read-only.	Status..	Double
General Plot Settings
Rendering Size	Defines the size of the generated XAML staircase plot in pixels. The plot is automatically stretched on rendering, but a larger rendering size improves the chart quality with some cost in performance. The rendering size is also used as the resulting image resolution, when the chart is saved into a file.	clSize
Show Axis		Normal..	Boolean
Show Gridlines		Normal..	Boolean
Add Screen Clone		Design Time..	enum
High-Quality Rendering		Normal..	Boolean
Plot Theme		Normal..	Int32
Control
Is Enabled	If set to false the element is completely omitted when the experiment is run.	Design Time..	Boolean
Title	Title of the element	Design Time..	String

+=== Properties inherited from clElement === Inherited properties of clElement

Name	Description	Constraints	Value Type	Upon Change
Control
Is Enabled	If set to false the element is completely omitted when the experiment is run.	Design Time..	Boolean
Title	Title of the element.	Design Time..	String

¶

Description ¶

Snapshots ¶

Snapshot 1

Snapshot 2

Practical Use ¶

Technique 1 ¶

1. Step 1
2. Step 2
   

Technique 2 ¶

1. Step 1
2. Step 2
   

 // Check the trial outcome. Result and RT just other user variables
// insert code snippet here..

Notes ¶

• Insert Notes here..
• Insert Notes here..