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Element Icon Velocity Threshold Estimator
Info
Category: Eye-tracking analysis AddIn: Eye-tracking analysis AddIn
Creator: OkazoLab Team Scope: Parent Event
Owns Snippets: no Usage: Background processing

Actions aligned with epochs of the parent event

EpochActions
After experiment onsetThe element ...
Event rendered
Before event onset
After event onset
Control loop stepThe element ...
Before event offset
Before experiment offsetThe element ...

Properties

Generic Properties

NameProperty descriptionConstraintsTypeUpon change
Estimator Parameters
Is EstimatingDefines whether the threshold estimation is going on. Assign false to pause the estimation.Boolean
LambdaDefines the multiplication factor for the standard deviation of the collected velocity distribution. The result of the multiplication is used as the velocity threshold.Double
Gaze Processing
Radar ProviderDefines 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.String
AOI Int32
Sampling RateDefines the sampling rate of the tracker hardware in Hz. You can keep the zero value for auto-detection.Double
Analysis Window SizeDefines the size of a moving analysis window in samples. The value also defines the data range in all generated plots.Int32
Exclusive ThresholdsDefines whether the threshold estimation is going on. Assign false to pause the estimation.Boolean
X Velocity ThresholdDefines the saccade velocity threshold for the X-axes.Double
Y Velocity ThresholdDefines the saccade velocity threshold for the Y-axes.Double
General Plot Settings
Rendering SizeDefines 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
Plot Title String
Show Axis Boolean
Show Gridlines Boolean
Add Screen Clone Type
High-Quality Rendering Boolean
Plot Theme Int32
Velocity Plot Settings
Threshold Color stColor
Velocity Line Color stColor
Line Thickness Double
Saccade Label Color stColor
Results
Reset Plot NowProvides a runtime command that resets the plotted data. Assign 'true' in the snippets to invoke the command.Boolean
XAML Velocity PlotReturns 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.UIElement
Save Velocity Plot NowAssign a filename to save the generated plot at runtimeclDesignAction
Preview Velocity PlotOpen a window with the plot previewclDesignAction
Control
Is EnabledIf set to false the element is completely omitted when the experiment is run.Boolean
TitleTitle of the elementString

+=== Properties inherited from clElement === Inherited properties of clElement
NameDescriptionConstraintsValue TypeUpon Change
Control
Is EnabledIf set to false the element is completely omitted when the experiment is run.Boolean
TitleTitle of the element.String



The Velocity Threshold Estimator element automatically estimates the saccade threshold over the current eye-tracking data and its noise. The estimated threshold can be then used by other eye-tracking analysis elements in an experiment.


Description



Snapshots

Snapshot 1

Snapshot 1

Snapshot 2

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..

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