Secondary PQLab Tracker Element

Modified on 2018/08/22 00:54 by Administrator Categorized as Elements, Mouse Touch Joystick
<div style="margin-right: 10px; margin-left: 16px; margin-bottom:10px; float: right; width: 500px; overflow: hidden; height: auto; padding: 0px; background: #fafafa; background: -webkit-gradient(linear, left top, left bottom, from(#fbfbfb), to(#fafafa));background: -moz-linear-gradient(top, #fbfbfb, #fafafa);border: 1px dashed #ddd;box-shadow: 0 0 0 3px #fff, 0 0 0 5px #ddd, 0 0 0 10px #fff, 0 0 2px 10px #eee;">
== Summary ==
{s:Element Info Panel
| title=Secondary PQ Lab Tracker
| category=Mouse Touch Joystick
| icon=[image|Element Icon|{UP(Secondary-PQLab-Tracker-Element)}Secondary-PQ-Lab-Tracker-Element-Icon.png]
| author= OkazoLab
| addin= PQLab
| scope= Experiment
| usage= Snippets
| ownsnippets= None
}
== Synchronized actions ==
{|
|-
! Epoch
! Actions
|-
|-
| On Experiment Start                        
| Starts processing tracker samples
|-
| On Experiment Start                        
| Stops processing tracker samples
|-
|}
== Properties ==
{|
|-
! Name
! Description                              
! Constraints
! Type
! On<br/>runtime<br/>change
|-
| colspan="5" bgcolor="#AADDDDD" | Settings
|-
| Server Address        
| Defines the IP address of the PQLab Multi-touch Server in the xxx.xxx.xxx.xxx format. If the server runs on the same PC, use the local host address, 127.0.0.1        
| {s:atDesign}        
| String        
|  
|-
| Port Number        
| Defines the TCP port used by PQLab Multi-touch Server. The default value is 21555.        
| {s:atDesign}        
| Int32        
|  
|-
| Move Threshold        
| Defines the moving threshold in pixels for detection of touch movements        
| {s:atDesign}        
| Int32        
|  
|-
| Finger ID Filter        
| Defines whether a filter by finger ID is applied for touch samples. The finger ID filter can help in capturing samples coming from a selected finger, when multi-touching is allowed. To enable the filter, set the ID to a positive number (note that the finger index is defined by the actual touch order). If you want to record all samples of any touch, keep the finger ID filter at 0        
| {s:atNormal}        
| Int32        
|  
|-
| Viewport Filter        
| Defines whether a viewport filter is applied for touch samples. The viewport filter can help in capturing samples coming from a selected touch-screen on a multi-screens configuration. To enable the filter, set the viewport's width and height to non-zero values.        
| {s:atNormal}        
| Rect        
|  
|-
| Multitouch Mode        
| Defines how samples from different tips are converted to tracking points        
| {s:atNormal}        
| Int32        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Tracker Samples
|-
| Newest Samples        
| Returns an array of the most recent tracker samples. The array is updated every Control Loop cycle.        
| {s:atStatus}        
| clPQLa..        
|  
|-
| Newest Sample        
| Returns the newest tracker sample. The sample is updated every Control Loop cycle.        
| {s:atStatus}        
| clPQLa..        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | GLM Calibration
|-
| Run GLM Calibration        
| Runs the GLM calibration procedure, which calculates two pairs of linear coefficients for mapping of the tracker input into the screen coordinates. The calculated coefficients are automatically applied at runtime.        
| {s:atDesign}        
| Boolean        
|  
|-
| Gain X        
| Defines the gain coefficient for the X axis
in the GLM calibration model: X='GainX'*x+OffsetX        
| {s:atNormal}        
| Double        
|  
|-
| Gain Y        
| Defines the gain coefficient for the Y axis
in the GLM calibration model: Y='GainY'*y+OffsetY        
| {s:atNormal}        
| Double        
|  
|-
| Offset X        
| Defines the offset coefficient for the X axis
in the GLM calibration model: X=GainX*x+'OffsetX'        
| {s:atNormal}        
| Double        
|  
|-
| Offset Y        
| Defines the offset coefficient for the Y axis in the GLM calibration model: Y=GainY*y+'OffsetY'        
| {s:atNormal}        
| Double        
|  
|-
| Save Calibration Now        
| Provides a runtime command that saves the current GLM calibration into a XML file. To run the command at runtime, assign a file name to this property.        
| {s:atRuntimeAction}        
| String        
|  
|-
| Load Calibration Now        
| Provides a runtime command that loads the GLM calibration values from a XML file. To run the command at runtime, assign a file name to this property.        
| {s:atRuntimeAction}        
| String        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Drift Correction
|-
| Recalibrate Now        
| Runtime command that helps to correct drifts in tracking data.Correction is done by recalibration of the latest tracker position into a custom screen point defined by the 'Recalibration Point' property.nAs result, the offsets of the GLM calibration get adjusted (but not gains) to compensate a drift in further data.        
| {s:atRuntimeAction}        
| Boolean        
|  
|-
| Recalibration Point        
| Defines the screen point to which the tracker position will be recalibrated on calling 'Recalibrate Now' action. The default auto value always denotes the screen center.        
| {s:atNormal}        
| clPoint        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Filters
|-
| Smoothing Ratio        
| Defines a ratio for the fast FIR smoothing filter, which is applied to the gaze tracking within EventIDE. The filter convolves every new tracking position with the previous ones.
The property value defines a tap weight for the previous data,
such that the convolution looks like: X=(Xn*(1-Ratio)+Xn-1*Ratio)/2. The value has to be positive and less than 1 (0 means no filtering).        
| {s:atNormal}        
| Double        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Logging
|-
| Log Folder        
| Opens the dialog for selecting a local folder that will hold all tracking logs        
| {s:atRuntimeAction}        
| String        
|  
|-
| Open Log Designer        
| Opens a designer window where the log format can be defined.        
| {s:atDesign}        
| Boolean        
|  
|-
| Is Logging        
| Defines whether logging is turn on/off.The value can be changed at any moment at runtime allowing selective logging during the relevant periods only.        
| {s:atNormal}        
| Boolean        
|  
|-
| User Field        
| Defines the custom user data that is added to every line in the log file. The property can be used for recording varying status information (e.g. trial number) together with the tracker data. The string value may contains multiple fields separated by delimiter.        
| {s:atNormal}        
| String        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Runtime
|-
| Radar Point        
| Returns the newest calibrated tracking position provided by the tracker at runtime        
| {s:atNormal}        
| clPoint        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Control
|-
| Is Enabled        
| If set to false the element is completely omitted when the experiment is run        
| {s:atDesign}        
| Boolean        
|  
|-
| Title        
| Title of the element        
| {s:atDesign}        
| String        
|  
|-            
|}
== ==
</div>
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
<!--*****************************************************************************************************************************************************************************-->
'''Secondary PQLab Tracker Element''' enables tracking with a secondary PQLab touch screen connected to the same computer, as the primary PQ touch screen. <br><br>
{TOC}
== Description ==
...
== Snapshots ==
{|
| [imageleft|Snapshot 1 <br/>|{UP(page - name)}*-sm.png |{UP(page - name)}*.png]
|| [imageleft|Snapshot 2 |{UP(page - name)}*-sm.png |{UP(page - name)}*.png]
|}
== Practical Use ==
...
=== Technique 1 ===
# Step 1
# Step 2
...
=== Technique 2 ===
# Step 1
# Step 2
...
<div style="margin-left:0px; margin-right:10px; margin-top:10px; width: auto; overflow: hidden; height: auto; background: #fafafa; background: -webkit-gradient(linear, left top, left bottom, from(#fbfbfb), to(#fafafa));background: -moz-linear-gradient(top, #fbfbfb, #fafafa);border: 1px dashed #ddd;box-shadow: 0 0 0 3px #fff, 0 0 0 5px #ddd, 0 0 0 10px #fff, 0 0 2px 10px #eee;">
@@ csharp // Check the trial outcome. Result and RT just other user variables
// insert code snippet here..
@@</div>           
...
== Notes ==
...
* Insert Notes here..
* Insert Notes here..
Meta Keywords:
Meta Description:
Change Comment:
EventIDE Wiki

Navigation¶

Secondary PQLab Tracker Element
