truthlog

Create truth log for metric evaluation from truth data

Since R2025a

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    Syntax

    tLog = truthlog(importer,source)
    [tLog,info] = truthlog(importer,source)

    Description

    tLog = truthlog(importer,source) returns truth log structures based on the source input. The truth log structures are useful for metric evaluation.

    example

    [tLog,info] = truthlog(importer,source) also returns info, which contains the platform IDs and class IDs mapping tables.

    Examples

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    Open Live Script

    Loads a saved truth TrackingTruthDataImporter object and displays the object properties. For more information on the creation of the TrackingTruthDataImporter object, see the Import Data Using Tracking Data Importer App example.

    load truthImporterFile.mat;
truthImporter
    truthImporter = 
TrackingTruthDataImporter with configurations:

Converter Name: FlightLog1
Input File Format: spreadsheet
Input Data Information: 
        Category:  Flight Log
      Frame Type:  Local NED

Elements and Mapping: 
     State Element     Unit       Original Column     Unit(Format)                         
     -------------     ------     ---------------     -------------------------------------     
     Date Time         sec        time                datetime string(dd-MMM-yyyy HH:mm:ss)
     Latitude          degree     latitude            degree                               
     Longitude         degree     longitude           degree                               
     Altitude          m          altitude            ft                                   
     Speed             m/s        speed               mi/h                                 
     Course            degree     course              degree                               
     Climb Rate        m/s        climbrate           ft/m                                 

Output Data Information: 
      Coordinate Type:  Cartesian
           Frame Type:  ECEF

Usage: 
      trackingScenarioRecording:  Export as a trackingScenarioRecording object for playing and metric evaluation
                       truthlog:  Export as a truth log structure for metric evaluation
                     tuningData:  Export as a tuning data structure for tracking filter turning
                 convertedTable:  Export converted table

    Apply the truthImporter object to a flight log named LAToBostonFlightLog.xlsx, to get truthlog.

    truthlog(truthImporter,"LAToBostonFlightLog.xlsx")
    ans=592×1 cell array
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
    {1×1 struct}
      ⋮

    Input Arguments

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    Tracking truth data importer, specified as a TrackingTruthDataImporter object. You can use the Tracking Data Importer app to create these objects.

    Data source to read, specified as a string scalar representing the path to a data file, or as a MATLAB table or timetable from workspace.

    For details on the exact format requirements for the file or table, see the display of the importer object.

    Example: "./flight_log.csv"

    Output Arguments

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    Truth log for metric evaluation, returned as a array of structures. You can use the truth log as inputs for the trackOSPAMetric and trackGOSPAMetric system objects.

    Platform IDs and class IDs mapping information, returned as a structure that contains two fields:

    • PlatformIDMapping — Mapping relationship between platform IDs in the source and exported platform IDs, returned as a dictionary object.

    • ClassIDMapping — Mapping relationship between class IDs in the source and exported class IDs, returned as a dictionary object.

    Version History

    Introduced in R2025a

    See Also

    Apps

    Objects