How can I remove dark background in satellite label

Hello,

I would like to have removed dark background in labels like below:

This is satellite made by satelliteScenario.

Code used for generation:

        startTime = datetime(2024,04,03,14,08,13, 'Format','dd-MMM-yyyy HH:mm:ss.SSSSSSSSS', 'TimeZone', 'UTC');
        E_startTime = startTime;
        E_stopTime = E_startTime + seconds(10);
        E_samplePeriod = 1; 
        sc = satelliteScenario(E_startTime, E_stopTime, E_samplePeriod);
        TLE_file_name = 'tle_iss.tle';
        Name= 'ISS';
        sat = satellite(sc, TLE_file_name, 'Name', 'ISS', "OrbitPropagator", "sgp4");
        sat.LabelFontColor = 'red';
        sat.MarkerColor = 'red';
        sat.Orbit.LineWidth = 2';
        sat.Orbit.LineColor = 'red';
        play(sc)

Is is possible to have it removed or changed?

In version 2021a there was no background at all.

Thanks for help!

[Arjun]

Hi @Piotr,

Can you please attach the file "tle_iss.tle" as it is needed to run your script.

[Piotr]

Hi @Arjun

Here is the file.

Answer 1

[Image Analyst]

Not sure exactly what function you used to put the text label on, like text or insertText, but look at those functions for an option like 'BackgroundColor' or something like that to use "transparent" or white or whatever you want.

[Piotr]

Label is generated by default by this function.

For the rest of the objects on the map I am also adding new objects with default labels and it looks the same.

In previous versions it has worked good, so I assume there should be a way to change the background.

[Image Analyst]

I don't have the satellite toolbox. Can you step through it and tell me the function that is executed exactly when the text label appears?

[Piotr]

sat = satellite(sc, TLE_file_name, 'Name', 'ISS', "OrbitPropagator", "sgp4");

This line executes satellite itself and the label(third arg)

[Image Analyst]

I don't see any options listed for that built-in function to control any properties of the text label. So if that's the case, and you might call tech support to check, then you have two options: (

1. Tell it not to give a name and drop down a label right over that label would go. text or insertText should give you more options for text properties.
2. Save the image and somehow do image processing to find the label and replace the background with something, like the background from the original image or white.

help satellite

--- help for satelliteScenario/satellite ---

 satelliteScenario/satellite - Add satellites to satellite scenario
    This MATLAB function adds Satellite objects from file to the satellite
    scenario specified by scenario.

    Syntax
      satellite(scenario,file)
      satellite(scenario,RINEXdata)
      satellite(scenario,semimajoraxis,eccentricity,inclination,RAAN,argofperiapsis,trueanomaly)
      satellite(scenario,positiontable)
      satellite(scenario,positiontable,velocitytable)
      satellite(scenario,positiontimeseries)
      satellite(scenario,positiontimeseries,velocitytimeseries)
      satellite(___,Name,Value)
      sat = satellite(___)

    Input Arguments
      scenario - Satellite scenario
        satelliteScenario object
      file - TLE, Orbit Mean-Elements Message (OMM), or SEM almanac file
        character vector | string scalar
      RINEXdata - RINEX navigation message
        structure
      semimajoraxis - Keplerian elements defined in GCRF
        comma-separated list of vectors
      eccentricity - Keplerian elements defined in GCRF
        comma-separated list of vectors
      inclination - Keplerian elements defined in GCRF
        comma-separated list of vectors
      RAAN - Keplerian elements defined in GCRF
        comma-separated list of vectors
      argofperiapsis - Keplerian elements defined in GCRF
        comma-separated list of vectors
      trueanomaly - Keplerian elements defined in GCRF
        comma-separated list of vectors
      positiontable - Position data
        timetable | table
      velocitytable - Velocity data
        timetable | table
      positiontimeseries - Position data
        timeseries object | tscollection object
      velocitytimeseries - Velocity data
        timeseries object | tscollection object

    Name-Value Arguments
      CoordinateFrame - Satellite state coordinate frame
        "inertial" (default) | "ecef" | "geographic"
      GPSweekepoch - GPS week epoch
        date string
      Viewer - Satellite scenario viewer
        vector of satelliteScenarioViewer objects (default) |
        scalar satelliteScenarioViewer object |
        array of satelliteScenarioViewer objects
      Name - Satellite name
        string scalar | string vector | character vector |
        cell array of character vectors
      OrbitPropagator - Name of orbit propagator
        "sgp4" | "sdp4" | "two-body-keplerian" | "ephemeris" | "gps" |
        "galileo" | "numerical"
      Visual3DModel - Name of 3-D model file
        zero-length string (default)
      Visual3DModelScale - Linear scaling of 3-D model
        1 (default) | nonnegative integer

    Output Arguments
      sat - Satellite in the scenario
        Satellite object

    Examples
      openExample('aero_satcom/VisualizeSatelliteTrajectoriesExample')
      openExample('aero_satcom/AddGroundStationsToScenarioAndVisualizeAccessIntervalsExample')
      openExample('aero_satcom/AddSatellitesToScenarioUsingKeplerianElementsExample')
      openExample('aero_satcom/VisualizeGPSConstellationExample')
      openExample('aero_satcom/AddSatToSatelliteScenarioFromCCSDSOMMMessageFileExample')

    See also satelliteScenario, satelliteScenarioViewer, PhysicalProperties,
      access, show, play, hide, orbitalElements, physicalProperties

    Introduced in Aerospace Toolbox in R2021a
    Documentation for satelliteScenario/satellite
       doc satelliteScenario/satellite