addAttribute

R2026b

(To be removed) Add attribute to label in label definition creator for lidar workflow

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    addAttribute will be removed in a future release. Use the labelDefinitionCreatorMultiSensor object instead. For information on updating your code, see Version History.

    Syntax

    addAttribute(ldc,labelName,attributeName,typeOfAttribute,attributeDefault)
    addAttribute(___,Name,Value)

    Description

    addAttribute(ldc,labelName,attributeName,typeOfAttribute,attributeDefault) adds an attribute with the specified name and type to the indicated label. The attribute is added to the hierarchy of the specified label in the labelDefinitionCreatorLidar object ldc.

    example

    addAttribute(___,Name,Value) specifies options using one or more name-value pair arguments in addition to the input arguments in the previous syntax.

    Examples

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    Open Live Script

    Create an empty labelDefinitionCreatorLidar object.

    ldc = labelDefinitionCreatorLidar
    ldc = 
labelDefinitionCreatorLidar

    Add a Cuboid label, Vehicle, to the label definition creator object. Include Group information for the label.

    addLabel(ldc,'Vehicle','Cuboid','Group','Transport');

    Add a Scene label, TrafficSign, to the object. Include Group information for the label.

    addLabel(ldc,'TrafficSign','Scene','Group','Data');

    Add a Color attribute to the Vehicle label as a string.

    addAttribute(ldc,'Vehicle','Color','String','Red');

    Display the details of the updated label definition creator object.

    ldc
    ldc = 
labelDefinitionCreatorLidar contains the following labels:

	Vehicle with 1 attributes and belongs to Transport group.	(info)
	TrafficSign with 0 attributes and belongs to Data group.	(info)

For more details about attributes, use the info method.

    Display information about the label Vehicle using the info object function.

    info(ldc,'Vehicle')
               Name: "Vehicle"
           Type: {[Cuboid]}
     LabelColor: {''}
          Group: "Transport"
     Attributes: "Color"
    Description: ' '

    Display information about the Color attribute of the Vehicle label using the info object function.

    info(ldc,'Vehicle/Color')
                Name: "Color"
            Type: String
    DefaultValue: 'Red'
     Description: ' '

    Input Arguments

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    Label definition creator for the lidar workflow, specified as a labelDefinitionCreatorLidar object.

    Label name, specified as a character vector or string scalar. This sets the label to which to add the attribute.

    Attribute name, specified as a character vector or string scalar. This sets the attribute to add to the label.

    Type of attribute, specified using one of these options:

    • attributeType enumeration — Specify the attribute as a Numeric, Logical, String, or List attributeType (Computer Vision Toolbox) enumerator. For example, attributeType.String specifies a String attribute type.

    • Character vector or string scalar — Specify a value that partially or fully matches one of the attributeType (Computer Vision Toolbox) enumerators. For example, Str specifies a String attribute type.

    Default value of the attribute, specified as a valid attribute value depending on the value of the typeOfAttribute argument:

    • Numeric — Specify the value as a numeric scalar.

    • Logical — Specify the value as a logical scalar.

    • String — Specify the value as a character vector or string scalar.

    • List — Specify the value as a cell array of character vectors or string scalars. The first element of the cell array is the default value.

    Name-Value Arguments

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    Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

    Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

    Example: 'Description','car' sets the description of the added label attribute to 'car'.

    Attribute description, specified as the comma-separated pair consisting of 'Description' and a character vector or string scalar. Use this name-value pair argument to describe the attribute.

    Version History

    Introduced in R2020b

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    See Also

    Objects

    Functions