Represents a group of unique value classes (i.e. symbols). This is used to group symbols under a common heading and/or when representing multiple unique values with a single symbol.
Referenced by: UniqueValue Renderer
Properties
| Property | Details |
|---|---|
| classes[] | Specifies the classes (i.e. symbols) to group under a common heading. Classes may be included here without a heading when representing multiple values with a single symbol. |
| heading | The heading to be displayed for the collection of classes defined in this group. |
A group with heading Example
A Unique Value Renderer where multiple unique value info objects are organized under a legend heading.
{
"classes": [
{
"label": "Freeway",
"symbol": {
"type": "LineSymbol3D",
"symbolLayers": [
{
"type": "Line",
"material": {
"color": [
48,
255,
234
]
},
"size": 1
}
]
},
"values": [
[
"Interstate"
],
[
"Expressway"
]
]
},
{
"label": "U.S. Highway",
"symbol": {
"type": "LineSymbol3D",
"symbolLayers": [
{
"type": "Line",
"material": {
"color": [
255,
98,
7
]
},
"size": 1
}
]
},
"values": [
[
"Major highway"
],
[
"Minor highway"
]
]
},
{
"label": "Local Highway",
"symbol": {
"type": "LineSymbol3D",
"symbolLayers": [
{
"type": "Line",
"material": {
"color": [
239,
55,
172
]
},
"size": 1
}
]
},
"values": [
[
"State hwy"
]
]
}
]
}