Unique values map is to classify elements with the same thematic value into one category, and set a rendering style for each category, and each category is a thematic map sub-item. The UniqueLayer object defines the attributes required to construct a unique values map.
| Attribute | Type | Description |
|
layerType |
string |
[Required] The layer type. Fixed constant: "UNIQUE". |
|
name |
string |
[Required] The layer name. |
|
visible |
boolean |
[Required] The visibility of the layer. |
|
opacity |
number |
[Optional] The opacity of the layer. The maximum value is 1 and the minimum value is 0. |
|
visibleScale |
[Optional] Stores the visible scale range of the current layer. |
|
|
dataSource |
DataSource |
[Required] The datasource of the UniqueLayer is one of the following five datasources: |
|
projection |
string |
[Required] The projected coordinate system of the map. Optional value: EPSG or WKT universal coordinate system description standard. |
|
featureType |
string |
[Required] The feature type. Optional constants: "POINT", "LINE", "POLYGON". |
|
xyField |
object<srting> |
[Required] It consists of two sub-attributes "xField" and "yField", which respectively define the name of the field to which the X and Y coordinates of the point feature belong. |
|
style |
object |
[Required] The feature style, determined by the featureType attribute. If the featureType is "POINT", the point feature style must meet PointStyle ; if the featureType is "LINE", the line feature style must meet LineStyle; if the featureType is "POLYGON", the polygon feature style must meet PolygonStyle . |
|
themeSetting |
UniqueThemeSetting |
[Required] Theme settings. |
|
labelStyle |
LabelStyle |
[Optional] Label style. |
|
legendSetting |
LegendSetting |
[Optional] Legend settings. |
|
searchSetting |
[Optional] Search settings. |
|
|
enableFields |
array<string> |
[Required] The fields displayed in attribute table |
|
captions |
object |
[Optional] The key is the field name, and the value is the user-defined string type field display name, for example: {"ADDRESS":"ADDRESS display name"}. |
|
popupInfo |
[Optional] Settings for the attribute pop-up window. |
|
|
autoUpdateTime |
number |
[Optional] The time for the layer data to be automatically refreshed, in milliseconds. |
Construct a UniqueLayer that conforms to the WebMap specification.
{
"layers": [
{
"layerType": "UNIQUE",
"name": "Partial provincial capitals",
"visible": true,
"featureType": "POLYGON",
"projection": "EPSG:4326",
"enableFields": [
"Province",
"Capitals"
],
"style": {
"lineDash": "solid",
"strokeWidth": 1,
"strokeColor": "#ffffff",
"strokeOpacity": 1,
"fillOpacity": 0.9,
"fillColor": "#99D594",
"type": "POLYGON"
},
"themeSetting": {
"themeField": "Province",
"colors": [
"#D53E4F",
"#FC8D59",
"#FEE08B",
"#FFFFBF",
"#E6F598",
"#99D594",
"#3288BD"
],
"customSettings": {
"Xinjiang": {
"lineDash": "solid",
"strokeWidth": 1,
"strokeColor": "#ffffff",
"strokeOpacity": 1,
"fillOpacity": 0.9,
"fillColor": "#c78cff",
"type": "POLYGON"
},
"Tibet": {
"lineDash": "solid",
"strokeWidth": 1,
"strokeColor": "#ffffff",
"strokeOpacity": 1,
"fillOpacity": 0.9,
"fillColor": "#3288BD",
"type": "POLYGON"
},
"Qinghai": {
"lineDash": "solid",
"strokeWidth": 1,
"strokeColor": "#ffffff",
"strokeOpacity": 1,
"fillOpacity": 0.9,
"fillColor": "#FC8D59",
"type": "POLYGON"
},
"Gansu": {
"lineDash": "solid",
"strokeWidth": 1,
"strokeColor": "#ffffff",
"strokeOpacity": 1,
"fillOpacity": 0.9,
"fillColor": "#99D594",
"type": "POLYGON"
}
}
},
"dataSource": {
"type": "PORTAL_DATA",
"serverId": "2001908278",
"accessType": "DIRECT",
"administrativeInfo": {
"divisionType": "Province",
"divisionField": "Province"
}
}
}
],
}