Grid Aggregation Layer (v4.x)

Chart style

The Grid Aggregation Layer is a sub-widget of Basic Flat Map 4.0 that aggregates points into grids to visualize point density across geographical locations. You can configure grid size, color, and labels.

Style panel

• Search Configuration: Click the icon in the upper-right corner of the Style panel to search for configuration items by name. Fuzzy matching is supported. Search for a configuration item.

• Quick Styles: The Grid Aggregation Layer sub-widget provides preset styles that you can apply directly.

• General: Configure general settings for the Grid Aggregation Layer.

  Parameter	Description
  Visibility Level	Set the visibility level for the Grid Aggregation Layer. The layer is visible only within the specified level range.
  Opacity	Set the layer opacity. Valid values: 0 to 100%. Higher values make the layer more opaque.

• Graphics: Configure graphics settings for the Grid Aggregation Layer.

  Parameter	Description
  Grid type	Select a grid type. Options include Standard, Honeycomb, and Circle.
  Aggregate function	Select an aggregate function. The map recalculates and updates its display based on the selected function. Available functions include but are not limited to COUNT, SUM, AVG, MAX, and MIN.
  Aggregation radius	Specify the aggregation radius based on actual map distance. Valid values: 0 to 1000 km.
  Grid size	Set the size of the grid. For more information, see Use the size mapper to configure the mapping size styles for different grids.
  Grid color	Set the color style of the grid. For more information, see Use the color mapper to configure the mapping color styles for different grids.
  Grid outline	Set the color and thickness of the grid outline based on the current grid radius. Thickness valid values: 0 to 50.
  Grid shadow	Set the color, blur, and horizontal or vertical offset of the grid shadow relative to the grid centroid.
  Grid label	Click the icon on the left to show or hide the grid label style. Text style: Set the font, font weight, font size, and color of the label text.

Data Source panel

Advanced panel

Configure interaction events or associate global variables for filter interactions between widgets. Configure widget interactions.

Blueprint interaction

1. Click the icon in the upper-left corner of the page to open the Blueprint page.

2. On the Layer Nodes tab, add the current widget to the main canvas.

3. View the Blueprint configuration parameters.

   Note

   Click the icon in the anchor point area on the right to view event and action parameter tooltips.

   • Events

     Event	Description
     When data is updated	Triggered when the data response result changes, and returns the updated data.
     When data request status changes	Triggered when the data request status changes. The callback parameter is the current status. For a data example, see the Data response result area on the Data Source tab in the widget's configuration panel.
     Component Loaded	Triggered after a data API request is returned and processed by a filter. Returns the processed data in JSON format. For a data example, see the Data Response area on the Data Source tab in the widget's configuration panel.

   • Actions

     Action	Description
     Import Data API	Processes data into the format required by the component, then imports the data to redraw the component without re-requesting data from the server. Data example: [ { "lng": 126.75, // longitude "lat": 42.95, // latitude "value": 22 // aggregation weight value } ]
     Request Data API	Re-requests data from the server. Data from an input data processing node or a layer node is used as a parameter. For example, if a grid aggregation layer has its API data source set to https://api.test and the data passed to the Request Data API action is { id: '1'}, the final request URL is https://api.test?id=1.
     Toggle Visibility	The Toggle Visibility, Show, and Hide actions do not require parameters by default. You can add animation configurations as needed. See the data example. { // Animation type. Optional values: appear|fade|slideToUp. The default is fade. If left blank, there is no animation. "animationType": "fade", // Animation duration. The default is 1000 ms. "animationDuration": 1000, // Animation curve. Optional values: linear|easeInOutQuad|easeInOutExpo. The default is linear. "animationEasing": "linear" }
     Show
     Hide
     Update Component Configuration	Dynamically updates the component style configuration. To obtain the configuration data, go to the Style panel and click Copy Configuration to Clipboard. Then modify the style field values as needed in the data processing node on the blueprint editor page.