You can use the data layer feature to display multiple data series (different sets of dimensions and metrics) on a single map visualization. The data layers are overlaid on one another in a single map visualization.
- Create or open the project where you want to display multiple data layer overlays on a single map visualization. Confirm that you’re working in the Visualize canvas.
- Drag and drop a measure or attribute columns containing map-related data from the Data Panel to the Category (Geography) section on the Grammar Panel.
If you’re creating a map visualization, in the Data Panel, right-click an attribute column and click Pick Visualization then select Map.
- Click Layer options in the Category (Geography) section of the Grammar Panel and click Add Layer to add a new data layer (for example, Layer 2).
Alternatively in the Data Layers tab click Add Layer (+).
- Drag and drop a column to the Category (Geography) section. Based on the column values the map visualization automatically updates with a different set of dimensions, and it overlays on the previous layer.
- Repeat step 3 and 4 to add multiple data layers on the map visualization.
- Click Layer options to use other options such as Order Layer, Hide Layer, and Manage Layers.
- In the Data Layers tab of the properties pane, you can specify the options for a layer such as Layer Type, Map Layer, Transparency, and Show Layer.
- To refine the data shown for the measure and attribute columns in all the data layers, you can apply a filter such as a Range Filter or List Filter, to the map visualization. For example, you can select a measure or attribute for a layer, then apply filter to reduce the amount of data shown, and add the same measure or attribute to the Color section on the Grammar Panel.