The layer manager allows you to sort each feature layer as either data layer, support layer or hidden layer. On start-up all of your layers are in the data layer section. They are ordered in the same way as in your web map.
The three feature layers of my web map (US States, Major Cities and Counties) are in the data layer section.
Data Layers are the feature layers you want to thematically map in the dashboard. There must be at least one data layer present. If you have more than one data layer, a ‘Geography’ button will automatically appear in the dashboard that allows you to open the geography explorer to switch between your geographies:
The layer whose check box is ticked will appear in the dashboard on start-up. In the example above this is the State Capitals layer.
Each layer in the data layers section has its own tool menu:
will open the Edit Properties dialog of the data layer in which you can edit a number of properties, e.g. the name of the layer as it will appear in the legend, the opacity and the border thickness.
will move the data layer into the support layers section.
will move the data layer into the hidden layers section.
Support layers are used to show contextual information. This can for example be a different administrative boundary than in the data layer to provide additional context. You could also use a point layer as support layer to show, for example, major cities in your area.
Support layers don’t interact dynamically with the other dashboard widgets. They are only visible in the map. When their check box is ticked in the layer manager, they will be visible on start-up in the map. If the check box is not ticked they will appear in the legend but need to be clicked first to show in the map.
The tool menu for support layers is similar to the ones for data layers:
will open the Edit Properties dialog of the support layer in which you can edit a number of properties, e.g. the name of the layer as it will appear in the legend, the opacity, and the border thickness.
will move the layer up into the data layer section.
Hidden layers are feature layers that you have in your web map but which you do not want to appear in the dashboard. The dashboard will ignore all hidden layers.
There is only one tool icon available for hidden layers:
will move the hidden layer back to the section it was previously in (data layers or support layers).
The layer order from your web map is always kept in the dashboard. That means that a support layer can either be shown above or below a data layer, depending on their sorting in the corresponding web map.
It is advisable to move the support layer above the data layer(s) in the web map. If the support layer is a polygon layer it can be edited in the layer manager so that the fill colour of the polygons is transparent. This will only leave the borders of the support layer showing visibly on top of the data layer.