Working with layers and map contents

A mapping application can use one or more content sources. Each content item corresponds to a service, such as an ArcGIS Server service. Each source contains one or more map layers. A map layer is a type of data shown on the map, such as roads, cities or a satellite image.

The Table of Contents allows for changing the visibility of layers, changing layer transparency, viewing the map legend, and changing the basemap.

Layer Visibility

If the mapping application allows it, you can view the list of the contents of the map, turn on and off layers, and examine the symbols for layers.

To examine the map contents:

• In the Toolbar under Map, display the Table of Contents. If Contents is not present, then choose Layer Visibility.
• The eye next to the layer indicates whether the layer is currently turned on.
• If enabled, you can click the eye next to the layer name to turn the layer on or off. The map automatically redraws to reflect the changes in layer visibility.
• Some layers may not be visible at the current map scale (zoom level). These layers are called scale dependent.
• The transparency of layers can be adjusted by clicking the 3 dots. You can increase or decrease opacity for visibility.

Map Legend

The Map Legend will show what the symbology within each layer means.

Basemap

The Basemap is the layer underneath the watersheds. You have the ability to change this.