Layers and the Table of Contents

Layer List

The Layer List is in the Layers panel on left side of the viewer. To open the Layers panel either click on the Layers tab in the lower left corner of the viewer OR click on the Layer List button on the Map tab at the top.

Layers are listed in Groups. Click on the plus to expand a group. The group needs to be checked in order for layers inside it to be visible .

In this example, the New Marsh group is checked on. Layers in the group (New Marsh Boundary 2055 and New Marsh Priobability 2055) can now be checked on and viewed.

Expand as many groups as you like and turn on (check) any combination of layers. Remember that layers draw in order. Layers higher up on the list will draw above and on top of layers below. Layers often overlap so may cover each other up. If this is the case, use transparency or turn the layer off.

Layer Actions

Many layers have a chevron to the right of the layer name in the Table of Contents which opens the Layer Actions menu/panel. The panel contains options like Zoom to full extent (of layer), Zoom to visible scale (of layer), links to Metadata or other related information. At this time, raster layers like imagery do not have the layer actions option. To close the panel, click on the  in the upper right corner.

Transparency

Transparency makes a layer partially or fully see-through. Transparency can be adjusted on some layers by moving the transparency slider next to the layer's name.

Layer Information

It is important to be familiar with the layers before you use them for a particular application. Layer information is available for some layers through the Layer Actions panel in the form of guides and metadata. The best place to get information about the layers in the viewer is the Sea Level Rise Effects on Roads & Marshes Layer Information page.

Legend

From the Layers panel, click on the Panel Actions icon  at the top right of the panel. Click on Show Legend to open the Legend panel. The panel contains the legend for all layers that are turned on (checked) in the table of contents. To CLOSE the Legend, click on the  at the top of the Legend panel to return to the Layers panel.

Symbology, or the symbols used for a layer (which are also shown in the legend), can also be viewed in the Table of Contents. Click on the Legend info icon to the left of the layer name to show the legend. In the case where only one symbol is used in a layer, that symbol is visible instead of the legend information icon.

Tools

Home

Home returns to the initial home panel which includes basic instructions and a few links.

Full Extent

Full Extent returns the map extent to the full view which is Connecticut and beyond.

Initial View

Initial View returns the map extent to the initial extent when the viewer first opened.

Previous Extent, Next Extent

If you have zoomed at least once since the viewer was opened, the Previous Extent button will take you back to the previous zoom area. The Previous Extent button can be used multiple times. After using the Previous Extent button to go back, the Next Extent takes you incrementally forward through already viewed extents.

Pan

The Pan tool cancels any active tools and sets the cursor to pan around the map.

Bookmarks

Use the Bookmarks button to save specific extents during your session. Bookmarks make it easy to jump around the map to areas of interest. First, zoom to an area of interest then click the bookmarks button. Choose Bookmark Current Extent and give the bookmark a name. The named bookmark will remain in the list even while you move around and work with the map.

Layer List

The Layer List icon opens the Layer List panel.

Coordinates and Scale

Coordinates Widget (lower left)

The left side of the footer ribbon holds the coordinates widget, the scale input box, and the scale bar.

Click on the Coordinates Widget button to expand the Coordinates widget. Notice that clicking on the black triangle  gives coordinate system choices. When you move the mouse over the map, the coordinates change. The Coordinate System page discusses the different coordinate systems in more detail, and the shortcuts section pertains to this viewer.

Click on the Scale Input Box  icon to expand the tool. Choose a per-existing scale. The scales are set following the Google/Bing tiling scheme.

Coordinates from the Map

Right-click on any location on the map to see the latitude and longitude for that location.

Feature Pop-up Information

Some layers contain more information in a pop-up. Click on the map and the pop-up opens for any layer that is turned on, has pop-ups enabled AND has a feature in that location. If more than one layer has a feature at that spot, use the drop-down menu or arrows  to flip through the features.

View Additional Details opens a new panel containing all attributes associated with that feature. It also zooms to the feature. Close the panel with the in the upper right. To go back to the view before you clicked View Additional Details, use the Previous Extent  button on the toolbar.

Search

Use the Search Tool (upper right) to find a location, place, address and more. Type into the Search window and press Enter. Search Results will appear in the side panel. Click on the result you wish to navigate to. The map will redraw with the feature centered on the map. Click the in the  to remove the search results, or click on the Layers tab at the bottom of the side panel to view the Layers List.