LAYER LIST

This component of the Map Page provides a list of all the data layers available through ACT Locate, along with links to metadata for each. When the map is first drawn the Layer List is displayed showing the Group names only and the ‘Layers’ tab is highlighted in Yellow. Adjacent to each Group name is a ‘+’ symbol. When the user clicks on this symbol the Group will expand to display the available data layers. A Group can be collapsed by clicking on the ‘-‘ symbol.

The Group ‘Maps and Imagery’ in its collapsed state.

 The Group ‘Maps and Imagery’ in its expanded state.

A tick box is associated with each Group and each data layer. When the Group box is ticked it indicates that at least one of the layers is viewable on the map. When it is empty then none of the contained data layers is visible.

 

TheGroup ‘Environment’ in its collapsed state indicating that at least one of its data layers   is viewable on the map.

The Group ‘Environment’ in its expanded state showing that the Rivers and Creeks data layer is viewable on the map.

The Group ‘Land Administration’ in its expanded state showing that no data layers are viewable on the map.

The Group ‘Land Administration’ in its expanded state showing that all data layers are viewable on the map as a result of clicking on the Group box only.

Some layers are viewable by default when the map is first drawn. The default viewable layers vary with the scale at which the map is drawn and it may be necessary to re-establish these for a particular draw scale if they have been tick off by the user, or the draw scale has changed since the user last set them.

Clicking an empty box to display the tick can make that data layer viewable on the map. A layer can also be clicked to remove the tick and to stop the data layer being viewable on the map. NOTE:  THIS WILL NOT BE REFLECTED IN THE MAP DISPLAY UNTIL THE USER CLICKS ON THE ‘REDRAW MAP’ BUTTON BELOW THE LEGEND.

There are over forty data layers available in ACT Locate and these have been grouped to reduce the need for a user to scroll through the full list. The table below details the data layers available. Those highlighted in grey will be displayed on the map by default, although this is scale dependent.