Map Layers

The Map Layers tab gives access to which map layers are drawn and in which order it occurs. These properties are inherited as a block. Once a property is changed in the map or session, it maintains its own copy of all these properties from that point forward.

The following table provides definitions for the features available in the Map Layers tab.

Map Layer Settings Options	Definition
Layer Ordering…	Displays the editor shown in the figure below to set the order that the map layers are rendered in. The layers can also be enabled or disabled from this dialog. The remaining settings in this tab group reflect the ordering set in by this editor.
Show Internet Maps	If selected this will show maps retrieved from a map server such as Google Maps. Currently internet maps are displayed only when the Map Window projection is set to 'Trivial'
Show Terrain	If selected, this will show the terrain layer for a given .tif file specified under the terrain file node for the map panel.
Show Maps	If selected, the active maps are drawn. The position within the property sheet indicates the drawing order. In this example, the maps layer will be drawn first.
Show Tin Grid/Mesh	If selected shows a wire frame of the TIN
Show Contour Bands &/or Isohyets	If selected, renders the contour layer.
Show Thiessen Polygons	Shows the polygons computed by creating a perpendicular bisector of all the TIN triangle sides and connecting them to the bisectors of the adjacent triangles.
Show Raster	If selected, renders the raster layer.
Show Wind	If selected, renders wind vectors using pairs of the wind speed and direction datasets loaded in the same Map Window. Essentially, whether loading wind speed and direction TINs for a single time interval or multiple time intervals, pairs of wind speed and direction TINs with matching times need to be loaded into the same Map Window in order for the wind vector layer to be computed and displayed.
Show Annotations/Markups	If selected, renders the annotations from the currently selected annotation layer files.
Show Polygon/Basin Averages	If selected, renders the basin average layer. Note that basin averages are computed for a Map Window when it is drawn regardless of whether they are displayed on the Map Window. They will be tabulated in the message area on the basin averages tab.
Show Point Measurement Values	If selected, displays the point measurement values at the triangle vertex points of the TIN. It is linked to the contour palette and scale choices for color choices.
Show Latitude/Longitude	If selected, displays latitude and longitude lines.
Show Map Scale And North Arrow	If selected, the Map Scale and North Arrow layer will become visible. Note that the Map Scale and/or North Arrow need to be enabled in the Layer Settings to display this layer.