The Layer Control toolbox, shown in Figure
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1, provides the user with a number of options for selecting and manipulating the layers such as grids, splines and overlays as described below.
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Options available to the user from the Layers Tool are as follows:
Show/Hide | Makes the layer visible or hidden. When the the box is checked the layer is visible |
Legend | For the layer selected this option will show or hide that layer label on the legend. If box is checked then the legend is visible. |
Import | Imports a polyline files or GRD file. Also loads CVL grid file. |
Export | Opens a browser window to choose a location to save the selected layer. Options include the following extensions CVL, GRD, KML, P2D, SHP, LDB. |
New | Creates a new layer |
Delete | Deletes the selected layer |
Rename | Renames the selected layer |
Format | Changes the color, symbol and line type of the lines on layer |
Combine | Combines selected layers into one, this function only applied for splines and overlay layers. |
View | View the selected layer |
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Note that users may also drag and drop a file onto the workspace to open it. |
The user can also edit a selected layer by using the list of options available when RMC on the items list, the enabled items list varies by layer type as shown in Figure
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3 and Figure 4 for grid, spline and overlay layers respectively.
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It should be noted that the Convert to splines option is available only for overlay layers. The purpose is for the overlay layer to be converted to a spline layer.
In addition, to create a new layer, the user can RMC on blank space of Layer Control, shown in Figure 5
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