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5.0 Overview
A Display Control is the interface through which a display can be managed. A display is usually shown in a view though they can be stand-alone.
5.0.0 Display Legends
The legend in a View lists the set of Display Controls within that view. In the image below, the legend has been floated from the main view window into its own window. This is done with the Float Window button.
Side Legend
Image 1: Side Legend

The legend shows each display under the "display category" of that display. For example, the legend in the above image shows the categories "Maps", "General", "Imagery", "Plan Views" and "Point Data". The display category may be changed (see below). This is useful for grouping and controlling the visibility of a group of displays.

The legend label shows the parameter or field name, the display type, and sometimes other information such as the level of a plan view or value of an isosurface. The label may be changed by a user using items under the Edit->Properties menu item (described below). Clicking on the highlighted part of the label will bring up the displays control window. Right clicking will bring up the displays control menu.

The category display within the legend can be toggled to show or hide the displays under that category with the Toggle Category button. The details of a display can also be toggled with the Toggle Details button. The visibility of the displays under a category (i.e., the graphical display within the main view window) can be changed with the Category Visibility Checkbox. The visibility of an individual display can be changed with the Display Visibility Checkbox

The Remove button allows you to quickly remove a display. The Lock Visibility Toggle allows you to "lock" the current visibility of the display and not change it while doing the visibility cycling.

Detailed information about a display may also be shown in the legend. For example, for those displays that use a color table, the color bar will also be shown in the legend. Moving the mouse over the color bar shows intermediate values. Click on the color bar to get a Color Table Editor with the color table for that display.

5.0.1 Drag And Drop
By clicking and dragging on this legend label you can drop it into another View to change which View the display control is in. Also, within the Dashboard's Displays tab, you can use drag and drop button to drop it onto one of the View labels to also change the View. Within the legend you can also drag label onto another Category label to change the display category.
5.0.2 Menus
All display control windows share a common set of File, Edit, View, and Help menu items, shown in the menu bar. Different controls may also have custom items in these menus as well.

The File menu has these common choices:

The Edit menu has these common choices: The View menu has these common choices: The Help menu has these common choices:
5.0.3 Properties Dialog
The Properties dialog is brought up with the Edit->Properties menu:
Display Control Properties
Image 2: Display Control Properties
The Display Category field is arbitrary text and is used to organize the legend. The "<<" button shows a list of all of the current display categories and allows you to easily set this field.

The Legend Label field is the label used in the legend of this display control. It can contain arbitrary text as well as a set of "macros". The macros can be added to the label with the Add Macro button:

The Extra Legend Labels field acts like the Legend Label field (e.g., with macros).

The Display Label field acts like the Legend Label field to define the text label that is shown in the display list. The color swatch shows the current color for the labeld. Clicking on it brings up a color menu that can be used to change the color of the label.

The Id field is used to define an ID for this display. The ID is used for accessing particular displays from the IDV Scripting Language.

There may be a variety of check boxes:

There may be other tabs shown, depending on the display. For example, the Color Scale tab allows you to configure where the color scale bar is shown (see below). The Spatial Subset tab allows you to change the spatial subsetting of the data.

5.0.4 Color Scale
For those controls that include color tables, you can display the color scale (legend) in the main view window. Use the options under the Color Scale tab to configure the positioning and labelling of the color scale.
Color Scale Properties
Image 3: Color Scale Properties
5.0.5 Display Visibility


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