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
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
Remove button allows you to quickly remove a display.
Lock Visibility Toggle allows you to "lock"
the current visibility of the display and not change it while doing the
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.
File menu has these common choices:
Save Data in Cache
Save As Parameter Defaults
Save Display as Favorite
Save Display as Bundle
Editmenu has these common choices:
Selector Color, et. al.
Change Display Unit
Viewmenu has these common choices:
Bring to Front
Show View Window
Use Times in Animation
Use Times in Animation
Drive Times with this Display
Uses Time Driver Times
Use Data Projection
Helpmenu has these common choices:
Display Categoryfield 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.
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:
Short NameThis is the short name of the parameter being displayed.
Long NameThis is the long name of the parameter being displayed.
Data Source NameThis is the name of the data source that produced the parameter being displayed.
Display NameThe name of the display.
TimestampThe time of the data that is currently being displayed using the default time format preference. You can also use a macro of the form %time:<time pattern>% to set a specific time format other than the default. <time pattern> follows the same rules defined in the User Preferences section. For example, %time:HHz EEE dd MMM yyyy% would give something like 12GMT Fri 16 Feb 2007.
...And other values depending on the display.
Extra Legend Labels field acts like the Legend Label field (e.g., with macros).
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.
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:
Show In Display ListAllows you to toggle the visibility of the label in the view window. Note that you must enable showing the list of display labels that are toggled on using the
View->Propertiesdialog of the view window, or by setting the global property for all display through the User Preferences dialog.
Lock Visibility ToggleLocks/unlocks visibility toggling.
Show Note TextArbitrary text notes can be added to a display. This checkbox menu item shows or hides the text field that allows you to edit the notes.
Use Fast RenderingWhen this is checked on, the IDV will not try to account for projection seams. This will cause displays to be rendered faster at the expense of accuracy.
There may be other tabs shown, depending on the display. For example,
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.
Color Scaletab to configure the positioning and labelling of the color scale.
Display Visibilitycheckbox to the left of the label can be used to toggle the visibility of that display.
F1, F2, F3* can be used to cycle visibility as follows:
F1key cycles visibility through all non-locked displays, showing one at a time.
F2turns on all non-locked displays.
F3turns off all non-locked displays.
Legendis used to block the effects of the visibility toggling described above. When locked the visibility of a display is not affected by the toggling.
View->Visiblecheckbox menu item in each display control's menu.