What is the Colour Filter Key?

The Key or legend, is the list of the values and their assigned Appearance, that can remain visible while you navigate the 3D.

It also provides a shortcut to re-apply the associated Colour Filter in one click.

How do I Display the Key?

By default, the Colour Filter Key is automatically displayed when a Colour Filter is applied.

You can also display the Key manually from the Colour Filters dialogue or the Colour Filter Configuration Dialogue.

Default Behaviour of the Key

The Key contains the list of all appearances defined for the Colour Filter.

When the corresponding options are activated, it also contains the appearance of the ignored values (identified as <Ignored> or <Other Values> by default) and the appearance of objects with multiple matches (identified as <Multiple Values>).

From the Key you can:

• Click Re-Apply to re-apply the associated Colour Filter
• Open the ... more option menu to
• Toggle the Keep on Top option to force the Key to be visible on top of other windows
• Toggle visibility of the dialogue Borders
• Select the Layout mode from
• BestFit: horizontal or vertical based on the dimensions of the key
• Horizontal: force horizontal layout regardless of the dimensions of the key
• Vertical: force vertical layout regardless of the dimensions of the key
• Click the Save button to save the Key position and size to be restored the next time it is displayed

Customising the Key

The Colour Filter Assistant lets you modify how coloured values are displayed in the Key by renaming and/or hiding some values.

• To group the values with the same appearance under a single label:

• Give the same appearance to all values of the group,
• Change the Name in Key property of one value, and
• Set the Show in Key property of all other values to false

• Applying this same method when using the Gradient option to create ranges, you can group the boundaries values of each range and display as a single range in the Key.