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Presentation

Use this dialog to define or edit presentation rules in a standard application layer or survey application layer.

Where do I find the dialog?

Select the application layer (GMI) in the vertical list field, right-click (or double-click), and choose Properties.... Then go to the Presentation tab.

About presentation rules

Application layers in Gemini Terrain are GIS-based. The data in a layer consists of a geometry part (which describes the object's shape and position) and a property part (which describes what the object represents in the real world). The geometry is displayed on the screen using predefined presentation rules. These rules must be linked to values of a property, or a combination of properties. All objects with the same value for the property will have the same presentation on the screen.

Display rules

By default, rules are defined for both 2D and 3D views. It is common for the presentation to differ between the two views; for example, a manhole is shown as a circle in 2D and as a volume object in 3D.

In some cases, you may want to use the same rules in 3D as in 2D. To save time in these cases, you can select Use 2D rules in 3D. This way, you do not need to define the same rules twice.

Survey application layers

Note

Survey application layers have fewer object types (point, line, polygon) than standard application layers. In addition, survey application layers have a fixed presentation setup that shows point status. If you want to define custom presentation rules for point objects, you can do so by checking Allow presentation rules for survey points.

Using the dialog

Procedure

  1. Select whether the presentation rules apply to 2D or 3D
  2. Check the object type you want to create a rule for
  3. Select the method (it is common to use From-To)
  4. Select the field, typically S_FCODE (theme code), to link the presentation to
  5. Enter the desired value or select from the dropdown menu and click Add...
  6. Define the presentation rule for the value, such as line type, color, material, etc., and click OK
  7. Repeat steps 2–6 for all rules you want to define
  8. When you click OK in the main dialog, the presentation rules will be saved to the application layer

Tip

The list will only contain values that exist in the application layer if you check Show only used.

Presenting by multiple properties

It is common to link the presentation to the object's theme code (S_FCODE) or object type (OBJTYPE), but often you want to present by multiple properties.

In Gemini Terrain, you can use a combination of up to four properties (Field1:, Field2:, Field3, and Field4). The presentation rule is then linked to a combination of several values, separated by an underscore (_).

Example

Pipe type VL and pipe dimension 150 gives the value VL_150.

Note

Combining multiple properties is especially useful for statistics. The statistics function for application layers also sorts by the fields set up in this dialog.

Default presentation

The list contains all values that have a presentation rule. All other values will have a default presentation. This is shown in the Default window and can be changed if desired using the Edit... button.

Working with presentation rules

Copying rules

You can also copy presentation rules to save many clicks. Right-click in the list and choose Copy/Paste.

Note

You can only copy between identical object types.

Using templates

With the Get presentation from template... button, you can import a ready-made setup for plan and 3D views. Several templates are available, for example for FKB data.

Warning

When you import presentation rules in this way, the existing content in the list will be replaced by the rules from the template.

Creating your own templates

You can manually define your own presentation setups as described above. If you want to save this setup as a template, you can do so using the Save template... option. This function is found in the Properties tab for application layers.

You can read more about templates for application layers in the user documentation.

Generate values

There is a useful special function for generating from-values directly in the list. A typical example is when you want to set up the presentation for a contour map. In this case, the elevation range will vary from job to job.

Procedure for generating values

  1. Select the lines in the list ([Ctrl]+[A] selects all)
  2. Left-click on the From column (note that the function is only active for numeric values)
  3. Choose Generate values... and enter the interval

Note

The first value selected in the list will be the starting value. The others are generated based on the interval you enter.