The Extrusion Settings group on the Style Settings tab provides functions such as changing the bottom elevation and model extrusion for 2D vector data loaded into a scene.

Bottom Elevation

In a 3D layer of vector dataset type in a scene, all objects are displayed at corresponding positions according to their longitude and latitude coordinates.

Through the combo box to the right of the "Bottom Elevation" label, you can set the elevation value of the object's position from the earth's surface.

Extrusion Height

In a scene, 2D geometric objects in a 3D layer of vector dataset type can be vertically extruded.

Through the combo box to the right of the "Extrusion Height" label, you can set the height by which the object is extruded in the direction perpendicular to the earth's surface, starting from the bottom elevation position.

Operation Steps

1. Enter an appropriate value in the combo box to the right of the Extrusion Height/Bottom Elevation label. Then all objects in the selected 3D layer of vector dataset type will be rendered in 3D according to the corresponding extrusion height/bottom elevation value.
2. In the drop-down list of the combo box, all numeric fields in the dataset attribute table of the selected 3D layer of vector dataset type are listed. If a field is selected, the extrusion height/bottom elevation of objects in the 3D layer can be set to the value of the specified field.

Notes

Only when the current layer is a layer of vector dataset type and the "Altitude Mode" in the "Extrusion Settings" group on the "Style Settings" tab is set to a non-clamp-to-ground mode, can other function controls in the "Extrusion Settings" group be used and all settings be effective.