Setting the Visible Range for a Layer

The Filter Settings group of Scene Layer Properties controlled the display range of scene layer.

Figure: Filter Settings
  • Visible Altitude
    • Min Altitude (m): Display and set the minimum visible altitude of the current 3D layer. The model object in the 3D layer would be invisible if the the observation point is lower than the minimum visible altitude.
    • Max Altitude (m): Display and set the maximum visible altitude of the current 3D layer. The model in the 3D layer would be invisible if the the observation point is higher than the maximum visible altitude.
  • Visible Distance
    • Min Distance(m): Display and set the minimum visible distance of the current 3D layer. The model object in the 3D layer would be invisible if the the observation point is lower than the minimum visible distance.
    • Max Distance (m): Display and set the maximum visible distance of the current 3D layer. The model object in the 3D layer would be invisible if the the observation point is further than the maximum visible distance.
  • Visible Size
    • Min Size (px): Display and set the minimum visible pixel value of the model object in the current 3D layer. If the pixel value of a value is less than the specified value, the model will be invisible.

    Note: you can directly type in a value or select the Current Altitude options from the dropdown list to set the altitude of the observation point as the min or max altitude. Click Clear to restore the status. Note that only model layers in the scene can have visible distance and size settings.

  • Filter
    • Figure: Filter
    • Filter: Display and set the visible filter conditions on the current vector layer, and control the display of objects; with this, users can display the objects what they interest and filter out what they do not.

      Click Filter Expression button to display the dialogue as the above figure, users can directly input the SQL expressions as the filter conditions in the textbox bellow Filter tab, click Enter to apply the filter conditions on the layers to make the objects in accordance with the filter conditions invisible. Moreover, users also can create the filter expressions by clicking the button in the right side of the textbox to display the SQL Expression dialogue, and then click OK button to apply the filter conditions to make the layers in accordance with the filter expressions visible. The method to use and create the SQL expressions see:SQL Expression dialogue.