Opening an existing bitmap-mask layer

A bitmap-mask layer is a bitmap layer that identifies specific areas to edit. You can apply various operations to update the values of the digital elevation model (DEM) covered by the mask. In the DEM Editing window, you can save the working-mask layer for later re-use.

To open a mask layer saved previously in the DEM Editing window

  1. In the DEM Editing window, on the Edit via Bitmap toolbar, click Open Mask Layer.
  2. In the Select Layer window, in the File list, select the file containing the bitmap layer, or click Browse to find the file.
  3. In the Layers Available list, click the layer containing the vector mask.
  4. Click OK.

    Focus displays the mask layer.

  5. Use the Edit Mask Layer tools to digitize the areas of the DEM that you want to edit.
  6. To save the bitmap-mask layer, click Save.
Parent topic: Working with bitmap masks
Next topic: Creating a new bitmap-mask layer

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