To Rub the Raster Data Within a Diagonal Region

1. Click Raster menu RemoveDiagonal Region.
2. Select a starting point for the diagonal region. This point can be any corner of the area you want to remove.
3. Select a second point to define one of the edges of the region you want to remove.
4. A bounding parallelogram is displayed to help you select the next point.
5. Select the third point to remove data within the diagonal rectangle or parallelogram.