Использование редактора узлов:

1. Choose the Grid Editor command from the Grid menu and the Open Grid dialog box is displayed. Specify the name of the grid file or USGS DEM file to be edited

2. Click OK and the Grid Node Editor window is displayed. Your grid file is represented by a contour map and the location of each of the grid nodes in the file is marked with a "+".

3. To modify the value of a grid node, use the mouse to click the node to be modified, or use the arrow keys to move amongst the grid nodes.

4. When a grid node is highlighted, the XY coordinates for the node are shown, and the Z value at the point is shown in the edit box below the title bar. To enter a new value, type in the value. If you want to blank a node, type CTRL+B (or use the Blank Node command. If you make a mistake while typing, press the ESC key to return to the original value.

5. When you are done editing the grid, choose the Save As command from the File menu and specify the name for the grid file to be saved. If you want to save the file to the same name, you can choose the Save command.

6. To close the Grid Node Editor window, choose the Close command from the File menu. To move to another window and leave the Grid Editor window open, choose the window from the Window menu.