This command edits the elevation of a grid node by graphically picking the grid corner and entering a new elevation. The grid is a surface model that is represented by a rectangular mesh of grid cells. Each grid cell has four corners with elevation. This command modifies the elevation of one of these grid corners. After picking the grid node to edit, the program draws a temporary X marker on the selected point and shows the current elevation for the point. Before running this routine, a grid (.GRD) file must be created with the Make 3D Grid File command. Also the grid must be drawn on the screen using the Draw Surface >> Draw 3D Grid File command. Besides updating the elevation of the grid in the drawing, the grid file may also be updated. Whether to update the grid file is specified at the first prompt in the program.
Update drawing only (Yes/<No>)? press
Enter Choose between modifying the grid drawing or both the
grid drawing and file.
Select Grid node to edit: pick a grid cell corner
Enter new Grid node elevation <305.519>: press
Enter
Select Grid node to edit: press Enter to
end
Pulldown Menu Location: Surface > Modify Grid File
Keyboard Command: editgrid
Prerequisite: A .GRD File and drawn grid 3D Faces