Highlight Index Contours

This command will move contours of a specified interval to another layer. This allows the user to change the color or width of a certain interval. This is useful if all the contours had been generated on a single layer, and you wish to display the index contours differently based on a new layer setting.

Prompts

Layer name of existing contours <CTR>: press Enter
Layer name for highlight contours <NCTR>: press Enter
Select Contours to Highlight.
Select objects: Select contours using any standard selection methods.
Select objects: press Enter to conclude selection. The program then sorts and displays the High and Low interval of the selected contours.
Contour increment to highlight: 10
Starting Highlight at elevation <98.0>: 100
Ending Highlight at elevation <152.0>: 150
Assuming we had drawn 1 foot intervals, the above example would move the contours on elevations 100, 110, 120, 130, 140 and 150 to the layer NCTR.

Pulldown Menu Location: Surface >> Modify Contours
Keyboard Command: indexctr
Prerequisite: Contours should be plotted and visible on the screen.