Using the COGO tool

The Coordinate Geometry (COGO) tool allows you to create polygon and line features with a high degree of accuracy using coordinates, angles and distances. You create features first by entering coordinates of a starting point and then specifying all subsequent changes of direction by supplying angle and distance values from the previous vertex point.

NOTE:

You cannot use the COGO tool to edit existing features—you can only add new features.

1.	If the Map Tools pane is not expanded, in the map viewer, click the Map Tools button.

2.	On the Map Tools pane, click the More Tools button and then click Editing. The Editing window opens.

3.	In the Edit Layer field, select the layer with features you want to edit.

4.	Click the COGO icon . The COGO Tool window opens.

5.	In the X Coordinate field, enter the x coordinate for the first point.

6.	In the Y Coordinate field, enter the y coordinate for the first point.

You can also click the Click the Map button and enter coordinates by clicking the map in the location where you want to create the feature.

7.	In the Angle field, enter the angle for the second point in degrees or radians.

8.	In the Distance field, enter the distance from the first point to the second point in measurement unit selected.

9.	Select an option to signify direction for the third and subsequent points:

•	Measure angle counterclockwise from X-axis.

•	Measure angle clockwise from last traverse line.

NOTE:

The angle of the first line (between point one and two) is always measured counterclockwise from the X-axis.

10.	Click Add Point. A line is drawn on the map that connects the first point to the second point.

11.	Continue and add all points until the line or shape is complete.

12.	Click Finish.

Figure 372 

COGO tool