A polygon is represented by a closed shape in a Didger project, and can have up to 256 associated IDs. Polygons are composed of straight-line segments defined by vertices, in which the starting and ending vertex is the same. Polygons are shown with a combination of line style, line color, fill pattern, fill color, and Primary ID label. Polygons must have at least three vertices.


This is a polygon object with

line and fill properties.



Drawing a Polygon

To draw a polygon:

  1. Click the Draw | Polygon command, click the button, or press CTRL+G on the keyboard.

  2. The cursor changes to a cross hair cursor to indicate drawing mode.

  3. Enter any information about the polygon, such as the ID, in the Property Manager.

  4. Move the cursor over the location for the start of the polygon and click the left mouse button.

  5. Move the cursor to the next position along the line and click again.

  6. Continue this procedure until you click the final point. Then press the ENTER key.

  7. The first and last points are automatically connected and the new polygon is drawn. To end draw polygon mode, click on another toolbar button or press the ESC key on your keyboard.


Polygons can also be created from polylines using some of the commands in the Draw | Change Boundary Type and Draw | Edit Boundaries sections.


Editing Polygon Properties

The polygon can be edited by clicking once on the polygon to select it.  Polygon object properties are displayed in the Property Manager. Polygon object properties include:

Polygon Item Properties

Data Attributes

Line Properties

Fill Properties

Label Properties


Default Properties

The default line and fill properties are set by clicking the Tools | Project Settings command and clicking on the Line Properties or Fill Properties tabs.


Using a Digitizing Tablet

When using the tablet pointer to digitize a polygon,

  1. Calibrate the tablet by clicking the Draw | Tablet | Tablet Calibration command, or by clicking the image\calibrate.png button.

  2. Activate the tablet by pressing F9 on the keyboard, clicking the image\activate.png button, or clicking the Draw | Tablet | Activate Tablet command.


Drawing Tips



See Also





Digitizing Several Objects

Digitizing Several Objects with Different IDs

Digitizing Several Objects with Sequential IDs

Polygon Markers


Object Properties


Polygon to Polyline