- Select the map and click Map Tools | Map Tools | Measure.
- Click on the map and draw the line or area you want to measure. As you draw, the length and area are displayed in a Measure window that appears.
- Double click to end drawing.
- Press ESC on the keyboard to end measure mode. The item drawn is removed from the map. The Measure window is still open. You can copy/paste the results from that window, change the measurement units, or close it by clicking the red X in the upper right corner.
Alternatively, you can draw polylines and polygons in a base layer over the map. Surfer automatically calculates the length and area for polylines and polygons in a base layer. This works well if you want to measure lengths and areas and want the measured area or line to be displayed on the map. Exact steps are:
- Select your existing map and click Home | Add to Map | Layer | Empty Base.
- Select the new empty Base layer in the Contents window and click Features | Group | Start Editing.
- In the Features tab and click either Insert | Polyline or Insert | Polygon.
- Draw your polyline or polygon over the map. Create as many objects as you wish.
- When you are done, press ESC on the keyboard to exit drawing mode.
- Click Features | Group | Stop Editing.
- Select one of the drawn objects and in the Properties window, click the Info tab.
- Set the Coordinate system to Map or Local and the length and area results are displayed.
- If you wish, you can change the units the geometry fields are displayed in by clicking on the value, then choosing your preferred units from the list.
Updated October 19, 2018