How can I measure the distance/length or planar area on a map in Surfer?

To measure planar area and lengths in Surfer, you can use the Map Measure tool.
  1. Select the map and click Map Tools | Map Tools | Measure.
  2. 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.
  3. Double click to end drawing.
  4. 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:

  1. Select your existing map and click Home | Add to Map | Layer | Empty Base.
  2. Select the new empty Base layer in the Contents window and click Features | Group | Start Editing
  3. In the Features tab and click either Insert | Polyline or Insert | Polygon.
  4. Draw your polyline or polygon over the map. Create as many objects as you wish.
  5. When you are done, press ESC on the keyboard to exit drawing mode.
  6. Click Features | Group | Stop Editing.
  7. Select one of the drawn objects and in the Properties window, click the Info tab. 
  8. Set the Coordinate system to Map or Local and the length and area results are displayed.
  9. 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

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