When you are done, select and right-click on the route, and click Close Route. Switch to the Route Tool, and click on each waypoint to connect them together into a route which traces the boundaries of the field. If you have previously used your GPS to mark waypoints at the corners of your field, click Receive from GPS to bring them into ExpertGPS. Follow the directions above, starting with Close Track.Ĭalculating Area of a Field Marked with Waypoints Back at your computer, click Receive from GPS, and ExpertGPS will bring in the track outlining your field. If you need to switch between acres, square feet, hectares, or other units of measure, click Preferences on the Edit menu, and change the Distance Units.Ĭalculating Area from a Recorded GPS TracklogĪnother way you could trace the boundaries of your field would be to take your GPS out and walk or drive the edge of the field, recording a GPS track. ExpertGPS will calculate the area of your field (and all the other closed tracks in the Track List) and display it. Click Select Columns on the List menu, and make sure Area is checked. On the left side of the screen, switch to the Track List. You’d use this command any time you were drawing a field, paddock, or stock pond. This tells ExpertGPS to treat this object as a closed shape. Now switch to the Select tool, and click on the track of your field to select it. When you’ve traced your way around the entire field, press Enter to finish the track. If there’s an irregular edge, along a road or creek, click and drag the mouse, tracing that edge. The track tool draws straight lines when you click. Click once on the corner of your field, and continue clicking at each corner, working your way around the field. Click Show Aerial Photo Map on the Map menu, which should give you a pretty good view of your fields. ExpertGPS will recenter the topo map on your farm. Click Go to Address on the Go menu, and type in the address of your farm. Download and install ExpertGPS, and start the program. The first step is to bring up an aerial photo of your farm. ExpertGPS will automatically calculate the area of any object you draw on the map or mark with your GPS. You can use ExpertGPS to calculate the area of any field on your farm, and you don’t need your own topo map (or even a GPS receiver) to do this. How do I Calculate the Area of a Farm Field? Please forgive my ignorance but I just need an application that would allow me to know exactly the area in a big farm that may have for example, corn or soy, etc. This is the application I need because I have a GPS receiver that does not calculate area but if I understand correctly I can mark different waypoints in my farm (not a perfect square) and then download them to your software and then I get the area? Do I need a topo map of my farm to do this? You claim that your software can calculate an area.
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