Polygon drawing app for area, perimeter, parcel and field mapping
A polygon is the practical way to describe a closed field area for area, perimeter and delivery.
Field takeaways
- A polygon is a closed boundary used for area and perimeter.
- Area changes when corners are missing or wrong.
- Parcel polygon and actual use polygon may differ.
- MapLab Survey keeps polygon drawing, photo notes and exports together.
- KML, DXF, GeoJSON and reports serve different delivery needs.
Close the ring
An open polygon gives a wrong area and a wrong perimeter. Most apps close it automatically between the last and first vertex, which can quietly cut a corner you meant to include.
Vertices where the shape changes
Place points where the boundary turns, not at fixed intervals. A polygon with a thousand redundant vertices is harder to use than one with twenty well-chosen ones, and it exports badly into CAD.
Do not cross the edges
A self-intersecting polygon produces an area that no software agrees on. If the number looks impossible, look at the shape before you doubt the arithmetic.
Record the system
Write the coordinate system next to the area, or the figure cannot be checked by anyone else.
Try these steps on your own phone.
MapLab Survey handles RTK/GNSS point capture, drawing, area and volume calculations and coordinate conversion, then exports to DXF, KML/KMZ, GeoJSON, Shapefile, GeoPackage, NCZ or CSV. Capture, calculation and export work offline. Live NTRIP corrections and online basemaps need a connection.
Frequently asked questions
What is polygon drawing for?
Recording closed boundaries, area and perimeter.
Is a polygon the same as a line?
No.
Is a parcel polygon official?
Not by itself.
Can MapLab Survey export polygons?
Yes, through field data export workflows.
Technical references
The field guidance in this article is aligned with the technical and official references below.
Related: Area measurement app · Walk field boundary · QGIS NetCAD AutoCAD export · MapLab Survey