Before you start
- Export the field as KML, KMZ, GeoJSON or JSON from the other mapping app.
- The coordinates must be WGS84 latitude/longitude (EPSG:4326). AcreTrace does not convert British National Grid yet.
- Imported source vertices have no phone accuracy and do not prove a legal boundary.
Step by step
- 1
Open Field Register
Choose Import KML, KMZ or GeoJSON, then choose the document from Android's file picker.
- 2
Wait while AcreTrace checks it
The file is read on the phone. It is not uploaded and the original document is not copied into AcreTrace storage.
- 3
Check the outline and warnings
Look at the preview and read any message about skipped shapes or inner holes. AcreTrace does not silently guess what a hole means.
- 4
Choose what to import
Untick unwanted polygons, add an optional farm or holding and give every selected boundary a clear field name.
- 5
Confirm the import
The new records appear in Field Register. Each one keeps the source filename, format, import time and a geometry fingerprint locally.
- 6
Add missing internal areas deliberately
If the source contained a hole, open the field and add the relevant woodland, pond, building or other area as an exclusion after checking it.
If you get stuck
If no polygons are found, check that the export contains Polygon or MultiPolygon geometry rather than points or lines.
If the outline is rejected, export again in WGS84/EPSG:4326 rather than British National Grid.
Very large files and unsafe KMZ archives are rejected to protect the phone.