For Data Collectors

Requirements

• You need to have an activated account and be able to log in to Acorn Data Collection Tool
• There will need to be existing (submitted) polygons in the area you will visit

Introduction

Preventing overlap is most beneficial when there are existing polygons collected in the area.

There is a risk of measuring the same area twice when using offline data collection tools. This risk increases when the measured area already contains previously collected polygons. In such cases, there is a higher likelihood of measuring a new polygon that overlaps with an existing one.

<aside> 💡 Tip: Even if your new polygon overlaps, you can still submit the farmer to your Project Coordinator - they can then figure out how to proceed. Or fix the overlap yourself.

</aside>

Method 1: Use Mobile Data

If you have mobile data available, existing polygons will be loaded into your map. This means you will see them when you try to:

• Correct an existing polygon
• Measure in a new polygon

Method 2: Download an Offline Map

Alternatively, you can download a map chunk before going on your field trip. Within that chunk, any existing polygons will also be downloaded. Please note that maps will expire and are not updated over time. Therefore, we recommend downloading a map right before your trip. Follow these steps:

1. Open the app.
2. Click on "Offline Maps" in the bottom navigation bar.
3. Find the place you need:
   1. Swipe to navigate, or
   2. Use the search bar to jump to a location.
4. Zoom in or out by pinching your fingers.
5. Enter a name for the map below.
6. Press "Download" to start