Grid Generator

The Grid Generator creates sampling locations: where to walk to take validation samples.

Open it from the Plugins button (the flask icon at the left of the farm map), which is shown to the farm's Owner, Administrators and Editors on a desktop or tablet. The plugin opens as a full page; Back to farm returns to the map.

#Steps

1. Choose the area. Tick blocks in the list (Select all and Clear are there for long lists), or choose Or use a polygon dataset as your area.
2. Choose the Grid Base:
   • Using a Dataset bases the samples on an existing dataset.
   • Random Points Across Blocks scatters points at random.
   • Even Points Across Blocks spaces them evenly.
3. Set the remaining options the plugin shows for that base, such as the stratification (Non-Stratified, Stratified or Manual) and, for stratified box sampling, the box size (3x3, 5x5 or 7x7).
4. Generate the points and save them to the farm. Collect the samples in the field with a data collector.

#Video

The video was recorded on an earlier version of the plugin, so the screens look different; the idea is the same.