Prescription Maps Reference

This is the full reference for the Map Prescription module. If you're new to the workflow, start with Getting Started for Agronomists. This page is the deep-dive.

The home page#

Map Prescription in the sidebar opens the home page, which has two tabs:

Prescription Maps tab#

Lists every saved prescription map for the active account. Each card shows:

• The map's title
• Source: Satellite image / Drone image
• A placeholder value (e.g., crop type, season) when set
• Actions: Download Shapefile, View Prescription Map

A Create New card opens the wizard.

Photogrammetry tab#

Lists every drone-imagery processing job for the account. Each card shows:

• Status: Pending, Uploading, Queued, Processing, Completed, Failed, Canceled
• A filter lets you scope by status.
• The View in Map action opens the processed scene in the prescription wizard.

When the tab is empty, you'll see "No drone processing jobs yet. Upload images to create a prescription map."

The wizard#

The wizard is a right-side drawer with three top-level steps:

#	Step	Subtitle
1	Select Farm & Field	Choose your farm and field
2	Define Plot	Draw the perimeter
3	Processing	Drone or satellite image

Step 1 — Select Farm & Field#

• Farm dropdown: pick an existing farm or Add New Farm.
• Field dropdown: pick an existing field or Draw new field.
• When drawing, the map enters drawing mode. Click to place vertices; click the first vertex again to close the polygon.

Step 2 — Define Plot#

• Plot dropdown: pick existing or Create new plot.
• When creating, click Draw plot, draw the polygon (must lie inside the field), and click again to close.
• The portal validates: The plot must be drawn entirely within the field boundary. Please try again. If invalid, redraw.
• Save with name, crop type (Soybean / Corn / Wheat / Cotton / Sugar cane / Coffee / Rice / Beans / Other), and season.

Step 3 — Processing#

Toggle between Satellite and Drone (OTM) with the source selector at the top of the panel.

Satellite source#

• Search Satellite Image — fetches the most recent acceptable scene.
• View mode toggle: True Color ↔ NDVI (Health).
• Info card: Date/Time, Cloud Cover, Platform.
• NDVI legend with four categories:
  • Bare soil / Severe stress (< 0.2)
  • Moderate stress (0.2–0.4)
  • Good vegetation (0.4–0.6)
  • Optimal vegetation (> 0.6)

If no scene is available you'll see: No recent satellite image found for this area. Try adjusting your plot or try again later.

Drone source#

• Upload Drone Images opens a drawer for selecting farm/field and dragging in images.
• Once submitted, you'll see: Your images have been submitted for processing. Track progress in the Photogrammetry tab.
• After processing completes, pick the dataset from the Processed Images dropdown.
• A validation runs: if the orthomosaic doesn't overlap the plot, you'll see The processed drone image does not overlap with the selected plot. Please select a different image or adjust the plot boundary.

Save & Proceed#

Click Save & Proceed to open the Zone Editor.

The Zone Editor#

A larger drawer with three sub-steps:

#	Step
1	Configure Zones
2	VRA Prescription
3	Product Estimate

Configure Zones#

• Zones count: Low / Medium / High.
• Method:
  • K-Means — equal-frequency clustering by NDVI similarity.
  • Jenks Natural Breaks — minimizes intra-class variance.
  • Quantile — equal-sized groups by area.
  • Equal Interval — equal NDVI ranges per zone.
• Block size (m): 3–50 meters. The portal validates the bounds.
• Prescription preset:
  • Recovery — apply more where NDVI is low.
  • Maintenance — apply more where NDVI is high.
  • Neutral — uniform rates.
• Generate Zones Automatically runs the clustering.

VRA Prescription#

Shown after zones are generated:

• Statistics: Zones, Avg NDVI, Min NDVI, Max NDVI.
• Edit Zones tools: select, redistribute, merge, paint, draw exclusion.
• Bulk Editing panel: applies a single rate to highlighted blocks.
• VRA Prescription card: switch between Spraying and Spreading mission types.
• Classification Thresholds:
  • Lower — NDVI < value → Zone 1 (Bare Soil / Low Vigor)
  • Upper — NDVI ≥ value → last zone (High Vigor)
• Application rate by zone with editable rate per zone (units depend on mission type).
• Generate VRA Prescription finalizes.

Product Estimate#

• Total Area of the prescription.
• Required Product — total volume or mass.
• Estimated Flights — rough estimate.
• Avg. rate across the field.
• Download Shapefile (.zip).
• Save this project — coming soon.

The map tools palette#

While drawing or editing on the map you have:

• Draw Boundary — Click on the map to add points. Click the starting point to close the polygon.
• Select / Correct — Click a polygon to select it. Press Delete to remove it.
• Select Blocks — Drag a box around multiple polygons to select them.
• Move Points — Drag vertices to modify the shape. Press Alt + Click on a vertex to delete it.

The tip line Use "Select" to delete incorrect drawings appears under the tools palette.

Layer controls#

Always visible:

• Satellite (Base) — background imagery.
• Labels overlay.
• Satellite (True Color) / Satellite (NDVI) when a satellite scene is loaded.
• Drone (True Color) / Drone (NDVI) when a drone orthomosaic is loaded.
• Field Boundary, Plot Boundary — drawn polygons.
• Generated Zones — VRA polygons after generation.

Each layer can be toggled and its opacity adjusted.

Exclusion zones#

In the VRA step, use Draw Exclusion Zones to mark areas where no product should be applied (waterways, headlands, sensitive plots). Tools available:

• Draw Exclusion Zone
• Undo last zone
• Clear all zones
• Done — finalize

The counter shows "N exclusion zones drawn".

Common pitfalls#

• Plot outside the field: the portal blocks the save. Redraw smaller or pick a larger field.
• No satellite scene found: try again later or use drone imagery.
• Drone orthomosaic doesn't overlap plot: the wrong dataset was picked. Reselect from the Processed Images list, or capture new imagery covering the plot.
• Zones look noisy: increase block size (e.g., from 5m to 10m).

Related#

• VRA and zones
• Satellite vs. Drone Imagery
• Exporting shapefiles
• Map Prescription feature reference