FieldAtlas
Digitize, edit, analyze and export β all in the browser.
Location
Background layers
Toggle via the layer switcher on the map, or pick a default here.
Reference grid & scale
Upload study area
Accepts GeoJSON (.geojson/.json) or KML (.kml). Loaded boundary drives NDVI, elevation grid and print extent.
Digitizing tools
Use the draw toolbar (top-left of map) to add points, lines and polygons. Every feature appears in the attribute table below for editing.
Attribute table / database
| Name | Category | Notes |
|---|
Export
Editable legend
Define categories and colors. Assign a category to each feature from the attribute table's Category dropdown β the map symbol updates automatically.
Shortest path analysis
Click Start, then click a start and end point on the map (routes over the real road network via OSRM). Only one map click-tool (Route / Tree plotting / Rainfall points) can be active at a time β starting this one turns the others off.
Auto NDVI
No file upload needed β this pulls a live NDVI composite straight from NASA GIBS (MODIS Terra, 8βday) for whatever the map is currently showing, auto-framed to your study area.
Elevation profile
Draw a line with the digitizing tool (Digitize tab), select it below, then generate a profile.
Elevation & slope map
Samples a grid of elevation points across your study area (or current map view) and renders elevation and slope surfaces.
Tree / plot inventory
Plot individual trees on the map, then draw a stand boundary polygon with the Digitize tool to compute per-hectare stand statistics. Only one map click-tool (Route / Tree plotting / Rainfall points) can be active at a time.
| Species | DBH (cm) | Ht (m) | Lat | Lng |
|---|
Stand statistics
Canopy cover (from NDVI)
Requires an NDVI layer loaded on the NDVI tab. Samples the NDVI colour ramp across the selected stand boundary (or the loaded study area if no boundary is picked).
Streams & riparian buffers
Digitize a stream centerline with the Digitize tool (a line), then generate a buffer around it here.
Catchment / watershed area
Rainfallβrunoff estimate
Choose how land-use / land-cover (LULC) is defined for the catchment: enter classes manually with area shares, or upload an LULC polygon file and assign a class to each uploaded feature.
| Land use | % area | C |
|---|
Flood inundation preview
Uses the elevation grid from the Terrain tab β build it there first.
Point rainfall lookup
Click the map to add rainfall sample points (Open-Meteo, past 7 days + 3-day forecast, no key needed). Add 2+ points to build an interpolated surface. Only one map click-tool (Route / Tree plotting / Rainfall points) can be active at a time β starting this one turns the others off.
| Point | Past-7d (mm) |
|---|
Rainfall interpolation surface
Inverse-distance-weighted (IDW) surface built from the points above, using the past-7-day total. Sampled across the loaded study area, or the current map view if none is loaded.
