Mobility (OD Matrix)
The Mobility panel builds a graph from an external origin–destination (OD) matrix, mapping flows between zones onto zone geometries.
Load OD Matrix
| Control | Description |
|---|---|
| OD Matrix File | Path to the OD matrix file (CSV). |
| Load OD Matrix | Loads the file; a badge confirms the loaded file name. |
OD to Graph
Maps the loaded matrix onto zones and builds the flow graph.
| Control | Description |
|---|---|
| Zones | Object holding the zone polygons. |
| Zone ID Column | Column name identifying each zone. |
| Matrix Type | Edge List (rows of source/target/weight) or Adjacency Matrix (square zone×zone). |
| Source Column | Origin-zone column (edge-list format). |
| Target Column | Destination-zone column (edge-list format). |
| Weight Column | Flow magnitude column. |
| Flow Threshold | Minimum flow to include an edge. |
| Directed Graph | Preserve flow direction. |
| OD to Graph | Builds the graph. |
Tip
The default column names (zone_id, source, target, flow) are a common convention, so matrices using them load without extra configuration.
Step-by-step tutorial
For a worked example, follow Map an OD matrix.