Vertices

A vertices step explodes each input geometry into one point feature per vertex (ST_DumpPoints). Source attributes pass through, and each output row gains a numeric vertex_index (0-based within that input feature).

Use for "show me the corners," densify prep, or point-density views of traced lines. Pair with Densify when you need more vertices first, or Simplify when you need fewer.

Inputs

• Source layer. Any geometry type. Null geometries are skipped. The step has no parameters in the derived-layer builder.

Output

• Geometry: point at each vertex (WGS84).
• Properties: source attributes plus vertex_index.
• Row count grows. One polygon with hundreds of corners becomes hundreds of point rows. Dense layers can hit the recipe featureLimit quickly.
• **MULTI* and collections** dump vertices from every part into one flat sequence per input feature (indices reset per source row).

Identity stays on the source global_id; disambiguate vertices with (global_id, vertex_index).

How to use it on its own

From Analyze (guided)

1. Open a data layer and switch to the Analyze tab.
2. Click Vertices for this layer.
3. Optionally edit the title.
4. Click Create derived layer.

The portal creates a private derived layer and opens it. Expect a short server job, not an instant browser result. Dense sources may take longer and produce many rows.

From the new-item wizard

1. New-item wizard → Derived layer.
2. Pick a Source.
3. Add a Vertices step.
4. Save.

Examples

• Parcel corners. Source: parcel polygons. Output: one point per ring vertex with vertex_index.
• Road nodes for sampling. Source: centerlines (optionally densified first). Output: points along each line.

Notes

• No sample-every-Nth control in v1. To thin vertices, run Simplify (or Densify with a larger max segment) before this step.
• Not a topology node layer. Shared edges between adjacent polygons produce duplicate corner points; there is no dissolve of coincident vertices.