Rectangle and lasso selection can intersect thousands of features. That is expected — the Selected tab and server-paged table are the authoritative surfaces, not a full GeoJSON download.
Run a selection
- Choose the rectangle or lasso tool from the map toolbar.
- Draw the selection area across one or more visible layers.
- Wait for the centered Selecting features… pill until highlights finish rendering.
- Review counts and the first table page in the Selected experience.
How highlights render
- Up to 5,000 matches per layer — GeoJSON highlights on the map.
- More than 5,000 matches per layer — vector tiles via the selection tile protocol. GeoJSON and MVT highlights are never mounted together for the same layer.
Clear Selection stays available
While highlights remain, Clear Selection stays visible even if you switch to Pan or another tool. It uses a latched bordered style so you can exit the selection tool without losing the ability to clear.
During an edit session
When pending deltas exist, selection skips the selection-index fast path and uses the merged snapshot + deltas path. Results stay correct but may take longer until you close the edit session and rebuild artifacts.
Common errors
- Highlights never appear — wait for the selecting pill to finish; very large selections use MVT and need an extra moment.
- Table feels incomplete — page through the server table; the map does not download every geometry for the attribute view.
- Stale highlights after edits — close the edit session so selection index and tiles rebuild, then re-run the selection.
FAQ
Why is the Selected count so large?
Unbounded selection counts are normal for wide rectangles over dense layers. Use filters or a tighter draw if you need a smaller working set.
Does Clear Selection leave edit mode?
No. Clearing highlights does not end an edit session.