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2 changes: 1 addition & 1 deletion decision-framework/case-studies.qmd
Original file line number Diff line number Diff line change
Expand Up @@ -141,7 +141,7 @@ The intent mix makes this case a genuine two-way contest, though not in the way
- **Streaming is a visualization property, not a download one.** FlatGeobuf [streams](../flatgeobuf/intro.qmd#streaming-features-is-supported), so features render progressively as they arrive. Valuable, but visualization is absent from this mix.
- **FlatGeobuf wins on whole-row spatial subsetting.** It is row-oriented with a Hilbert R-tree, so every attribute of the features in a bounding box is one contiguous read, where a [column-oriented](../geoparquet/index.qmd#column-oriented) store has to touch every column. The measurements below put this at about 10x faster. It is a real access pattern, but it is not one that this intent mix asks for.

At volume the scale question would matter too, because GeoParquet shards across [multiple files](../geoparquet/index.qmd#multi-file-support) while FlatGeobuf is a single file with a single index. These passes are tiny, so it does not bite here.
At volume the scale question would matter too, because GeoParquet shards across [multiple files](../geoparquet/index.qmd#multi-file-support) while FlatGeobuf is a single file with a single index. The SWOT L2_HR passes are tiny, so the scale question does not matter here.

So GeoParquet wins on download *and* fusion. The product is fixed-schema tabular, with a lake id, a reach id, water-surface elevation, area and more, which is the native fit for its columns and row groups. A sparse Zarr store would add complexity with no gain.

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