docs/api/sql/Spatial-Statistics/ST_GLocal.md

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# ST_GLocal

Introduction: Runs Getis and Ord's G Local (Gi or Gi*) statistic on the geometry given the `weights` and `level`.

Getis and Ord's Gi and Gi* statistics are used to identify data points with locally high values (hot spots) and low
values (cold spots) in a spatial dataset.

The `ST_WeightedDistanceBand` and `ST_BinaryDistanceBand` functions can be used to generate the `weights` column.

Format: `ST_GLocal(geom: Geometry, weights: Struct, level: Int)`

Return type: `Struct<G: Double, EG: Double, VG: Double, Z: Double, P: Double>`

Since: `v1.7.1`

SQL Example

```sql
ST_GLocal(myVariable, ST_BinaryDistanceBandColumn(geometry, 1.0, true, true, false, struct(myVariable, geometry)), true)
```

Output:

```
{0.5238095238095238, 0.4444444444444444, 0.001049802637104223, 2.4494897427831814, 0.00715293921771476}
```