docs/api/sql/Geometry-Accessors/ST_Zmflag.md

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# ST_Zmflag

Introduction: Returns a code indicating the Z and M coordinate dimensions present in the input geometry.

Values are: 0 = 2D, 1 = 3D-M, 2 = 3D-Z, 3 = 4D.

![ST_Zmflag](../../../image/ST_Zmflag/ST_Zmflag.svg "ST_Zmflag")

Format: `ST_Zmflag(geom: Geometry)`

Return type: `Integer`

Since: `v1.6.1`

SQL Example

```sql
SELECT ST_Zmflag(
        ST_GeomFromWKT('LINESTRING Z(1 2 3, 4 5 6)')
)
```

Output:

```
2
```

SQL Example

```sql
SELECT ST_Zmflag(
        ST_GeomFromWKT('POINT ZM(1 2 3 4)')
)
```

Output:

```
3
```