> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wherobots.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ST_MMin (Python)

> Return the minimum M coordinate of a geometry.

Return the minimum M coordinate of a geometry.

SQL reference: [`ST_MMin`](/reference/wherobots-db/geometry-data/bounding-box/ST_MMin)

## Signature

```python theme={"system"}
from sedona.spark.sql.st_functions import ST_MMin

ST_MMin(geom: ColumnOrName) -> Column
```

## Parameters

<ParamField path="geom" type="ColumnOrName" required />

## Returns

<ResponseField name="return" type="Column">
  Minimum M coordinate for the geometry as a double column.
</ResponseField>


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