> ## 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.

# RS_UpperLeftX

Returns the X coordinate of the upper-left corner of the raster.

<img src="https://mintcdn.com/wherobots/AayJA2u8CknIeTgt/images/sql-functions/RS_UpperLeftX/RS_UpperLeftX.svg?fit=max&auto=format&n=AayJA2u8CknIeTgt&q=85&s=e116e69d18fc2b1691ef8dff19ca41b1" alt="RS_UpperLeftX" width="580" height="320" data-path="images/sql-functions/RS_UpperLeftX/RS_UpperLeftX.svg" />

## Signatures

```sql theme={"system"}
RS_UpperLeftX(raster: Raster)
```

## Parameters

<ParamField body="raster" type="Raster" required>
  The input raster.
</ParamField>

## Return type

<ResponseField type="Double">
  A numeric value.
</ResponseField>

## Example

```sql theme={"system"}
SELECT RS_UpperLeftX(raster) FROM rasters
```

```
5
```