cartodb-postgresql/doc/CDB_XYZ_Resolution.md
2015-07-01 07:03:13 -07:00

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Markdown

Return pixel resolution of tiles at a given zoom level
#### Using the function
Take a common tile with zoom, z=2,
![2/3/2](https://viz2.cartodb.com/tiles/quantile_breaks/2/3/2.png)
To determine the resolution of these pixels,
```sql
SELECT CDB_XYZ_Resolution(2)
--- Returns a float, 39135.7587890625
```
#### Arguments
CDB_XYZ_Resolution(z)
* **z** integer