# Gridded Skylight Parameters

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-698044710bbb26128091568f4758c6d310196c68%2FGridded_Skylight_Parameters.png?alt=media)

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-79e497d67a9b708bfc6416e71a12f3e80b839076%2FGridded_Skylight_Parameters.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src/DF%20Gridded%20Skylight%20Parameters.py)

Create Dragonfly skylight parameters with instructions for generating skylights according to a ratio with the base Roof surface.

### Inputs

* **ratio \[Required]**

A number between 0 and 0.75 for the ratio between the skylight area and the total Roof face area.

* **spacing**

A number for the spacing between the centers of each grid cell. This should be less than half of the dimension of the Roof geometry if multiple, evenly-spaced skylights are desired. If None, a spacing of one half the smaller dimension of the parent Roof will be automatically assumed. (Default: None).

### Outputs

* **skylight**

Skylight Parameters that can be applied to a Dragonfly object using the "DF Apply Facade Parameters" component.