> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/dragonfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/dragonfly-primer/components/6_alternativeweather/uwg_simulation_parameter.md).

# UWG Simulation Parameter

![](/files/-Mihrb4RZIvldcBMzeZ6)

![](/files/-MihraPseK4s3oLXMF7i) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20UWG%20Simulation%20Parameter.py)

Create a simulation parameter object that carries a complete set of Urban Weather Genreator (UWG) simulation settings and can be plugged into the "DF Run Urban Weather Generator" component.

### Inputs

* **run\_period**

A Ladybug Analysis Period object to describe the time period over which to run the simulation. If None, the simulation will be run for the whole year.

* **timestep**

An integer for the number of timesteps per hour at which the calculation will be run. (Default: 12).

* **veg\_par**

A VegetationParameter object to specify the behavior of vegetation in the urban area. If None, generic vegetation parameters will be generated.

* **epw\_site**

A ReferenceEPWSite object to specify the properties of the reference site where the input rural EPW was recorded. If None, generic airport properties will be generated.

* **bnd\_layer**

A BoundaryLayerParameter to specify the properties of the urban boundary layer. If None, generic boundary layer parameters will be generated.

### Outputs

* **sim\_par**

A UWG SimulationParameter object that can be connected to the "DF Run Urban Weather Generator" component in order to specify UWG simulation settings