> 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/0_create/join_small_rooms.md).

# Join Small Rooms

![](/files/U32AEvw9aybVy5ucLznm)

![](/files/UqO8Tbj7oxQGFB2p7MQt) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Join%20Small%20Rooms.py)

Join small Room2Ds together within Dragonfly Stories.

This is particularly useful after operations like automatic core/perimeter offsetting, which can create several small Room2Ds from small segments in the outline boundary around the Story.

### Inputs

* **df\_obj \[Required]**

A Dregonfly Story, Building or Model to have its small Room2Ds joined together across the model

* **area\_thresh**

A number for the Room2D floor area below which it is considered a small room to be joined into adjacent rooms. (Default: 10.0 square meters).

* **join\_to\_large**

A boolean to note whether the small Room2Ds should be joined into neighboring large Room2Ds as opposed to simply joining the small rooms to one another. (Default: False).

### Outputs

* **report**

Reports, errors, warnings, etc.

* **df\_obj**

The input Dragonfly objects with Room2Ds that have had small Room2Ds joined together.