algorithmic modeling for Rhino


Ladybug + Honeybee

Ladybug and Honeybee are two open source environmental plugins for Grasshopper to help designers create an environmentally-conscious architectural design.

Installation Instructions

Download Ladybug and Honeybee

Remove Old Version

Ladybug PrimerHoneybee Primer

Example Files for Ladybug

Example Files for Honeybee

Ladybug on GitHub

Honeybee on GitHub

Use this Reference for your Publications.

Licensed under @license GPL-3.0+

Read more here

Members: 966
Latest Activity: 1 hour ago


What is Ladybug?

Ladybug is an open source environmental plugin for Grasshopper3D that helps architects and engineers create an environmentally-conscious architectural design.  Ladybug imports standard EnergyPlus Weather files (.EPW) into Grasshopper and provides a variety of 3D interactive graphics to support the decision-making process during the initial stages of design.

What is Honeybee?

Honeybee connects Grasshopper3D to EnergyPlus, Radiance, Daysim and OpenStudio for building energy and daylighting simulation.The Honeybee project intends to make many of the features of these simulation tools available in a parametric way.

You can get started by watching this video:

Here are four separate playlist:

Want to see a full presentation?

Check out this presentation or watch it: Part1Part 2

And this video here:

Discussion Forum

Infiltration model in Honeybee 1 Reply

Hi there!I am trying to validate some results i get from a honeybee energy simulation, and i am getting high discrepancies whenever i turn on the infiltration (meaning the air-leakage, unwanted…Continue

Started by Iason Bournas. Last reply by Iason Bournas 1 hour ago.

error on the Run Daylight Simulation component for the sky view workflow 9 Replies

Dear Chris,I got the following error using your sky view workflow on Hydya by replacing the geometry with mine:…Continue

Started by Grasshope. Last reply by Grasshope 4 hours ago.

[discussion] Sky View Factor

Dear bee and bugs,I'd like to share and discuss with you my understanding of Sky View Factor, considering that it is an import concept frequently misunderstood.Sky View Factor is first and foremost…Continue

Started by Grasshope 4 hours ago.

Reoccuring errors in my script 3 Replies

Hey there, I've experienced a number of small errors in my script that is reoccuring.1) I'm told to "let Honeybee fly" every single time I open the script. 2) After "let Honeybee fly" then I normally…Continue

Tags: reoccuring, errors, Honeybee

Started by Nickolaj Feldt Jensen. Last reply by Igor Mitrić Lavovski 5 hours ago.

Ladybug Tweets

Comment Wall


You need to be a member of Ladybug + Honeybee to add comments!

Comment by Mohamed Elbangy yesterday

Thank you, it is helpful (Y) 

Comment by Mostapha Sadeghipour Roudsari yesterday

@Mohamed. See this discussion. You need to update the example files though.

Comment by Mohamed Elbangy yesterday

Thank you so much, I reviewed these scripts and already downloaded them, but I was looking for the same examples files trying to track the workshop videos, because I am so new to grasshopper

Comment by Abraham Yezioro on Monday

I will look at the hydra place. There are some examples regarding the video you are asking: 1, 2, 3


Comment by Mohamed Elbangy on Monday


Does anyone know where exactly can I find the example files for this workshop related to honeybee or at least for this video

Thank you

Comment by Antonello Di Nunzio on January 27, 2016 at 9:43am

@Bao, for your issue open a new discussion and/or upload your file. Thanks. I can't download your Shade Definition, it seems empty

Comment by kimia farahnak on January 19, 2016 at 5:14am

hi guys,is there a way to calculate sunrise and sunset hour with these components in for example 1st of jan?(for example it says that we have daylight from 6am to 18pm in 1st of jan so i can compare it with occupancy time in a daylight rose

Comment by Niya S. on January 18, 2016 at 9:23am
Comment by Mostapha Sadeghipour Roudsari on January 18, 2016 at 8:20am

Hi Niya, Open a discussion for this issue and we can discuss the possible solutions. Probably gendaymtx.exe is blocked and you need to unblock it and then try Abraham's suggestion. For questions about Radiance and Dysim please open a discussion. Honeybee doesn't install or uninstall Radiance, Daysim or any other analysis software on your machine.

Comment by Niya S. on January 18, 2016 at 4:52am

I have noticed that Radiance and Daysim disappear after being installed on C drive. I had to manually set the raypath and path in the Env.settings and User sett.

Could the problem come from here? Even though in the script ahead I was not using honeybee.??


Members (966)



Search Grasshopper


  • Add Photos
  • View All


  • Add Videos
  • View All

© 2016   Created by Scott Davidson.   Powered by

Badges  |  Report an Issue  |  Terms of Service