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

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: 775
Latest Activity: 41 minutes 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

Honey Bee daylight error "object has no cenPt" 10 Replies

Hi all.I am a newbie to…Continue

Started by Ron Finney. Last reply by Ron Finney 41 minutes ago.

LookUpFolder_Daylighting error 1 Reply

Hi.The error about "LookupFolder_Daylighting" component was appeared.I set a folder(C:\Grasshopper\study\test) to the working directory.And I found the files in the folder I defined like the…Continue

Tags: studyfolder, LookupFolder_Daylighting

Started by natchan. Last reply by Abraham Yezioro 12 hours ago.

how to assign multiple loads and schedules to a single zone? 3 Replies

For example, in a kitchen there are different equipment and each of them may have its own schedule.So, may I ask how to assign multiple zone loads and schedules to one zone, especially linking the…Continue

Started by Grasshope. Last reply by Apoorv Goyal 20 hours ago.

metal material eroor 2 Replies

Hi.I dont understand this error.According to the sctipt, Specularity values above 0.9 is typical for metal.And "Specularity" is set to 0.9 as in the below drawing.What does this error mean?Thanks.Continue

Tags: roughness, specularity, metal material

Started by natchan. Last reply by Mostapha Sadeghipour Roudsari 22 hours ago.

Ladybug Tweets

Comment Wall


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

Comment by Apoorv Goyal 22 hours ago

Mostapha,the radiation component was not reading input from the selectskymtx component.

There was something going on with updating the components it seems. The problem got solved with a new file. 

Comment by Mostapha Sadeghipour Roudsari 22 hours ago

Hi Apoorv! Nothing look wrong in this image. Can you upload the file?

Comment by Apoorv Goyal 22 hours ago

Whats wrong in this: ?

Comment by Mostapha Sadeghipour Roudsari on Saturday

Hi Alireaza, I created a discussion and answered your question here.

Comment by alireaza rashidfar on Saturday


Hello Friends, someone  could help telling me how can i put theses specific glazing ratios on each surface of this mass

Comment by Chris Mackey on August 23, 2015 at 1:36pm

Hello Everyone,

I just wanted to let all who are following know that the LB+HB link on food4Rhino has been switched to re-route to the dropbox link that Mostapha posted here earlier.  We are currently working out the logistics of a long-term hosting solution but you should continue to point anyone who wants to download LB+HB to food4Rhino for the foreseeable future.


Comment by Chris Mackey on August 22, 2015 at 12:43pm


This is happening to you because you are using an old service release of Rhino 5 that did not have a critical bug fixed in it.  I would recommend updating to the current Rhino service release (SR 12).  If I remember correctly, every service release after SR 6 should have this bug in Rhino fixed.


It looks like this is something that other people have been interested in as well:

It looks like you could probably edit this function in the "run simulation" component to hide the command window:

I don't think this is something that we would implement as a default since I imagine that most people enjoy having a status report on simulations as they run but, if you (or anyone else) edits the code to implement the hiding of the command window as an option, we should definitely integrate it into the current components.

Yay for breaking!


Comment by giraldi77 on August 22, 2015 at 8:39am

Hello Friends, someone i could help telling me because I closed the rhino when i try to connect relative Humidity

Comment by Charles Portelli on August 21, 2015 at 9:47am

the issue below was resolved once i turned off the custom ribbon layout i created. 

Comment by Charles Portelli on August 21, 2015 at 9:09am

Hi All,

I've tried installing ladybug and honeybee on a new computer. I placed the user objects in the correct directory. The appropriate tabs show up in gh but there are no components visible. Any ideas what may be causing this? Thanks


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