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ladybug-tools

68 indexed repositories · View on GitHub

butterfly
:butterfly: A light python API for creating and running OpenFoam cases for CFD simulation.

Python · 263 stars
ladybug
🐞 Core ladybug library for weather data analysis and visualization

Python · 228 stars
ladybug-legacy
:beetle: Ladybug is an environmental plugin for Grasshopper.

Python · 204 stars
honeybee-legacy
:bee: Honeybee is a free and open source plugin to connect Grasshopper3D to EnergyPlus, Radiance, Daysim and OpenStudio for building ener...

Python · 130 stars
honeybee
:honeybee: A python library to create, run and visualize radiance studies. Core library of Honeybee[+].

Python · 96 stars
uwg
:city_sunrise: The Urban Weather Generator (uwg) is a Python application for modeling the urban heat island effect.

Python · 85 stars
lbt-grasshopper
:green_book: Collection of all Ladybug Tools plugins for Grasshopper

Python · 81 stars
ladybug-blender
:beetle: :orange_book: Ladybug plugin for Blender

Python · 53 stars
spider
:spider_web: 3D interactive analysis in your browser mostly written around the Three.js JavaScript library

HTML · 51 stars
ladybug-grasshopper
🐞 :green_book: Ladybug plugin for Grasshopper

Python · 47 stars
lbt-grasshopper-samples
:pushpin: :pushpin: :pushpin: A repo that houses all of the sample files that ship with LBT Grasshopper

45 stars
dragonfly-legacy
:bug: Legacy dragonfly plugin for large-scale climate and urban heat island modeling.

Python · 43 stars
epwmap
⛅️ map of available .epw weather files

HTML · 37 stars
honeybee-energy
🐝 :fire: Honeybee extension for energy simulation

Python · 36 stars
ladybug-dynamo
:beetle: :blue_book: Ladybug library and plugin for DynamoBIM

Python · 32 stars
ladybug-geometry
🐞 📦 A library with geometry objects used throughout the Ladybug Tools core libraries

Python · 32 stars
honeybee-core
:honeybee: honeybee core library for working with detailed building geometry

Python · 24 stars
3d-models
A collection of 3d models of buildings.

JavaScript · 23 stars
spider-covid-19-viz-3d
Speedy access to the latest, local COVID-19 data with a familiar interface: the Globe

JavaScript · 22 stars
spider-gbxml-tools
Scripts to help you view and manage gbXML files

JavaScript · 19 stars
48 more repositories live on View on GitHub

Beginner friendly Everything

Open All

Eventually swich text module over to using native Rhino/Grasshopper Text Objects Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ladybug-tools/ladybug-rhino#387 · Opened Aug 12, 2026
Bug: generate() ignores custom ref_bem_vector and ref_sch_vector passed through from_param_args() Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

ladybug-tools/uwg#291 · Opened Aug 3, 2026
Unable to turn off HVAC cooling in UWG Python (Southern Hemisphere summer): No temperature changes in output EPW Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ladybug-tools/uwg#290 · Opened Aug 1, 2026
Failure case on a 4 edges concave shape Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

ladybug-tools/ladybug-geometry-polyskel#243 · Opened Jul 24, 2026
_read_sensor_grid_result loads wrong result file when one grid id is a prefix of another (unsorted listdir prefix match) Open

ladybug-tools/honeybee-display#59 · 1 assignee · Opened Jul 24, 2026
Add HVAC templates for Constant Volume systems Open

enhancement

ladybug-tools/honeybee-energy#1131 · 1 assignee · Opened Apr 17, 2026
hvac modelling -> through simple yaml declaration Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

ladybug-tools/honeybee#503 · Opened Apr 4, 2026
Luigi port may cause conflicts with some programs. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ladybug-tools/lbt-recipes#478 · Opened Mar 13, 2026
In LBT 1.10, there are two LB Export User Object components. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ladybug-tools/honeybee-grasshopper-core#384 · Opened Mar 12, 2026
Skeleton edges cross mid-edge for complex non-convex polygon Open

ladybug-tools/ladybug-geometry-polyskel#242 · 3 comments · 1 assignee · Opened Dec 16, 2025
Wind speed value Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ladybug-tools/butterfly#438 · Opened Dec 11, 2025
BlueCFD does not have neighbour cell face Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ladybug-tools/butterfly#437 · Opened Dec 10, 2025
BlockMesh - docker-machine misspelled or could not be found. Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

ladybug-tools/butterfly#436 · 1 comment · Opened Oct 23, 2025
Open Studio not working (not finding HB or the sim folder Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

ladybug-tools/lbt-grasshopper-samples#4 · Opened Sep 23, 2025
Web BSDFViewer - can we get tensor tree functionality? Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

ladybug-tools/honeybee#502 · Opened Aug 15, 2025
IDF files Open

Difficulty 2/5 1-3 hours Newbie friendliness 20/100

ladybug-tools/spider-2020#20 · Opened Jul 21, 2025
Licensing Ladybug for FreeCAD Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

ladybug-tools/ladybug#640 · 1 comment · Opened Jun 9, 2025
smart dynamic shading system Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

ladybug-tools/ladybug#636 · Opened Apr 27, 2025
Implement GPU Acceleration & Performance Cues for UTCI Polynomial Calculation Open

new development wish

ladybug-tools/ladybug-comfort#382 · 2 comments · 2 assignees · Opened Feb 19, 2025
operators context new syntax 4.0+ blender Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ladybug-tools/ladybug-blender#48 · 3 comments · Opened Jan 14, 2025
Radiance install not compatible with current version of macOS Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ladybug-tools/lbt-grasshopper#1321 · Opened Nov 29, 2024
Extending HB-E Boundary Conditions? Open

ladybug-tools/honeybee-energy#1049 · 9 comments · 1 reaction · 1 assignee · Opened Nov 10, 2024
Inconsistency in uwg Version 5.3.4 Across Different Builds Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ladybug-tools/uwg#288 · Opened Oct 30, 2024
[feature request] Replacement of legacy ```Ladybug_Line Chart``` Open

wish

Difficulty 5/5 Over a week Newbie friendliness 20/100

ladybug-tools/ladybug-grasshopper#392 · 1 comment · Opened Oct 26, 2024
Clarification on Energy Consumption Calculation in UWG (Bueno Unzeta, 2010) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ladybug-tools/uwg#287 · Opened Oct 24, 2024
Add Attributes and Schedules to People Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ladybug-tools/honeybee-energy#1043 · 4 comments · Opened Oct 13, 2024
Add Optional Steps for Daylight Controls Open

new development wish

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ladybug-tools/honeybee-energy#1042 · Opened Oct 9, 2024
Change convective heating transfer coefficient for windows Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ladybug-tools/honeybee-energy#1031 · 2 reactions · Opened Aug 19, 2024
Handling of overlapping opening and parent surface polyloops Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ladybug-tools/spider-gbxml-tools#55 · 1 comment · Opened Jul 15, 2024
Infiltration per exterior area Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ladybug-tools/honeybee-core#618 · Opened Jul 1, 2024
Node LB Out is missing from Ladybug -> Viz nodes subcategory Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ladybug-tools/ladybug-blender#47 · 2 comments · 2 reactions · Opened May 30, 2024
Butterfly installation Open

Difficulty 3/5 1-2 days Newbie friendliness 15/100

ladybug-tools/butterfly#434 · Opened May 29, 2024
Simulation only loops once in Butterfly and snappyHexMesh fails to create joined mesh Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ladybug-tools/ladybug-legacy#500 · Opened May 21, 2024
Add an option to change `HeatBalanceAlgorithm` property in idf Open

new development

ladybug-tools/honeybee-energy#1008 · 1 comment · 1 assignee · Opened Apr 24, 2024
Mysterious 1.4 coefficient in UBLDef Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ladybug-tools/uwg#284 · Opened Apr 22, 2024
Butterfly Help WindowsError Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ladybug-tools/butterfly#433 · 2 comments · Opened Apr 17, 2024
Account for Material Emissivity in Longwave Temperature Map Open

new development

ladybug-tools/ladybug-comfort#364 · 1 assignee · Opened Mar 23, 2024
Butterfly Python API documentation link broken. Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

ladybug-tools/butterfly#432 · Opened Mar 22, 2024
clean_string re.sub() misses removing hyphen from strings Open

ladybug-tools/honeybee-core#601 · 1 assignee · Opened Mar 20, 2024
Add an option for CO2 setpoint to the honeybee_energy.load Setpoint class Open

new development

ladybug-tools/honeybee-energy#1000 · 1 comment · 1 assignee · Opened Mar 6, 2024
Conflict with Pyrevit in Rhino Inside Revit Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

ladybug-tools/ladybug#611 · 1 reaction · Opened Feb 27, 2024
Installation does not show Ladybug addon - Installation instructions in README.md do not fit anymore. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ladybug-tools/ladybug-blender#43 · 1 comment · Opened Feb 11, 2024
Move DF Reassign Energy Properties to the Create Tab Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

ladybug-tools/dragonfly-energy#822 · Opened Jan 10, 2024
is_user_admin function in new Rhino-8 .NET 7 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ladybug-tools/ladybug-rhino#321 · Opened Jan 9, 2024
Speeding up the 'Label Faces' component? Open

enhancement

ladybug-tools/honeybee-grasshopper-core#334 · 1 reaction · 1 assignee · Opened Dec 11, 2023
The link to my PhD at MIT is not correct Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

ladybug-tools/uwg#283 · Opened Nov 10, 2023
Implement of STI in Ladybug Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ladybug-tools/ladybug-comfort#361 · Opened Oct 30, 2023
Implement of PT** in Ladybug Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

ladybug-tools/ladybug-comfort#360 · Opened Oct 30, 2023
Implement "classic PET" again in Ladybug Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ladybug-tools/ladybug-comfort#359 · Opened Oct 30, 2023
Implement GOCI in Ladybug Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ladybug-tools/ladybug-comfort#358 · Opened Oct 30, 2023

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