# Latest

**URL:** https://discourse.ladybug.tools/latest.md

[Latest](https://discourse.ladybug.tools/latest.md) · [Categories](https://discourse.ladybug.tools/categories.md) · [Tags](https://discourse.ladybug.tools/tags.md)

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## [Welcome to Ladybug Tools forum](https://discourse.ladybug.tools/t/welcome-to-ladybug-tools-forum/8)

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**Author:** [@system](https://discourse.ladybug.tools/u/system)\
**Replies:** 0\
**Last updated:** [September 16, 2017, 5:08pm UTC](https://discourse.ladybug.tools/t/welcome-to-ladybug-tools-forum/8 "2017-09-16T17:08:43Z")

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Ladybug Tools is a collection of open source applications and integrated workflows that support the analysis and improvement of the built environment’s performance. The main goal of this forum is to help the Ladybug To…

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## [HB: inner floors are identified as Air walls](https://discourse.ladybug.tools/t/hb-inner-floors-are-identified-as-air-walls/40848)

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**Author:** [@Snehal](https://discourse.ladybug.tools/u/Snehal)\
**Replies:** 1\
**Last updated:** [November 1, 2026, 4:01am UTC](https://discourse.ladybug.tools/t/hb-inner-floors-are-identified-as-air-walls/40848 "2026-11-01T04:01:20Z")

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2026.10.12\_InClim\_pro.gh (1 2026.10.12\_InClim.3dm (353.5 KB) 13.0 KB) These are files In this layer you will find sublayers under the Air Room layer. because I want to make the clusters of the air room. because…

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## [OpenStudio: Extremely high cooling load compared to heating load in a cold climate (Rochester, MN, Zone 6A)](https://discourse.ladybug.tools/t/openstudio-extremely-high-cooling-load-compared-to-heating-load-in-a-cold-climate-rochester-mn-zone-6a/40894)

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**Author:** [@hyhgg](https://discourse.ladybug.tools/u/hyhgg)\
**Replies:** 0\
**Last updated:** [October 31, 2026, 7:58pm UTC](https://discourse.ladybug.tools/t/openstudio-extremely-high-cooling-load-compared-to-heating-load-in-a-cold-climate-rochester-mn-zone-6a/40894 "2026-10-31T19:58:10Z")

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Hello everyone, I’m a university architecture student working on a building energy simulation project using OpenStudio and EnergyPlus. I’m experiencing an unusual result: the annual cooling load is approximately 19.6 t…

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## [HB Blend ProgramTypes produces inconsistent schedules](https://discourse.ladybug.tools/t/hb-blend-programtypes-produces-inconsistent-schedules/40885)

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**Author:** [@gzorzeto](https://discourse.ladybug.tools/u/gzorzeto)\
**Replies:** 0\
**Last updated:** [October 29, 2026, 5:07pm UTC](https://discourse.ladybug.tools/t/hb-blend-programtypes-produces-inconsistent-schedules/40885 "2026-10-29T17:07:31Z")

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Hi everyone, I’ve been comparing multi vs single-zone models, and I might have spotted a problem with the HB Blend ProgarmTypes component. I think the averaging method works fine for the design load capacities, but fail…

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## [HB Subface Subset dose not work for windows](https://discourse.ladybug.tools/t/hb-subface-subset-dose-not-work-for-windows/40813)

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**Author:** [@Aliarch](https://discourse.ladybug.tools/u/Aliarch)\
**Replies:** 2\
**Last updated:** [October 28, 2026, 8:11am UTC](https://discourse.ladybug.tools/t/hb-subface-subset-dose-not-work-for-windows/40813 "2026-10-28T08:11:11Z")

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Hi @chris changing the materials of window by HB subset through HB Const Set is not possible. However i can change them by HB apply window constr only.

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## [Grouping Ladybug HB Apertures for multiple WUFI components in export](https://discourse.ladybug.tools/t/grouping-ladybug-hb-apertures-for-multiple-wufi-components-in-export/40877)

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**Author:** [@sonia.lyakh](https://discourse.ladybug.tools/u/sonia.lyakh)\
**Replies:** 4\
**Last updated:** [October 27, 2026, 9:24pm UTC](https://discourse.ladybug.tools/t/grouping-ladybug-hb-apertures-for-multiple-wufi-components-in-export/40877 "2026-10-27T21:24:40Z")

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I was wondering if anyone has been able to create an export into WUFI where Apertures were grouped together? I want to group together windows of the same type (ie. operable/non-operable windows, number of shared mullion…

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## [HB Dump gbXML crashes Rhino silently — same model translates fine in CPython](https://discourse.ladybug.tools/t/hb-dump-gbxml-crashes-rhino-silently-same-model-translates-fine-in-cpython/40880)

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**Author:** [@mchabasset](https://discourse.ladybug.tools/u/mchabasset)\
**Replies:** 2\
**Last updated:** [October 27, 2026, 6:46pm UTC](https://discourse.ladybug.tools/t/hb-dump-gbxml-crashes-rhino-silently-same-model-translates-fine-in-cpython/40880 "2026-10-27T18:46:00Z")

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Hi @chris, I’m hitting a reproducible hard crash with the HB Dump gbXML component: the moment I switch \_dump from False to True, Rhino closes instantly. No Grasshopper error bubble, no exception, no crash report, no out…

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## [Butterfly Installation problem please help](https://discourse.ladybug.tools/t/butterfly-installation-problem-please-help/40879)

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**Author:** [@Snehal](https://discourse.ladybug.tools/u/Snehal)\
**Replies:** 0\
**Last updated:** [October 27, 2026, 11:57am UTC](https://discourse.ladybug.tools/t/butterfly-installation-problem-please-help/40879 "2026-10-27T11:57:13Z")

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Not able to figure out what happened. please help

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## [Stack ventilation - NPL height calculation bug](https://discourse.ladybug.tools/t/stack-ventilation-npl-height-calculation-bug/40876)

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**Author:** [@jroberts](https://discourse.ladybug.tools/u/jroberts)\
**Replies:** 0\
**Last updated:** [October 26, 2026, 5:35pm UTC](https://discourse.ladybug.tools/t/stack-ventilation-npl-height-calculation-bug/40876 "2026-10-26T17:35:19Z")

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Hi, I’ve been looking at a model with stack ventilation, and I noticed the height difference written into the idf file is exactly the height of my apertures. I checked the opening.py file and can see that’s what the co…

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## [HB PMV Comfort Map 1.10.0 fails at CreateIrradianceContribMap with \_collection\_type / collectiontype error](https://discourse.ladybug.tools/t/hb-pmv-comfort-map-1-10-0-fails-at-createirradiancecontribmap-with-collection-type-collectiontype-error/40520)

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**Author:** [@changf](https://discourse.ladybug.tools/u/changf)\
**Replies:** 7\
**Last updated:** [October 26, 2026, 2:12pm UTC](https://discourse.ladybug.tools/t/hb-pmv-comfort-map-1-10-0-fails-at-createirradiancecontribmap-with-collection-type-collectiontype-error/40520 "2026-10-26T14:12:31Z")

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Hi everyone, I was running HB PMV Comfort Map 1.7.0 without problems but since I updated to version 1.10.0, I got a repeated failure in CreateIrradianceContribMap. The recipe failed with: AttributeError: 'str' object …

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## [Dynamic shade with states for EnergyPlus simulation](https://discourse.ladybug.tools/t/dynamic-shade-with-states-for-energyplus-simulation/23941)

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**Author:** [@ChrsitianDegn](https://discourse.ladybug.tools/u/ChrsitianDegn)\
**Replies:** 6\
**Last updated:** [October 22, 2026, 8:14am UTC](https://discourse.ladybug.tools/t/dynamic-shade-with-states-for-energyplus-simulation/23941 "2026-10-22T08:14:18Z")

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Hello, Is there a way to run an EnergyPlus simulation with dynamic shade groups controlled with states and a schedule similar to how Radiance daylight simulations work now? In practice, I would like to run an EnergyPlu…

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## [Thoughts on solving an interesting wind condition - help wanted](https://discourse.ladybug.tools/t/thoughts-on-solving-an-interesting-wind-condition-help-wanted/40858)

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**Author:** [@remyweather](https://discourse.ladybug.tools/u/remyweather)\
**Replies:** 2\
**Last updated:** [October 22, 2026, 1:45am UTC](https://discourse.ladybug.tools/t/thoughts-on-solving-an-interesting-wind-condition-help-wanted/40858 "2026-10-22T01:45:45Z")

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An unusual post maybe - looking for advice and ideas on how to solve a potentially harmful wind condition in a project of mine. I have run a bunch of CFDs now testing different potential solutions, with not a lot of suc…

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## [Rosetta 2 for ladybug on Mac?](https://discourse.ladybug.tools/t/rosetta-2-for-ladybug-on-mac/40852)

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**Author:** [@Murray1111](https://discourse.ladybug.tools/u/Murray1111)\
**Replies:** 4\
**Last updated:** [October 20, 2026, 7:32pm UTC](https://discourse.ladybug.tools/t/rosetta-2-for-ladybug-on-mac/40852 "2026-10-20T19:32:57Z")

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Hi all, Quick rather simplistic question, is Rosetta 2 required to install ladybug on a Mac? The installer in grasshopper says it is… For context I am using rhino 8 and trying to install LB 1.10.0 Thanks in advance.

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## [Minute-resolution WEA with Annual Daylight Enhanced](https://discourse.ladybug.tools/t/minute-resolution-wea-with-annual-daylight-enhanced/40792)

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**Author:** [@Guille01](https://discourse.ladybug.tools/u/Guille01)\
**Replies:** 2\
**Last updated:** [October 20, 2026, 6:47am UTC](https://discourse.ladybug.tools/t/minute-resolution-wea-with-annual-daylight-enhanced/40792 "2026-10-20T06:47:57Z")

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Hi Chris, I am working on a daylight-model validation using indoor measurements recorded approximately every minute. I came across these previous discussions: https://discourse.ladybug.tools/t/can-we-simulate-the-dayli…

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## [Butterfly not running - docker-machine error](https://discourse.ladybug.tools/t/butterfly-not-running-docker-machine-error/11451)

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**Author:** [@hmurya](https://discourse.ladybug.tools/u/hmurya)\
**Replies:** 2\
**Last updated:** [October 18, 2026, 3:11am UTC](https://discourse.ladybug.tools/t/butterfly-not-running-docker-machine-error/11451 "2026-10-18T03:11:40Z")

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I get this error when I try to toggle write\_ on “blockMesh” Solution exception:‘docker-machine’ is not recognized as an internal or external command, operable program or batch file. I am running blueCFD on windows1…

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## [Internal walls in one zone](https://discourse.ladybug.tools/t/internal-walls-in-one-zone/40818)

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**Author:** [@asezel](https://discourse.ladybug.tools/u/asezel)\
**Replies:** 1\
**Last updated:** [October 16, 2026, 7:53am UTC](https://discourse.ladybug.tools/t/internal-walls-in-one-zone/40818 "2026-10-16T07:53:04Z")

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Hi! Is it possible to have internal walls inside of a zone? (if I want to treat these walls in the same zones) Thanks a lot in advance!

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## [Input \_geo is not a closed volume](https://discourse.ladybug.tools/t/input-geo-is-not-a-closed-volume/13488)

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**Author:** [@Erikbeeren](https://discourse.ladybug.tools/u/Erikbeeren)\
**Replies:** 44\
**Last updated:** [October 16, 2026, 7:45am UTC](https://discourse.ladybug.tools/t/input-geo-is-not-a-closed-volume/13488 "2026-10-16T07:45:39Z")

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Hi @chris, One more issue on the big Hospital project. It could be because of the complex geometry, but on some places the defining of the zones and adjencies is not done correctly with the new LBT tools. Although all …

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## [We are Adding 5 New Daylight Compliance Recipes to Ladybug Tools](https://discourse.ladybug.tools/t/we-are-adding-5-new-daylight-compliance-recipes-to-ladybug-tools/40514)

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**Author:** [@mikkel](https://discourse.ladybug.tools/u/mikkel)\
**Replies:** 16\
**Last updated:** [October 15, 2026, 1:24pm UTC](https://discourse.ladybug.tools/t/we-are-adding-5-new-daylight-compliance-recipes-to-ladybug-tools/40514 "2026-10-15T13:24:19Z")

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Hello Ladybug Tools community, As we announced earlier this year, as part of our goal of further integrating the LBT Grasshopper plugin with the needs of large professional projects, we are starting to expose new recipe…

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## [HB Internal Walls](https://discourse.ladybug.tools/t/hb-internal-walls/40855)

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**Author:** [@asezel](https://discourse.ladybug.tools/u/asezel)\
**Replies:** 0\
**Last updated:** [October 14, 2026, 10:18am UTC](https://discourse.ladybug.tools/t/hb-internal-walls/40855 "2026-10-14T10:18:56Z")

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Hello, In a floor level simulation, is it possible to add internal walls without adding new zones? I want to basically have 1 volume for the floor and add internal walls without creating a zone for every room. I’d very…

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## [Ironbug testing on macOS](https://discourse.ladybug.tools/t/ironbug-testing-on-macos/40812)

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**Author:** [@furtonb](https://discourse.ladybug.tools/u/furtonb)\
**Replies:** 9\
**Last updated:** [October 12, 2026, 10:27pm UTC](https://discourse.ladybug.tools/t/ironbug-testing-on-macos/40812 "2026-10-12T22:27:54Z")

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Hi guys, @MingboPeng 's recent PR just came across on my Github feed (PR #159, released in v1.26.1): It was released last week and I found nothing about it on the forum, so I felt the natural urge to jump in, and as…

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## [No module named honeybee\_radiance.config](https://discourse.ladybug.tools/t/no-module-named-honeybee-radiance-config/40846)

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**Author:** [@dumpling](https://discourse.ladybug.tools/u/dumpling)\
**Replies:** 0\
**Last updated:** [October 11, 2026, 10:40pm UTC](https://discourse.ladybug.tools/t/no-module-named-honeybee-radiance-config/40846 "2026-10-11T22:40:04Z")

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Does anyone know how to find / where I can install honeybee\_radiance.config? Thanks!

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## [Ladybug Installation Mac M5](https://discourse.ladybug.tools/t/ladybug-installation-mac-m5/40845)

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**Author:** [@Murray1111](https://discourse.ladybug.tools/u/Murray1111)\
**Replies:** 0\
**Last updated:** [October 11, 2026, 7:11pm UTC](https://discourse.ladybug.tools/t/ladybug-installation-mac-m5/40845 "2026-10-11T19:11:55Z")

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Hi all, Quick rather simplistic question, is rosetta required to install ladybug on a Mac? The installer in grasshopper says it is… For context I am using rhino 8 and trying to install LB 1.10.0 Thanks in advance.

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## [RadiantVFlow Blocks simulation to OSM](https://discourse.ladybug.tools/t/radiantvflow-blocks-simulation-to-osm/40844)

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**Author:** [@Emesisblue](https://discourse.ladybug.tools/u/Emesisblue)\
**Replies:** 0\
**Last updated:** [October 11, 2026, 9:13am UTC](https://discourse.ladybug.tools/t/radiantvflow-blocks-simulation-to-osm/40844 "2026-10-11T09:13:45Z")

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Good evening, sorry to bother you. I’m trying to run a simulation with RadiantVFlow. I believe I’ve set up the hot and cold water loops correctly and connected the branches, using Internal Source components. The problem …

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## [Ladybug tools fails to load in Rhino InsideRevit](https://discourse.ladybug.tools/t/ladybug-tools-fails-to-load-in-rhino-insiderevit/40839)

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**Author:** [@Asisnath](https://discourse.ladybug.tools/u/Asisnath)\
**Replies:** 3\
**Last updated:** [October 10, 2026, 6:09pm UTC](https://discourse.ladybug.tools/t/ladybug-tools-fails-to-load-in-rhino-insiderevit/40839 "2026-10-10T18:09:56Z")

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Hello all! When I used Revit and open Rhino using RIR and then open Ladybug tools this issue arises. Ladybug tools not loading in RIR. everthing works well when opened Rhino as stand alone. Already tried reinstalling. I …

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## [Supply and exhaust ventilation included in AirflowNetwork balance for multizonal model](https://discourse.ladybug.tools/t/supply-and-exhaust-ventilation-included-in-airflownetwork-balance-for-multizonal-model/40838)

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**Author:** [@stan](https://discourse.ladybug.tools/u/stan)\
**Replies:** 0\
**Last updated:** [October 9, 2026, 2:15pm UTC](https://discourse.ladybug.tools/t/supply-and-exhaust-ventilation-included-in-airflownetwork-balance-for-multizonal-model/40838 "2026-10-09T14:15:22Z")

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Hello, The question is: Is it possible to model a two-zone ventilation that meet the following criteria: Zone A has mechanical outdoor-air supply but no physical return-air duct. Zone B has mechanical exhaust. The zones…

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## [Unexpected longwave MRT results](https://discourse.ladybug.tools/t/unexpected-longwave-mrt-results/40835)

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**Author:** [@jroberts](https://discourse.ladybug.tools/u/jroberts)\
**Replies:** 2\
**Last updated:** [October 8, 2026, 11:02am UTC](https://discourse.ladybug.tools/t/unexpected-longwave-mrt-results/40835 "2026-10-08T11:02:06Z")

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Hi all, I’m using the Honeybee PMVMap component to look at comfort within a space in the Middle East. I have a strip of skylights in the space, and I’d expect a higher longwave MRT under these skylights during summer (a…

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## [Underground Terraced/Stepped Ground Modelling](https://discourse.ladybug.tools/t/underground-terraced-stepped-ground-modelling/40831)

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**Author:** [@dwdwdee2](https://discourse.ladybug.tools/u/dwdwdee2)\
**Replies:** 7\
**Last updated:** [October 6, 2026, 8:54pm UTC](https://discourse.ladybug.tools/t/underground-terraced-stepped-ground-modelling/40831 "2026-10-06T20:54:15Z")

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@chris May I get your advice on how to construct this underground terraced/stepped ground? It seems like this ground is the issue as when I repalce the ground with a flat surface the model is valid.

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## [Ladybug 1.10 is not loading in Rhino 8](https://discourse.ladybug.tools/t/ladybug-1-10-is-not-loading-in-rhino-8/40807)

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**Author:** [@Doris](https://discourse.ladybug.tools/u/Doris)\
**Replies:** 7\
**Last updated:** [October 2, 2026, 10:21pm UTC](https://discourse.ladybug.tools/t/ladybug-1-10-is-not-loading-in-rhino-8/40807 "2026-10-02T22:21:30Z")

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Hi @chris I hope you are going well. I am writing to ask for your help, please. I have installed Ladybug version 1.10 through Pollination for Grasshopper (plugins\_release\_PollinationGHInstaller-1.71.1.exe). However, whe…

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## [How to uninstall Lagybug/Honeybee](https://discourse.ladybug.tools/t/how-to-uninstall-lagybug-honeybee/1642)

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**Author:** [@AntoineMaes](https://discourse.ladybug.tools/u/AntoineMaes)\
**Replies:** 8\
**Last updated:** [October 2, 2026, 6:20pm UTC](https://discourse.ladybug.tools/t/how-to-uninstall-lagybug-honeybee/1642 "2026-10-02T18:20:40Z")

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This might sounds strange. I first installed all the componnents in grasshopper. Nothing would work and i had an error message "base type is missing" (i already have GhPython installed). So i tried to replace all t…

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## ['1. Solution exception:Could not find a part of the path' for daylight simulation](https://discourse.ladybug.tools/t/1-solution-exception-could-not-find-a-part-of-the-path-for-daylight-simulation/18504)

<div class="topic-metadata">

**Author:** [@Nimafo](https://discourse.ladybug.tools/u/Nimafo)\
**Replies:** 7\
**Last updated:** [October 1, 2026, 9:30am UTC](https://discourse.ladybug.tools/t/1-solution-exception-could-not-find-a-part-of-the-path-for-daylight-simulation/18504 "2026-10-01T09:30:04Z")

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Hi all, I get the following error on my daylight simulation. Warning: Roughness values above .2 is uncommon. Warning: Roughness values above .2 is uncommon. Runtime error (DirectoryNotFoundException): Could not find …

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