# \#honeybee

**URL:** https://discourse.ladybug.tools/tag/honeybee/161.md

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

---

## [Outdoor comfort under a tree](https://discourse.ladybug.tools/t/outdoor-comfort-under-a-tree/40909)

<div class="topic-metadata">

**Author:** [@ec](https://discourse.ladybug.tools/u/ec)\
**Replies:** 4\
**Last updated:** [November 7, 2026, 10:21pm UTC](https://discourse.ladybug.tools/t/outdoor-comfort-under-a-tree/40909 "2026-11-07T22:21:22Z")

</div>

Hello, I would like to investigate the changes in thermal stress around buildings with and without trees using the ready-made Grasshopper (.gh) file called “Outdoor Comfort Under a Tree.” However, the areas where trees…

---

## [Rhino 9 for Mac compatibility with Ladybug/Honeybee on Apple M5 Pro](https://discourse.ladybug.tools/t/rhino-9-for-mac-compatibility-with-ladybug-honeybee-on-apple-m5-pro/40899)

<div class="topic-metadata">

**Author:** [@maha](https://discourse.ladybug.tools/u/maha)\
**Replies:** 0\
**Last updated:** [November 3, 2026, 12:24am UTC](https://discourse.ladybug.tools/t/rhino-9-for-mac-compatibility-with-ladybug-honeybee-on-apple-m5-pro/40899 "2026-11-03T00:24:19Z")

</div>

Hello, I am starting a daylight study and have not installed or purchased Rhino yet. My computer is an Apple M5 Pro Mac with 64 GB memory, and macOS Tahoe 26.5.2. Rhino’s download page offers Rhino 9, but the Ladybug …

---

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

<div class="topic-metadata">

**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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

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…

---

## [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)

<div class="topic-metadata">

**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")

</div>

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 …

---

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

<div class="topic-metadata">

**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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

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 …

---

## [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)

<div class="topic-metadata">

**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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

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

---

## [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)

<div class="topic-metadata">

**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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

@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.

---

## ['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")

</div>

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 …

---

## [Heat Pump Water Heaters on multifamily buildings](https://discourse.ladybug.tools/t/heat-pump-water-heaters-on-multifamily-buildings/40824)

<div class="topic-metadata">

**Author:** [@Leite](https://discourse.ladybug.tools/u/Leite)\
**Replies:** 0\
**Last updated:** [September 30, 2026, 5:39pm UTC](https://discourse.ladybug.tools/t/heat-pump-water-heaters-on-multifamily-buildings/40824 "2026-09-30T17:39:40Z")

</div>

Hello everyone, Running on a small problem when connecting the DF\_Room2D component to the DF\_SHW component with a HPWH. Modeling a multifamily building with 15 units, and after connecting the room2d output to the “condi…

---

## [HB Annual Daylight matrices is not working](https://discourse.ladybug.tools/t/hb-annual-daylight-matrices-is-not-working/40816)

<div class="topic-metadata">

**Author:** [@Snehal](https://discourse.ladybug.tools/u/Snehal)\
**Replies:** 2\
**Last updated:** [September 30, 2026, 11:48am UTC](https://discourse.ladybug.tools/t/hb-annual-daylight-matrices-is-not-working/40816 "2026-09-30T11:48:44Z")

</div>

HB Annual Daylight matrices is not working red Bubble is showing this error \[exception: Failed to compute annual daylight metrics.\]

---

## [1. Solution exception:The recipe failed to run with the following summary:](https://discourse.ladybug.tools/t/1-solution-exception-the-recipe-failed-to-run-with-the-following-summary/18905)

<div class="topic-metadata">

**Author:** [@ZHNGLLXXX](https://discourse.ladybug.tools/u/ZHNGLLXXX)\
**Replies:** 18\
**Last updated:** [June 7, 2023, 2:57pm UTC](https://discourse.ladybug.tools/t/1-solution-exception-the-recipe-failed-to-run-with-the-following-summary/18905 "2023-06-07T14:57:23Z")

</div>

Solution exception:The recipe failed to run with the following summary: Scheduled 38 tasks of which: 28 ran successfully: 1 ComputeSphericalViewFactors(…) 1 CopyGridInfo(…) 1 CopyRedistInfo(…) 1 CreateDirectSky(…) 1…

---

## [Fixed Interval Schedule crashes on leap year](https://discourse.ladybug.tools/t/fixed-interval-schedule-crashes-on-leap-year/40798)

<div class="topic-metadata">

**Author:** [@MatteoMerli](https://discourse.ladybug.tools/u/MatteoMerli)\
**Replies:** 5\
**Last updated:** [September 23, 2026, 9:42am UTC](https://discourse.ladybug.tools/t/fixed-interval-schedule-crashes-on-leap-year/40798 "2026-09-23T09:42:11Z")

</div>

Hi @chris I ran into an issue using fixed schedules with leap years. The Fixed Interval Schedule component expects 8760 values (standard year, timestep = 1), but I am running a leap year (2024), and if i supply 8784 va…

---

## [The illuminance calculation of electric light is not correct](https://discourse.ladybug.tools/t/the-illuminance-calculation-of-electric-light-is-not-correct/40799)

<div class="topic-metadata">

**Author:** [@mrbass](https://discourse.ladybug.tools/u/mrbass)\
**Replies:** 2\
**Last updated:** [September 23, 2026, 7:51am UTC](https://discourse.ladybug.tools/t/the-illuminance-calculation-of-electric-light-is-not-correct/40799 "2026-09-23T07:51:44Z")

</div>

i followed the sample of electric light, but the result seems wrong when I check the illuminance in DIAlux. Did anybody know how to fix this?

---

## [HB Visualization--\> Grid Sensor from Room --- \>Recipes: query is If the produced graphs are right or wrong](https://discourse.ladybug.tools/t/hb-visualization-grid-sensor-from-room-recipes-query-is-if-the-produced-graphs-are-right-or-wrong/40797)

<div class="topic-metadata">

**Author:** [@Snehal](https://discourse.ladybug.tools/u/Snehal)\
**Replies:** 0\
**Last updated:** [September 21, 2026, 9:35am UTC](https://discourse.ladybug.tools/t/hb-visualization-grid-sensor-from-room-recipes-query-is-if-the-produced-graphs-are-right-or-wrong/40797 "2026-09-21T09:35:30Z")

</div>

Hi, I want to upload file to ask my query how should I upload my files.

---

## [Bug of DumpVisSet? Or incomplete known issues](https://discourse.ladybug.tools/t/bug-of-dumpvisset-or-incomplete-known-issues/39972)

<div class="topic-metadata">

**Author:** [@ZhengrongTao](https://discourse.ladybug.tools/u/ZhengrongTao)\
**Replies:** 13\
**Last updated:** [September 18, 2026, 4:57pm UTC](https://discourse.ladybug.tools/t/bug-of-dumpvisset-or-incomplete-known-issues/39972 "2026-09-18T16:57:06Z")

</div>

hi,@chris I am attempting to use the DumpVisSet component to export the SVG image. Its application in the flat or three-dimensional images provided by Ladybug has been very successful. However, when I used the Visualiza…

---

## [Ironbug radiant system setup issues](https://discourse.ladybug.tools/t/ironbug-radiant-system-setup-issues/40790)

<div class="topic-metadata">

**Author:** [@Makaella](https://discourse.ladybug.tools/u/Makaella)\
**Replies:** 1\
**Last updated:** [September 17, 2026, 6:06pm UTC](https://discourse.ladybug.tools/t/ironbug-radiant-system-setup-issues/40790 "2026-09-17T18:06:37Z")

</div>

Hello! I have applied the construction for “INTERNAL SOURCE”, and have checked the construction attribute of the surface and ground. then use the rooms for creating an HB Model. But always receive the error message as fo…

---

## [Simulation Running Failed "ComputeSphericalViewFactors](https://discourse.ladybug.tools/t/simulation-running-failed-computesphericalviewfactors/40782)

<div class="topic-metadata">

**Author:** [@concreteblock100](https://discourse.ladybug.tools/u/concreteblock100)\
**Replies:** 1\
**Last updated:** [September 16, 2026, 2:14am UTC](https://discourse.ladybug.tools/t/simulation-running-failed-computesphericalviewfactors/40782 "2026-09-16T02:14:17Z")

</div>

Hello friends. Right now, I’m doing a simulation for operative temperature mapping. Previously (yesterday), the simulation can finish perfectly and showed the OT mapping results. However, just today, without changing any…

---

## [Honeybee\_radiance cannot import luminaire](https://discourse.ladybug.tools/t/honeybee-radiance-cannot-import-luminaire/40780)

<div class="topic-metadata">

**Author:** [@joao.pires.i](https://discourse.ladybug.tools/u/joao.pires.i)\
**Replies:** 0\
**Last updated:** [September 14, 2026, 9:46pm UTC](https://discourse.ladybug.tools/t/honeybee-radiance-cannot-import-luminaire/40780 "2026-09-14T21:46:26Z")

</div>

Hello! I am facing a import problem after update the lbt grasshopper to 1.10.54 using the LB Versioner in GH. When I try to use a HB Luminaire it shows: cannot import luminaire from honeybee\_radiance, others components …

---

## [FAILING simple multi-storey geometry / model sketch - HELP!](https://discourse.ladybug.tools/t/failing-simple-multi-storey-geometry-model-sketch-help/40755)

<div class="topic-metadata">

**Author:** [@MichaelDonn](https://discourse.ladybug.tools/u/MichaelDonn)\
**Replies:** 5\
**Last updated:** [September 6, 2026, 9:51pm UTC](https://discourse.ladybug.tools/t/failing-simple-multi-storey-geometry-model-sketch-help/40755 "2026-09-06T21:51:15Z")

</div>

Hi I am trying to demonstrate how a 12 storey urban building might be sketched with the potential to have different Window-to-wall ratios and different shading on each type of floor. RHINO Layers: Script design …

---

## [Radiator and floor heating combination simulation issue](https://discourse.ladybug.tools/t/radiator-and-floor-heating-combination-simulation-issue/40640)

<div class="topic-metadata">

**Author:** [@Akos](https://discourse.ladybug.tools/u/Akos)\
**Replies:** 3\
**Last updated:** [September 2, 2026, 5:58pm UTC](https://discourse.ladybug.tools/t/radiator-and-floor-heating-combination-simulation-issue/40640 "2026-09-02T17:58:05Z")

</div>

Hi there, i would like to build up a model with BaseboardWaterC (radiator) and (RadiantVFlow) floor heating (only heating). I set up the Loops (also the domestic hotwater). I also added an internal source in the floor f…

---

## [Hb Apertures by Width height](https://discourse.ladybug.tools/t/hb-apertures-by-width-height/40712)

<div class="topic-metadata">

**Author:** [@Nicholaskerr](https://discourse.ladybug.tools/u/Nicholaskerr)\
**Replies:** 4\
**Last updated:** [August 29, 2026, 9:24pm UTC](https://discourse.ladybug.tools/t/hb-apertures-by-width-height/40712 "2026-08-29T21:24:51Z")

</div>

Hi all, I have run into an issue using AperturesByWH. Even though I have set the window width to longer than the wall surface (so as to have one window across the full length of the wall), I am getting little pieces of …

---

## [Dewbee: a plugin for heat and moisture transfer (HAMT) in Grasshopper](https://discourse.ladybug.tools/t/dewbee-a-plugin-for-heat-and-moisture-transfer-hamt-in-grasshopper/40314)

<div class="topic-metadata">

**Author:** [@gzorzeto](https://discourse.ladybug.tools/u/gzorzeto)\
**Replies:** 11\
**Last updated:** [August 27, 2026, 4:08pm UTC](https://discourse.ladybug.tools/t/dewbee-a-plugin-for-heat-and-moisture-transfer-hamt-in-grasshopper/40314 "2026-08-27T16:08:46Z")

</div>

Dear Ladybug Tools Community, Welcome Dewbee, a Honeybee extension to run heat and moisture transfer (HAMT) simulations in Grasshopper! Dewbee basically activates the Combined Heat and Moisture Transfer algorithm in En…

---

## [Free Future Meteorological Years (FMYs) for 5,000+ European locations](https://discourse.ladybug.tools/t/free-future-meteorological-years-fmys-for-5-000-european-locations/40704)

<div class="topic-metadata">

**Author:** [@LittleBuddha](https://discourse.ladybug.tools/u/LittleBuddha)\
**Replies:** 0\
**Last updated:** [August 20, 2026, 10:52am UTC](https://discourse.ladybug.tools/t/free-future-meteorological-years-fmys-for-5-000-european-locations/40704 "2026-08-20T10:52:10Z")

</div>

Following on from our TMY release, we’re excited to announce that Future Meteorological Years (FMYs) are now available on ClimateDataForBuildings.eu — giving practitioners a free, simulation-ready way to design for the c…

---

## [UDI\_lower returns 0% for sensors with 0 lux all year (expected 100%)](https://discourse.ladybug.tools/t/udi-lower-returns-0-for-sensors-with-0-lux-all-year-expected-100/40659)

<div class="topic-metadata">

**Author:** [@vall](https://discourse.ladybug.tools/u/vall)\
**Replies:** 1\
**Last updated:** [August 13, 2026, 11:52am UTC](https://discourse.ladybug.tools/t/udi-lower-returns-0-for-sensors-with-0-lux-all-year-expected-100/40659 "2026-08-13T11:52:51Z")

</div>

Hi everyone, I’m using Honeybee LBT 1.10.0 and noticed something that I can’t explain in the Annual Daylight results. Some rooms in my model (toilets and a dressing room) receive no daylight at all. Every sensor in tho…

---

## [PMV Map Access Denied](https://discourse.ladybug.tools/t/pmv-map-access-denied/40677)

<div class="topic-metadata">

**Author:** [@Elliot\_Glassman](https://discourse.ladybug.tools/u/Elliot_Glassman)\
**Replies:** 0\
**Last updated:** [August 12, 2026, 11:23pm UTC](https://discourse.ladybug.tools/t/pmv-map-access-denied/40677 "2026-08-12T23:23:02Z")

</div>

Having trouble with the PMV Map and the Adaptive Map. When I try running on my work computer I get the following error: Solution exception: The recipe failed to run with the following error(s): 2026-08-11 23:45:44 E…

[Next page](https://discourse.ladybug.tools/tag/honeybee/161.md?match_all_tags=true&page=1&tags%5B%5D=honeybee)