# \#glare

**URL:** https://discourse.ladybug.tools/tag/glare/18.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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## [Spatial Glare Autonomy (sGA) Calculation](https://discourse.ladybug.tools/t/spatial-glare-autonomy-sga-calculation/40672)

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**Author:** [@MahsanM](https://discourse.ladybug.tools/u/MahsanM)\
**Replies:** 1\
**Last updated:** [August 14, 2026, 10:43pm UTC](https://discourse.ladybug.tools/t/spatial-glare-autonomy-sga-calculation/40672 "2026-08-14T22:43:51Z")

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I was wondering if the posted screen captures are the correct method to calculate sGA? The default threshold is 0.4 glare and the hours include daylong, which should be fine for 95% of the time. Thanks

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## [Outdoor glare from facade glazing](https://discourse.ladybug.tools/t/outdoor-glare-from-facade-glazing/39940)

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**Author:** [@Julioamodia89](https://discourse.ladybug.tools/u/Julioamodia89)\
**Replies:** 2\
**Last updated:** [February 5, 2026, 3:43pm UTC](https://discourse.ladybug.tools/t/outdoor-glare-from-facade-glazing/39940 "2026-02-05T15:43:22Z")

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Hi @Hamzajh19, @MingboPeng , @LittleBuddha, @sarith, @LiamRuvio, @Grasshope First of all, sorry to bother you, but I’m hoping someone can shed some light on this. I’m evaluating glare risk from a glazed façade. In my s…

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## [Failed to run HB Imageless Annual Glare: dcglare issue](https://discourse.ladybug.tools/t/failed-to-run-hb-imageless-annual-glare-dcglare-issue/39298)

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**Author:** [@KoBa20](https://discourse.ladybug.tools/u/KoBa20)\
**Replies:** 1\
**Last updated:** [October 8, 2025, 11:31am UTC](https://discourse.ladybug.tools/t/failed-to-run-hb-imageless-annual-glare-dcglare-issue/39298 "2025-10-08T11:31:54Z")

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Dear Ladybug-Tools-Community, while trying to run a HB Imageless Annual Glare simulation (LB version 1.9.0 installed via Pollination), I stumbled upon the following error: 2025-10-08 11:10:20 INFO: — Logging error — 2…

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## [Issue Running Single-Hour Glare Analysis in Honeybee](https://discourse.ladybug.tools/t/issue-running-single-hour-glare-analysis-in-honeybee/39196)

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**Author:** [@Rahaf03](https://discourse.ladybug.tools/u/Rahaf03)\
**Replies:** 10\
**Last updated:** [September 25, 2025, 4:03pm UTC](https://discourse.ladybug.tools/t/issue-running-single-hour-glare-analysis-in-honeybee/39196 "2025-09-25T16:03:26Z")

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Hello, I am currently working on glare analysis using Honeybee, and I am facing difficulties when trying to run a single-hour glare simulation. My goal is to obtain Daylight Glare Probability (DGP) values for one spec…

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## [Ladybug glare analysis by material is not working](https://discourse.ladybug.tools/t/ladybug-glare-analysis-by-material-is-not-working/36360)

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**Author:** [@Lauhurtado](https://discourse.ladybug.tools/u/Lauhurtado)\
**Replies:** 0\
**Last updated:** [April 7, 2025, 10:29pm UTC](https://discourse.ladybug.tools/t/ladybug-glare-analysis-by-material-is-not-working/36360 "2025-04-07T22:29:07Z")

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Hi everyone! I’m working on a glare analysis using Honeybee for a glazed pedestrian bridge in Oslo. The bridge has transparent walls and a translucent glass floor, while the roof is opaque. I’ve created different HB G…

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## [DGP is too low in high luminanace condition](https://discourse.ladybug.tools/t/dgp-is-too-low-in-high-luminanace-condition/36240)

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**Author:** [@seojeonghwan](https://discourse.ladybug.tools/u/seojeonghwan)\
**Replies:** 3\
**Last updated:** [March 25, 2025, 12:38am UTC](https://discourse.ladybug.tools/t/dgp-is-too-low-in-high-luminanace-condition/36240 "2025-03-25T00:38:58Z")

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I thought that if a high-luminance light source like this is within the field of view, the DGP would be quite high, but it’s almost close to zero. Why do you think that is? when view direction is facing the su…

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## [How to Input Values for Honeybee Modifier – Reflective Glare Analysis](https://discourse.ladybug.tools/t/how-to-input-values-for-honeybee-modifier-reflective-glare-analysis/36160)

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**Author:** [@seojeonghwan](https://discourse.ladybug.tools/u/seojeonghwan)\
**Replies:** 0\
**Last updated:** [March 14, 2025, 7:06am UTC](https://discourse.ladybug.tools/t/how-to-input-values-for-honeybee-modifier-reflective-glare-analysis/36160 "2025-03-14T07:06:27Z")

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I am conducting a simulation to analyze the impact of reflectance properties of a single geometry on glare in an adjacent unit room. For this simulation, I intend to adjust reflectance, specularity, and roughness while d…

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## [Dynamic Blinds and finding total hours shades are down](https://discourse.ladybug.tools/t/dynamic-blinds-and-finding-total-hours-shades-are-down/33700)

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**Author:** [@Lupamudra](https://discourse.ladybug.tools/u/Lupamudra)\
**Replies:** 0\
**Last updated:** [August 1, 2024, 10:59am UTC](https://discourse.ladybug.tools/t/dynamic-blinds-and-finding-total-hours-shades-are-down/33700 "2024-08-01T10:59:09Z")

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Hello, I am trying to simulate daylight analysis for a primary school. I want to automate the blinds on the windows to reduce glare. My end goal is to find the percentage of occupied time the blinds are up. I want to m…

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## [HB Annual Glare Metrics Error](https://discourse.ladybug.tools/t/hb-annual-glare-metrics-error/30377)

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**Author:** [@thorwinkler](https://discourse.ladybug.tools/u/thorwinkler)\
**Replies:** 2\
**Last updated:** [July 25, 2024, 10:38am UTC](https://discourse.ladybug.tools/t/hb-annual-glare-metrics-error/30377 "2024-07-25T10:38:44Z")

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Hi there, I have been attempting to use HB Annual Glare Metrics to give me a pass\_fail on the Imageless Annual Glare tool. It keeps giving me a runtime error with finding the file path (even when I go back and use one o…

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## [Position in HB View](https://discourse.ladybug.tools/t/position-in-hb-view/25127)

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**Author:** [@Negin](https://discourse.ladybug.tools/u/Negin)\
**Replies:** 1\
**Last updated:** [June 9, 2024, 4:45am UTC](https://discourse.ladybug.tools/t/position-in-hb-view/25127 "2024-06-09T04:45:46Z")

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Hello everyone, can anyone help me what is the position input in HB View component for glare analysis?

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## [PV panel material import in HB rad library](https://discourse.ladybug.tools/t/pv-panel-material-import-in-hb-rad-library/23999)

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**Author:** [@Julioamodia89](https://discourse.ladybug.tools/u/Julioamodia89)\
**Replies:** 1\
**Last updated:** [February 13, 2024, 12:38pm UTC](https://discourse.ladybug.tools/t/pv-panel-material-import-in-hb-rad-library/23999 "2024-02-13T12:38:52Z")

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Dear all, I am trying to import this material into HB Radiance. I am having a hard time figuring out what is the correct way to do it, or if it is possible. Could anybody please give me a hint about how to proceed? Th…

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## [Internal blinds schedule based on DGP from Imageless Glare study](https://discourse.ladybug.tools/t/internal-blinds-schedule-based-on-dgp-from-imageless-glare-study/23701)

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**Author:** [@MarkLabrosse](https://discourse.ladybug.tools/u/MarkLabrosse)\
**Replies:** 0\
**Last updated:** [January 9, 2024, 4:11pm UTC](https://discourse.ladybug.tools/t/internal-blinds-schedule-based-on-dgp-from-imageless-glare-study/23701 "2024-01-09T16:11:50Z")

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Hi guys At all the offices I’ve worked at, our only recommendation for glare have been “make sure to buy manual internal blinds/venetians, so that the occupants can shield themselves from glare”. But what does that mean…

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## [Legend missing in HB Glare Simulation](https://discourse.ladybug.tools/t/legend-missing-in-hb-glare-simulation/22849)

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**Author:** [@john\_mallic](https://discourse.ladybug.tools/u/john_mallic)\
**Replies:** 1\
**Last updated:** [October 16, 2023, 8:23pm UTC](https://discourse.ladybug.tools/t/legend-missing-in-hb-glare-simulation/22849 "2023-10-16T20:23:14Z")

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Greetings, I am performing glare simulation using Radiance 5.4 with Ladybug 1.5.0 in Grasshopper. I am doing an Image-based Simulation and chose Daylight Glare Probability (DGP) metric as the glare analysis metric. Af…

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## [Annual Glare and occupancy time](https://discourse.ladybug.tools/t/annual-glare-and-occupancy-time/10408)

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**Author:** [@gulcun](https://discourse.ladybug.tools/u/gulcun)\
**Replies:** 1\
**Last updated:** [September 21, 2023, 6:28am UTC](https://discourse.ladybug.tools/t/annual-glare-and-occupancy-time/10408 "2023-09-21T06:28:25Z")

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Hello dear community, I have started a model to obtain annual values of DGP. I can get dgp output for all hours of a year. But can we get data according to the annual occupancy time as in SDA? I just want to see the ann…

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## [Annual glare studies according to EN17037](https://discourse.ladybug.tools/t/annual-glare-studies-according-to-en17037/19120)

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**Author:** [@MarkLabrosse](https://discourse.ladybug.tools/u/MarkLabrosse)\
**Replies:** 5\
**Last updated:** [July 27, 2023, 1:20pm UTC](https://discourse.ladybug.tools/t/annual-glare-studies-according-to-en17037/19120 "2023-07-27T13:20:08Z")

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Hi guys I would like to use LBT to document glare according to the danish certification scheme dk-DGNB version 2020, which uses the method described in EN17037. The criteria in DGNB are as follows: Now the question …

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## [Troubleshooting HB Imageless Annual Glare](https://discourse.ladybug.tools/t/troubleshooting-hb-imageless-annual-glare/22102)

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**Author:** [@JimMarsh](https://discourse.ladybug.tools/u/JimMarsh)\
**Replies:** 9\
**Last updated:** [June 30, 2023, 8:20pm UTC](https://discourse.ladybug.tools/t/troubleshooting-hb-imageless-annual-glare/22102 "2023-06-30T20:20:36Z")

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I was not trusting the results I’m getting in my Imageless Glare study, so I decided to model a floor up in the air and make the occupancy schedule only during low sun hours. I’m still getting 100% of test points and dir…

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## [Glare for External Environment](https://discourse.ladybug.tools/t/glare-for-external-environment/765)

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**Author:** [@SaurabhShrestha](https://discourse.ladybug.tools/u/SaurabhShrestha)\
**Replies:** 10\
**Last updated:** [April 12, 2023, 8:57am UTC](https://discourse.ladybug.tools/t/glare-for-external-environment/765 "2023-04-12T08:57:19Z")

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Hi everyone, I have a question regarding metrics to measure glare potential, but for an external environment. I was looking at the Honeybee example file for Glare Analysis and also this page here: http://web.mit.edu/t…

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## [Luminance out from the imageless annual glare component](https://discourse.ladybug.tools/t/luminance-out-from-the-imageless-annual-glare-component/21017)

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**Author:** [@LaFleur](https://discourse.ladybug.tools/u/LaFleur)\
**Replies:** 0\
**Last updated:** [February 27, 2023, 3:53pm UTC](https://discourse.ladybug.tools/t/luminance-out-from-the-imageless-annual-glare-component/21017 "2023-02-27T15:53:11Z")

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Dear @mikkel, sorry if I bother you. I wanted to ask you, if is possible to somehow extrapolate the candela value too, out from the Annual Imageless Glare comp. I’d like to map for an outdoor space, (based on the dire…

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## [Glare analysis of outdoor glass curtain wall](https://discourse.ladybug.tools/t/glare-analysis-of-outdoor-glass-curtain-wall/20959)

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**Author:** [@baode2022](https://discourse.ladybug.tools/u/baode2022)\
**Replies:** 0\
**Last updated:** [February 21, 2023, 2:27am UTC](https://discourse.ladybug.tools/t/glare-analysis-of-outdoor-glass-curtain-wall/20959 "2023-02-21T02:27:26Z")

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Hi，can you provide an example of glare analysis of outdoor glass curtain wall?

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## [1. Solution exception:Number of colors (256) does not match the number of mesh faces (160) nor the number of vertices (180)](https://discourse.ladybug.tools/t/1-solution-exception-number-of-colors-256-does-not-match-the-number-of-mesh-faces-160-nor-the-number-of-vertices-180/18920)

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**Author:** [@zahrashirzadnia](https://discourse.ladybug.tools/u/zahrashirzadnia)\
**Replies:** 4\
**Last updated:** [July 13, 2022, 12:21pm UTC](https://discourse.ladybug.tools/t/1-solution-exception-number-of-colors-256-does-not-match-the-number-of-mesh-faces-160-nor-the-number-of-vertices-180/18920 "2022-07-13T12:21:37Z")

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Hi guys, It 's so appreciated to release new version and specially the most potential radiance features such as Imageless Annual Glare Recipe. I tried its sample with HB radial sensor grid instead of HB radial grid fro…

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## [What's exactly definition of Glare Autonomy?](https://discourse.ladybug.tools/t/whats-exactly-definition-of-glare-autonomy/18886)

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**Author:** [@zahrashirzadnia](https://discourse.ladybug.tools/u/zahrashirzadnia)\
**Replies:** 1\
**Last updated:** [July 6, 2022, 6:48pm UTC](https://discourse.ladybug.tools/t/whats-exactly-definition-of-glare-autonomy/18886 "2022-07-06T18:48:19Z")

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@chris @mostapha @Aliarch and other professional users! It could be great if It is possible to refer an article . thanks for your answer zahra

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## [How can I get a jpeg image export from LB image viewer?](https://discourse.ladybug.tools/t/how-can-i-get-a-jpeg-image-export-from-lb-image-viewer/18562)

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**Author:** [@zahrashirzadnia](https://discourse.ladybug.tools/u/zahrashirzadnia)\
**Replies:** 1\
**Last updated:** [June 6, 2022, 1:43pm UTC](https://discourse.ladybug.tools/t/how-can-i-get-a-jpeg-image-export-from-lb-image-viewer/18562 "2022-06-06T13:43:55Z")

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@Aliarch

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## [Problem in running annual glare analysis](https://discourse.ladybug.tools/t/problem-in-running-annual-glare-analysis/6552)

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**Author:** [@farhang.tahmasebi](https://discourse.ladybug.tools/u/farhang.tahmasebi)\
**Replies:** 2\
**Last updated:** [June 22, 2019, 9:16pm UTC](https://discourse.ladybug.tools/t/problem-in-running-annual-glare-analysis/6552 "2019-06-22T21:16:01Z")

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Hi everybody, One of my students has started a model to obtain annual values of DGP. But it seems that something is wrong in our modelling approach, as the annual simulation does not generate any DGP files. We really…

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## [Quality of glare analysis image](https://discourse.ladybug.tools/t/quality-of-glare-analysis-image/2557)

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**Author:** [@Tim509](https://discourse.ladybug.tools/u/Tim509)\
**Replies:** 22\
**Last updated:** [April 20, 2022, 3:40am UTC](https://discourse.ladybug.tools/t/quality-of-glare-analysis-image/2557 "2022-04-20T03:40:50Z")

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Hi I did glare analysis but i think the quality of the image has some problems…why the image is divided to some parts? how can i make it better?! \[2018-02-10\_21-52-59\]

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## [DGP analysis generating low results for work surface with direct sunlight](https://discourse.ladybug.tools/t/dgp-analysis-generating-low-results-for-work-surface-with-direct-sunlight/17751)

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**Author:** [@charkitect](https://discourse.ladybug.tools/u/charkitect)\
**Replies:** 1\
**Last updated:** [March 31, 2022, 9:35pm UTC](https://discourse.ladybug.tools/t/dgp-analysis-generating-low-results-for-work-surface-with-direct-sunlight/17751 "2022-03-31T21:35:53Z")

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Hello All! I am running glare analysis and assessing work stations. Most things look reasonable with sun and sky in periphery throughout the year, etc. However, when the sun hits directly hits the work surface, it stat…

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## [How to add luminance values in false color image for glare](https://discourse.ladybug.tools/t/how-to-add-luminance-values-in-false-color-image-for-glare/9982)

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**Author:** [@akash.changlani](https://discourse.ladybug.tools/u/akash.changlani)\
**Replies:** 6\
**Last updated:** [March 11, 2022, 2:01am UTC](https://discourse.ladybug.tools/t/how-to-add-luminance-values-in-false-color-image-for-glare/9982 "2022-03-11T02:01:51Z")

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Hello, I want to know how I can add luminance values (as shown in the figure below) on a false colour image produced from glare analysis. My Gh file: Glare Ana\_Falsecolour.gh (782.6 KB) Thank you.

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## [Iteratively saving every glareCheckImage hdr file for multiple runs](https://discourse.ladybug.tools/t/iteratively-saving-every-glarecheckimage-hdr-file-for-multiple-runs/16667)

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**Author:** [@Harsh](https://discourse.ladybug.tools/u/Harsh)\
**Replies:** 7\
**Last updated:** [November 25, 2021, 11:45am UTC](https://discourse.ladybug.tools/t/iteratively-saving-every-glarecheckimage-hdr-file-for-multiple-runs/16667 "2021-11-25T11:45:45Z")

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Hello Everyone, I’m running a sort of optimization for glare using Honeybee\_Glare Analysis. I used Colibri/ Design Explorer to iterate over parameters and record all DGP results. I would like to save every hdr image ge…

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## [Annual glare in imageless](https://discourse.ladybug.tools/t/annual-glare-in-imageless/15557)

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**Author:** [@hiwa](https://discourse.ladybug.tools/u/hiwa)\
**Replies:** 1\
**Last updated:** [August 20, 2021, 5:19pm UTC](https://discourse.ladybug.tools/t/annual-glare-in-imageless/15557 "2021-08-20T17:19:04Z")

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hello i have error about use imageless glare . Your comments can help me a lot

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## [Hourly DGP for a zone](https://discourse.ladybug.tools/t/hourly-dgp-for-a-zone/15527)

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**Author:** [@hiwa](https://discourse.ladybug.tools/u/hiwa)\
**Replies:** 1\
**Last updated:** [August 16, 2021, 10:57pm UTC](https://discourse.ladybug.tools/t/hourly-dgp-for-a-zone/15527 "2021-08-16T22:57:24Z")

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hello I need to have DGP and DGI hourly results for a month (24\*30) for a zone Please tell me the fastest way to get these results . honeybee plus honeybee legacy ladybug tools

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## [Annual Glare Analysis - DGP profiles](https://discourse.ladybug.tools/t/annual-glare-analysis-dgp-profiles/15317)

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**Author:** [@sameergujar](https://discourse.ladybug.tools/u/sameergujar)\
**Replies:** 0\
**Last updated:** [July 25, 2021, 4:27am UTC](https://discourse.ladybug.tools/t/annual-glare-analysis-dgp-profiles/15317 "2021-07-25T04:27:21Z")

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Hello, I did the Annual glare analysis by using the Annual Daylight analysis recipe for a particular view. By using Honeybee\_Lookup Daylighting Folder I did get the data for the Annual DGP. However, I was trying to ge…

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