Sunhour analysis with latest Ladybug Tools 1.1.0 inside Grasshopper and Rhino 3d | Tutorial 12

[@LeasCraftStudio]

This was super helpful. Thank you! I thought it was great that you offered some potential trouble-shooting tips along the way. I was having an issue with my simple model. The shadows seemed to be all over the place, and I realized it was an issue of scale. I changed my model from mm to meters and it was fixed!

[@PhilippGalvanDesign]

Perfect, thanks for the great feedback!

[@Flavio_R]

Finally the new ladybug tools have been taken in account, thanks for sharing the great contents!

[@PhilippGalvanDesign]

Thanks

[@ashleycummins7188]

Respectfully, please re-record this video. The information you teach is very valuable but was completely downgraded by all the "ummmmsss" "awwwwws" and pauses

[@PhilippGalvanDesign]

Thanks for your honest opinion. We are all learning and comments like yours really help me to identify flaws which are not visible to myself. I might not rerecord this exact video but I was planning of doing an update to the entire ladybug component. This video is a bit outdated. Thanks for watching.

[@chrisbassett9744]

hi, I get the initial problem of 0 hours then when I flip the surface it is still all blue and shows 2000 hours but still just blue, as I want to show the surface of a building with windows to show light that enters

[@PhilippGalvanDesign]

Have you added the building as shade (context). It seems that your calculation doesn't pick up any shade. Meaning that every cell gets the same amount of light. 2000 hours... So there is no range. If every cell gets 2000 hours then every cell has the same colour. (Blue)

[@devikaarun5207]

thing is i followed same procedure but my structure is highrise structure with detail wall and multiple floors which i combined and made a bloock and group of that so when i select in brep its not getting selected as well there is error ? i am not able to send you picture of that on youtube chats will you please help me on that ? please send me mail id so i can send you the actual doubts and question regarding shadow as well wind analysis ????

[@PhilippGalvanDesign]

[e-mail]

[@KornelLewicki]

Could you upload your script online so we don't have to rebuild it ?

[@PhilippGalvanDesign]

Hi Kornel, I did share scripts in the past but I learned that it's pointless because i still get the same questions in the end. In other words, the only way for you to learn how everything works is by doing it yourself. However I'm always happy to help if you are stuck in the process.

[@elt92]

I'd love to see more tutorial from you. You're calm, systemic, you explain bugs and your process; I'd rate you higher than LB's own training tutorials.

[@PhilippGalvanDesign]

Thank you so much. I'll try my best.

[@mohammadghalayini7340]

Hello, that was a very helpful tutorial to work with ladybug. But im facing a problem that it shows me only blue analysis that is 0.00 hrs. Any help Please!

[@PhilippGalvanDesign]

Normally this happens when your test surface is not facing the sun. For example if the ground plane faces downwards than the surface has nothing to record (basically as if shadow all the time). Select your test surface or surfaces and use the flip command to check and change its(their) orientation.

[@julienbitar5220]

Another question for you would be, should I place the geometry in the center of the solar grid? and how can I make the solar north coherent with my geometry's north? Do we have to that manually? Thank again!

[@PhilippGalvanDesign]

Hi Julien, Regarding orientation, i normally try to have my models placed with the correct north orientation into my rhino file. If this is not the case it's not a problem at all. The sunpath component has a slot right on the top called 'north' where you can either input an angle as a number (0-360) or a line which represents the real north in your model. Regarding position, i try to have my model somewhere near the origin, but the sunpath comp. also has a slot called 'center_pt' where you can input a point which you can place anywhere in your model. further you can scale the the sunpath too with 'scale' providing a number to multiply the current scale. hope it's more clear, otherwise i think i explained the concept in one of my previous videos.

[@maxnossin612]

Hi, Thanks for the in depth video! After following all the steps however, I don't get any result. The analysis surface remains fully blue, with 0 hours of sun during the year. The results output of the DirecSunHours object only shows zero's, what might I have done wrong?

[@PhilippGalvanDesign]

You might want to check if your surface has the correct orientation. (Flip surface).

[@asmaalmohannadi8008]

Hi Philip, I tried to copy the URL link of the EPW map and connect it to the LB Download weather but the link I get from the EPW maps website is a ZIP file containing the EPW file. I tried connecting the Downloaded EPW file to a file path and link it to the folder input in LB download weather but it turns red and the note says " Input Parameter_weather_URL Failed to collect data

[@PhilippGalvanDesign]

@Asma Almohannadi - Thanks for pointing this out. I had a go and found that some EPW files have broken or outdated links. Actually quite a lot it turns out. I made a video afterwards which goes through the setup and should hopefully answer your question. Upcoming tomorrow.

[@yiyizi2311]

@@PhilippGalvanDesign Hi Philip, I got the same issue, could you please share the link of sloving this problem? I could find it. Thank you so much.

[@PhilippGalvanDesign]

@@yiyizi2311 - please find it here: kzbin.info/www/bejne/gYq9fZ2GqcStfrc there is an alternative Site for weather data in case the one you selected: "climate.onebuilding.org/"

[@nicholaschau6770]

I'm currently applying the same script onto my own model, but somehow the surface flickers when its in perspective view, and on top view, the building somehow turns all blue. Is it some settings i have to adjust? Thanks in advance

[@PhilippGalvanDesign]

Hi Nicholas, some things to check. Flickering: The script creates a new mesh surface. If the offset off the new mesh (settings on the sun hour tool) is very small then the new mesh and the original surface will 'overlap' and rhino will have troubles and this can cause flickering. I sometimes hide my original model in rhino. If the test surface or surfaces turn blue then it's either that your surfaces are facing downwards. Use the flip command to flip them correctly. Or the test time you have chosen has no sunlight like 3 AM in the morning or 11pm in the evening. It can also be that your test period has no sunlight coming from the top. Another good practice is to keep you model is near the origin of the drawing. If a model is very far from the origin it can also cause problems Hope that helps. Let me know. Cheers Philipp

[@sarasantana7271]

Hi! Thanks for the tutorial, it’s simply wonderful. I was wondering if you could help me with a problem, LB sunpath turns red when I connect the location, it says “Runtime error (ValueErrorException): moy must be positive and smaller than525600. Invalid input 525600.)” I’m sorry, first time using Ladybug .-.

[@PhilippGalvanDesign]

Hi Sara, in order to help you, quick question, did you built the script or are you using my script which you can download for free?

[@chanitnanthphadungnanonth1615]

Thank for the Video. I have one question. I create a building model(facade) in grasshopper (there are so many small diamond panel wrapping around my building) and at some point, it makes all of them so slow. Do I need to bake my model first in to Rhino or is it actually fine if I just do it in the same grasshopper file. The Brep part I just connected all my (loft)model in one Brep and connect to the geometry. It is my Uni project and I am just a starter so I don't know what I suppose to do

[@PhilippGalvanDesign]

I think, first you need to consider what you want to visualize or test with this study on your model. This study is not supposed to be used on a final model but on initial massing model which can lead to an intervention or facade design.

[@jincho4159]

Thanks for a nice tutorial, it was super helpful! Would you mind let me know how the slider name automatically update when you connect to LB analysis period XD?

[@PhilippGalvanDesign]

In the dropdown menu 'Display' you need to untick 'draw full names'. that's it.

[@1insp3ru16]

thankyou a lot.

[@PhilippGalvanDesign]

You are very welcome.

[@배지은-f1n]

SUPER thanks! helps a lot! I know the comfort analysis does include wind effect, but is there any wind analysis specifically? For example, how the wind direction is affected by building , where is strong wind or windturbine ,, it will be really helpful!

[@PhilippGalvanDesign]

You might want to look into 'Rhino CFD' (rhino plugin - commercial) or 'Butterfly' which is a tool by same developer as Ladybug tools. But it requires 'open foam'. I'm exploring it myself at them moment but not yet ready for a tutorial. Hope that helps for now. Thanks for the Question. Cheers

[@julienbitar5220]

Thanks a lot, this was something I am was looking for a while now :) Here is my question: In the Sun path component we have to hoys (Hours of the year probably) and this means that the script will generate the sun exposure heat map at this specific hour of the year. Yet when we introduce the Analysis period (from a certain date to a certain date) this creates a period (hours, days, or months). Therefore my question how can we can the sun path of a period, let say 8 hours in one image? Thanks, Cheers !

[@PhilippGalvanDesign]

Hi Julien, Short anser: watch my video from 20:20 which should answer your question. (calculating a half year period) Long answer: The analyse period component has 3 outputs, in this case, I'm using the HOYS (hours of the year) output which gives me a list of all hours in the period. For example, if your period is 9 hours long, it gives you a list with 9 numbers representing the specific hours. Connect the HOYS from the analyse period component with the sun path HOYS input it creates a vector for each of the 9 hours. The sun hour analysis tool takes all vectors and sums the results for each area. in this case then some areas would have 9 hours of sun and others only 8 to 0 hours. This range is then represented as the colors on your test surface. hope it's more clear. Best Philipp

[@aiaclko9146]

Amazing.Can you make a tutorial for daylight analysis....

[@PhilippGalvanDesign]

I did one, what exactly are you looking for? Daylight factor, daylight analysis for indoors, radiation analysis? Let me know.

[@Ward-cj1jf]

Hello ,the video was great! it helped me a lot in the current project am working on (rotating solar building) but I would like to ask some questions. Am relatively new to grasshopper and am trying to add the azimuth and altitude so I would like to know other than using panels to find numerical results is there a way to have a diagram near the building as you did in the video about the sun hours. Also is it possible in grasshopper to have a simple cube rotate and at the same time have the sun path calculate its context_(can block sunlight to the test_geometry)?

[@PhilippGalvanDesign]

I think it's all possible but as newbie might be a bit hard tinker through. I would first learn the basics of grasshopper then the rest will fall into place automatically.

[@Ward-cj1jf]

@@PhilippGalvanDesign thanks!

[@davidh.1977]

Hi, kann das ganze auch irgendwie von Sonnenstunden in kw/h umgerechnet werden? .. oder braucht es dazu eine andere simulation (zb. Honeybee)?

[@PhilippGalvanDesign]

Hallo David, für kWh müsstest du die Strahlungs Komponente verwenden. So wie in diesem Video: kzbin.info/www/bejne/inanY4OcaNWGaq8 Allerdings ist das in dem Video noch mit den legacy Tools, aber das ginge auch so ähnlich mit den Ladybug Tools 1.1.0 Ich kann mal ein Video dazu machen. Gruss Philipp

[@karaverbeek8749]

Hi Phillipp, thanks for this! I've followed your directions but my DirectSunHours is red and says "Solution exception:Attempted to divide by zero". Any suggestions for this? Thanks!

[@PhilippGalvanDesign]

@Kara Verbeek - hmm... not sure about this. The only way to find out...I saved my script here: 1drv.ms/u/s!AroqbdH7xD3LjflKj-Ll5g4TESOS9w?e=WrTol4 Please download and try. I tested it and it should work without issue. If it doesn't work with your system then you might need to reinstall ladybug tools or update via the update tool on the right-hand side and then rebuild the script. If you need to reinstall I recommend following the steps exactly as described. Would be interesting what the issue is. Let me know how it goes. Also, don't hesitate and let me know if you have troubles with the download. Good luck. Philipp

[@karaverbeek8749]

@@PhilippGalvanDesign It worked! Thank you SO much! Now to go back through my script and see where I went wrong..

[@miafeldman7607]

@@PhilippGalvanDesign Omg, thank you for posting this!!!

[@tyndalleffect7]

I want to detail sunlight hours with different window shades created in Honeybee. Is there a way to turn the honeybee objects created back into geometry, to input for direct solar hours analysis? Like from goo to geometry?

[@PhilippGalvanDesign]

Good question. Any of the visualisation tools in honeybee turns the honeybee objects back to geometry (Meshes) in order to be displayed in rhino. but I haven't explored it myself for that sort of reason. Will do.

[@tyndalleffect7]

@@PhilippGalvanDesign sure! I tried them, but when I input into geometry they cannot turn 'goo into geometry '.

[@PhilippGalvanDesign]

@@tyndalleffect7 I'll have a look. I'm on holiday currently. Back, end of next week.

[@tyndalleffect7]

@@PhilippGalvanDesign enjoy your holidays! No worries

[@para2konrad]

Thanks for this amazing tutorial. At first I couldn't get the analysed grid to be shown in Rhino. The solution was to correctly connect CONTEXT (my model) and GEOMETRY (surface on which the model is built). Also, I forgot to push the toogle ON :)

[@PhilippGalvanDesign]

@Konrad Glura - Excellent, glad it worked out. Btw the geometry can be both context and test surface at the same time. For example if you want to test the the building as well it can placed into the context slot and test surface... hope it makes sense.

[@para2konrad]

@@PhilippGalvanDesign I think that I have already tried that by connecting the building to both the context and geometry. However there weren't any results in the viewport. I will try that again and let you know how this is going out.

[@schajuli1991]

Can you provide the Sample model? :)

[@PhilippGalvanDesign]

Ha ha, well I could provide the sample model but then on the other hand, it is such a simple model.... There are no hidden tricks, no magic really....

[@schajuli1991]

@@PhilippGalvanDesign True, just saw it on the go yesterday and thought it's a nice sample model useful for some quick demos for my colleagues but I just don't have the time at the moment to re-model it myself and so just saved it for later where it will also surely disappear soon in the nirvana of my bookmarks .... so the lazy part of my brain was immediately taking control of my actions and sent this message beforehand ;-)

[@PhilippGalvanDesign]

@schajuli - saved rhino6 version of the 3d file here: 1drv.ms/u/s!AroqbdH7xD3LjfM5knnmyLcEo5zmsQ?e=7L76Zi let me know if it works Cheers

[@schajuli1991]

@@PhilippGalvanDesign oh lookl, a little Christmas gift ;-) thx

[@radouaneboutaboute156]

Thank you for this👍👍 great tutorial

[@PhilippGalvanDesign]

Glad it was helpful!

[@gauravgoswami3371]

Very helpful. Thank you very much!

[@PhilippGalvanDesign]

You're welcome!

[@schajuli1991]

Do you have found any issues with Rhino 7 yet - is it safe to upgrade, or are there probably some plugins not working yet?

[@PhilippGalvanDesign]

I haven't had any issues so far, except that my graphic card can't handle certain viewport modes when I want to save the viewport as an image in a large size. But I guess that's more a graphic card memory issue then a rhino issue. my graphic card is really really old. I don't have any plugins so I can't advice on that. But who doesn't want the new subD tool. ;)

[@schajuli1991]

@@PhilippGalvanDesign Ok, actually troubles with viewports is something I am used to as well in since ever. Might be indeed some incombatibilities, don't think it's about inadequacies as the quadro is actually performing quite good. SubD might be nice but in first place it's priority number one to keep the system running. Coming back to Ladybug and tools, as far as I understood with the new version the legacy scripts will work with the new version out of the box but the backward compatibility is of course gone. Or do I have to touch the scripts too?

[@PhilippGalvanDesign]

@schajuli - regarding the video card - actually Rhino notified me today that my video card driver needs an update. :). Legacy tools - yes they have worked so far within the latest Ladybug tools without a problem. Haven't had any issue so far but in any case, it would be good to modify them to work with the latest code which seems to have undergone some important improvements. It's also possible to install both to run in parallel too.

[@schajuli1991]

@@PhilippGalvanDesign ok, good to know - I may then give it a try during the holidays and test it in a safe environment

[@lucianolizana446]

Thanks a lot for this! is really helpful

[@PhilippGalvanDesign]

You're very welcome!

[@user-yk1cw8im4h]

how does your mapped surface of the grasshoppoer data not mixed with the rhino model in the viewport? mine is overlapping with it and I had to hide the rhino model, but then I couldn't see the form well

[@PhilippGalvanDesign]

There is the option to offset the result from the original model. Either give it more offset or yes hide the original model. I normally hide the model and the play with the display modes...

[@user-yk1cw8im4h]

@@PhilippGalvanDesign Thanks for your reply. Which option is it? I tried _offset_dist_ but that's for other purpose. Also I didn't notice you have offset the result in your video? I don't want to hide the model because then I can't see the topography of the base as clearly for example.

[@PhilippGalvanDesign]

Can I ask in with units you are operating? I hope meter. The offset dist. is exactly for that reason to offset the result from the original model so it's not overlapping

[@PhilippGalvanDesign]

Yes the result changes slightly with the distance. But if you use a small number like 0.1m it's going to be a non recognizable difference. I normally bake the result and hide the original model. Also I would suggest to turn off the preview for all GH components except the solution.

[@user-yk1cw8im4h]

@@PhilippGalvanDesign Thanks for your help, but the mapped surface isn't changing in height. I did try to connect the points output of the component to a native Grasshopper Point parameter component and I can see it moves the points at which the sun visibility is being evaluates. However the coloured surface isn't moving.

[@janew6537]

Thank you for the great tutorial

[@PhilippGalvanDesign]

You are very welcome.

[@kitchenroot173]

hello Philipp, thanks for this great tutorial! I have a question concerning sun hours, so I don't really understand how we can see the analysis of a period. Can we use the same way to analyze at a specific hour of the day?

[@PhilippGalvanDesign]

@Razan Atwi - Yes I think didn't explain it good enough. So for example, if you measure one specific hour of direct sunlight with this tool using my example building the output would be that some Areas have direct sunlight the others don't. meaning that some Areas have 1 as a result others 0. (yellow or blue) Now, the analysis period tool feeds a list of all hours in the period into the sun vector tool. This then creates a list of sunlight directions (vectors) for each hour. The sun hour analysis tool takes these vectors and tests each sun direction with the test surface. From all the sun direction in a period, let's say 8 hours, some areas might get all 8 hours direct sunlight and others only 7 or less, some areas might get 0 hours of sunlight. the heat map then colours the each Area depending on how often it was hit by the sunlight. yellow for 8 hours - red for 4 hours - blue for 0 hours and all the colours in between. hope that makes sense? let me know if it's more clear? thanks for the question. cheers philipp

[@kitchenroot173]

@@PhilippGalvanDesign thanks alot, that's clear for me👍👍

[@卢唯]

超级感谢！

[@PhilippGalvanDesign]

没问题!