0.533000void brightfunc skyfunc2 skybright perezlum.cal010 1.382e+00 3.201e-01 1.066879 -0.754821 0.015485 -0.048998 -0.089403 0.066341 -0.860010 0.505947
The values in bold are then evaluated using the equations in the file perezlum.cal inside the RAYPATH directory in Radiance..
{ All-weather Angular Sky Luminance Distribution . Additional arguments required for calculation of skybright: A1 - diffus normalization A2 - ground brightness A3,A4,A5,A6,A7 - coefficients for the Perez model A8,A9,A10 - sun direction}skybright = wmean((Dz+1.01)^10, intersky, (Dz+1.01)^-10, A2 );wmean(a, x, b, y) = (a*x+b*y)/(a+b);intersky = if( (Dz-0.01), A1 * (1 + A3*Exp(A4/Dz) ) * ( 1 + A5*Exp(A6*gamma) + A7*cos(gamma)*cos(gamma) ), A1 * (1 + A3*Exp(A4/0.01) ) * ( 1 + A5*Exp(A6*gamma) + A7*cos(gamma)*cos(gamma) ) );
This data is then mapped to the "glow" material that represents the celestial hemisphere...You can edit the climate based sky produced by Honeybee and enter your own values. The other option would be to just use gendaylit from DOS Prompt.…
nts but as there are polylines and surfaces in it, they are conflicting as the geometries are overlapping and intersecting.
The input for the model is a centre point and four connecting points: we can call them CNT, A, B, C and D. The model works for these points - it's quite complicated with lots of polylines, vector geometry, surfaces, rotations, etc. - but it still works and has an output of two breps.
If I had a compilation of N sets of CNT, A, B, C and D's, is there a way of feeding each of these into the grasshopper in individual sets rather than just plugging in the huge set of numbers - e.g. feeding in CNT1, A1, B1, C1 and D1 and getting a result before moving on to CNT2, A2, B2, C2 and D2?
I've tried looking through tree structures, but it seems to be failing when the size of the set isn't known - e.g. how to extract all the information from trees when N isn't know using list item (i=0, i=1, i=2..., i=N).
I hope I've managed to explain the problem adequately, I can make up an easier to understand Grasshopper model later if I haven't explained well...
Thanks in advance for any comments, pointers, etc.…
. etc. So it's 80020 which is ~1058. Assuming you're allowed to use the same component more than once.
1058 × 1049 = 10107 total possible algorithms. When talking about big numbers I only have three frames of reference. The distance from us to the edge of the observable universe is roughly 1029 millimeters, the observable universe contains 1080 protons and the volume of the observable universe is roughly 5×10105 cubic nanometers. So you could more or less put a different valid Grasshopper algorithm into every cubic nanometer of this universe.
--
David Rutten
david@mcneel.com
Poprad, Slovakia…
gn-by-many-designbymany/
The first sponsored challenge is to create a parametric version of Buckminster Fuller’s Dymaxion House.
It would be AWESOME to see it done in Grasshopper! And.. You can win a pretty sweep HP desktop plotter. The deadline is this Friday.
Hope to see you on the site and look for some new GH and RhinoScript videos coming soon.
Thanks,
Dave…
Added by David Fano at 12:28am on December 15, 2010
pts organize in a data tree without losing the data structure. To create a folding surface as per image attach.
1. Replace items (to create a gradient) / Like the weight culling example.
Path {0} replace all indexes with a new value (a)
Path {1} replace 90% indexes with a new value (a)
Path {2} replace 80% indexes ...
2. Decrease value (a) in relation to path number
3. After Replace the above items value with
for even path number {0,2,...} replace items with a negative number
Did not find a easy way to create data tree that would achieve the above inside GH.
Point 2 & 3 are easy but i could not found a simple solution for points 1.
At the moment the only way i found is to create the list in Excell manually and import/ export or to create a list on indices for each path.
Any hint appreciated.
Might need to wait for the number slider or path mapper to accept input or notation ?
best
Stephane
…
raries folder, seems that you need plankton.gha.
Unlock, place in folder, restart rhino+gh...
That's all.
To use it... in a basic way:
Input 0. Plug geometry.
Input 1. Set target resolution, actually it refers to the mesh edge length.
Optional input 2 and 3. Sets anchors (as points or curves) for the remeshing not escape of these parts.
Input penultimate. Number of iterations. Here are two ways, the living form, you set a low value (as 5 or 10) of iterations and plug in a timer component (that allows you to see the remesh process); or just add the total number of iterations (I generally use 80, but its relative).
The last input, set false to turn it on, true to turn it off.
For advanced configuration, trial and error, or see the code on Pikers's github.…
ьютера за требуемое время не получен нужный отклик, или было разорвано уже установленное соединение из-за неверного отклика уже подключенного компьютера 178.63.48.217:80This component requires OSM data to be downloaded from openstreetmap.org. It has just failed to do that. Try the following two fixes: 1) Sometimes due to large number of requests, the component fails to download the OSM data even if openstreetmap.org website and their services are up and running.In this case, wait a couple of seconds and try rerunning the component. 2) Try lowering the "radius_" input. If each of two mentioned advices fails, open a new topic about this issue on: www.grasshopper3d.com/group/gismo/forum." …
- 100.
After that, I want to separate it into 5 different lists in spesific thickness.
in this case of 0-100 so it would be :
1. if the distance 0 - 20 then the thickness is 5
2. if the distance 21 - 40 then the thickness is 10
3. if the distance 41 - 60 then the thickness is 15
4. if the distance 61 - 80 then the thickness is 20
5. if the distance 81 - 100 then the thickness is 25
But, the problem is the list of distance isn't static between 0-100. It could be 5 - 250 / 3.5-175/etc.....
Could you help me how to make the expression?? Is this possible if I make one expression?
thank you.
Z.
nb: distance and thickness hasn't mathematical relation.…
Added by ZAQI FATHIS at 8:43am on November 27, 2013
a with high impact and far from easy to customize.
I'm trying to use and understand the Dragonfly_Boundary_Layer_Parameters block, whose parameter setting seems to have a huge impact on the UHI results. In particular the nightBndLayerHeight parameter. First of all, the default value in the doc (800m) does not correspond to the one in the code (80m). After having set it at 800m with a constant block, the RunUWG component doesn't run until the end, giving the following error message : "Error in ReferenceSite/VerticalDifussionModel (line 141) / Error in xml_new (line 394)". It seems that some combinaisons of nightBndLayerHeight / referenceHeight work (80 / 100 or 800 / 800) and others not (800 / 100).
Does that comes from the model preparation? Or the UWG algorithm itself?
I tried to find for some "tables" linking these weather layers to the different urban typologies... without success. Would have someone ref / paper recommandations?
Kind regards,
Rom
…