This equation has the same issue as the code I posted. While the curve is the same, the units are off, as seen in my screenshot where the ymax goes well above 80
blinds be (B1,B2..B5). Then the geometry for the five iterations will be ((A+B1), (A+B2)...(A+B5)).
And assume that you are measuring illuminance at four points inside the room (x1,x2,x3,x4) and one point outside the room(y1).
The way Daysim works ( and should work as per the best of my understanding) is that for each setting of the blind (ie. B1,B2,..B5), a separate value of (x1,x2,x3,x4) gets calculated through the Daylight Coefficient Method. So let's say you have illuminance thresholds of (p,q,r,s,t) corresponding to (B1,B2,..B5). What the shade-control algorithm does is that it compares the illuminance at y1 with your threshold of (p,q,..t) and then chooses a value of (x1,x,2,x3,x4) on basis of that. So, when we repeat this process for (365x24=)8760 hours , we end up with a value of a shade setting for each hour which was set on basis of your threshold illuminance values.
I would have gladly answered your question on HB itself, however, I usually work with Daysim directly through commandline.
(BTW, if you are interested in reading more about Daysim google Christoph Reinhart's dissertation on the subject, along with some papers by Zack Rogers).…
a spline? In a more general setting of semi-algebraic sets there is the Tarski-Seidenberg Theorem http://en.wikipedia.org/wiki/Tarski%E2%80%93Seidenberg_theorem that says the projection of a semi-algebraic set is itself a semi-algebraic set. As nurbs surfaces and breps defined by them are semi-algrbaric sets this means that the projection must be reasonably nice. I could not discover whether it is always a spline. There are however reasonably nice ways to get splines from algebraic curves, though we are back to an approximation. It would be nice to have an algorithm that is guaranteed to give the precise splines when they exist (as in the example above) and will otherwise give a good approximation, I was not able to find if one has been written, even in the theoretical literature.…
define the "numOfContours_: input to 2, the terrain geometry will have only two isohypses from its highest to the lowest point. With 80, you will have 80 of them. Have in mind that if "standThickness_" input is larger than 0 (it means a stand will be created below the terrain), then the isohypses will be applied to the stand as well, as it is the continuation of the terrain.
To get the terrain elevation legend, one needs to use the "Terrain Analysis" component. Check the attached file. I changed the "source_" input, because your location is Paris suburb. In this cases the "source_=2 (GMRT - underwater terrain)" will also generate the land terrain as well. But with less precision than source_=1 and 2, which are meant to be used for land terrain.Please let us know if you have any other questions.…
Added by djordje to Gismo at 3:18pm on April 1, 2019
I'm trying to extrude a large number of them to the next surface below, they're not all at the same distance from one another so it'd have to be 84 Z components for the 84 surfaces there
, so using distance to centre point, you can give all the useless values a 1. Cutting down the values you actually need to work out by 80%. Which is helpful when approaching 1 million points.…