ay be other issues with your geometry, but this is usually the issue people run into.)
Rays will lose energy much more slowly when a room is very reflective, but such conditions only really exist with polished painted concrete. I don't know how many such rooms you've ever been in. I can count them on one hand - and I've been to acoustic reverberation chambers on 3 continents.
Pachyderm works with a ray decimation algorithm. This means that a ray will be traced out to the cutoff time, unless it has lost enough energy that its further contribution to the impulse response is negligible. At this time, the ray is discontinued. So, the more absorption in the room, the less time it will take to run the simulation. So, more realistic absorption coefficients will allow a model to run in a more reasonable amount of time.
Gypsum board/Plasterboard will typically be between 8 and 11 percent at mid and high frequencies, and higher at low frequencies, for example. Concrete, unless polished and painted, is still a little porous, so you can probably make it 3 to 5 percent.
Regarding sources and receivers, adding more receivers adds almost nothing to calculation time (until the every end, when it extrapolates a pressure response, anyway). This is because the receivers are entered into a spatial partition system, which allows it to be done in an optimized way. Adding multiple sources will effectively multiply the calculation time by the number of sources, because the simulation needs to be repeated for each source individually.
Hopefully this helps you figure out how to run simulations with reasonable run times.
Arthur…
ist.
In other words, I'm looking for the GH equivalent of
Dim x As New List(Of List(Of List(Of Double)))
For example, I might have an outer list of 10 items each containing 20 lists with 30 items inside each 2nd tier list.
Say the outgoing gh_Structure is:
Dim outgoing_Struc as new gh_structure(of gh_number)
I can't seem to figure out how I might use the "append" method to GH_Structure to insert items to specific paths to create a list of a list.
The additional complexity is that I want to customize the indices of the outgoing list. Instead of the outer most list running straight from 0 to 9, I might want to have its indices non-sequential as {0}, {2}, {5}, {11} for example. This helps in using the "Tree Item" component downstream as these specific non-sequential indices refer to something specific upstream.
For example, with custom indices, I can pull a specific sublist by using index {11;3} which may not exists if the indices ran sequentially.
I guess the more general questions is whether anybody has pointers on creating nested trees in a custom component with specific indices? It appears that GH_Path has a "DebuggerDisplay" property which masks the internal continuously running index but this is a read only property.
Any pointers would be helpful
Thanks.…
Added by kermin chok at 1:37am on December 10, 2013
asuring Urbanity."
The seminar aims at re-centering the debate of measuring urban form on the contemporary issues of designing, planning and regulating the extensive city. It will bring together a group of international experts on the subject and the objective is to discuss the importance of combined qualitative-quantitative approaches on the generation of new insights on the contemporary urban environment and planning strategies.
The workshop presents a set of innovative approaches and methodologies using its own software. At the workshop participants will be invited to use the available toolset to address a specific urban issue where the construction of models for automatic measurement of urban indicators will be part of the urban design process.The workshop is intended for all urban planning professionals who want to improve their skills and knowledge as well as for students or doctoral students in urban planning. The CIAUD will issue a participation certificate equivalent to 3 ECTS credits.The workshop will run from 7 to 12 May 2012 and the seminar will be held on May 11, 2012 in FAUTL.The seminar and workshop program can be found attached ora t the website: http://www.measurb.org/en/home.html We thank in advance for the dissemination of this event to whom might be interested.
Best regards
José Beirão
Cristina Cavaco
workshop.pdf
seminar.pdf
Measuring urbanity…
se of the tool at one building per time and it is even not very efficient. For example in a situation like the image I attach I have four buildings facing the area on which I need to calculate the solar envelope that guarantees 2 hours of direct sunlight on all the surrounding facades. If I have to input the sun vectors that guarantee 2 hours insolation for the South facing facade (from 11 to 13) then the solar envelope is most likely not correct for the East and West facing facades and it totally null for the North facing facade. So the suggestion is to develop further Solar Envelope component and add to the _sunVectors input also another input for the required minimum hours on specific facades. Thank you!!
Francesco
…
he last nights, let me try to describe it:-disclaimer: I'm an industrial designer, my coding experience can be compared to your, when you were 4 year old :)-disclaimer 2: I did a picture at the end of the post that maybe explains more than my words
the component has 2 inputs (Start Value, End Value) and one output (Picked Value)
this phantomatic component (which I would refere to as "dynamic value picker") supports any amount of domains on every input -> it works as if they come grafted, from a "longest list" component
The component "at rest" shows only one slider -with question marks on both edges-
For every couple on inputs you connect (1 Start Value connection + 1 End Value connection) it would visually generate a new slider (exactly like a "number slider" component)main difference from the "number slider" component, this one would show the Start Value and End Value numbers at the edges of each thus generated slider
Right click -> edit on it would recall a window similar to the "number slider", with the main difference that only the first part of those options would be present (see attached image for clarity)Whatever slide accuracy you set, it will affect the whole "dinamic value picker" phantom component (if you set "integer numbers" and for any reason one or more inputs are "floating points numbers", the component automatically rounds the inputs to the best "Integer", and allows you only to pick integer numbers in-between)
If you suddenly change a "Start Value" or an "End Value" input, the affected slider/sliders in the component will try to stay as close as possible to the same % value they were before (example if the domain was from 5 to 11, integers only, and you first picked the value 8, the slider was exactly in position 50%: when you change the End Value domain to 21 the slider will set itself to 13 - yes, I picked an easy one lol )
When you first plug a couple of Start Value + End Value, the slider sets itself to Picked Value = Start Value
It could also be possible to supply negative values as Value End and positive values as Value Start: the slider let you pick a number on that domain regardless of the numerical order you use
Last thing, but it's just fancy imagination, if you zoom-in the output (Picked Value) connection dot, a little - and + appears (like in other common components), letting you add a new cursor to every existing slider (it could be possible to customize the color of the new cursor to avoid confusion)
This is the exact description of what I would ask to the lamp genie :)
I attach a pic I just did, in the hope to better explain myself: picture link
and of course thank you again for reading this long poem!
…
nent is the empty parameter component that will reference a curve. In this case it is used only so that I could disable the preview of the ellipse that includes the rather largish and distracting origin plane. I am not sure where the right half of the definition begins so I best start early.
Ellipse and its foci are all move Y-ward.
The moved ellipse is then moved z-ward.
Since I have moved the ellipse as well as its two foci, I need to have access to both the ellipse and these two points.
Exiting from the series component will be the numbers 1 and 2 that indicate the two focal points of the ellipse.
Now lines can be drawn between the original ellipse and the moved ellipse.
These lines are divided.
At this point the structure of the data is such that connecting a line only replicate the two lines already drawn since it will connect two rows of 11 points in this case. What is needed is an arrangement of 11 rows of 2 points (the parameter viewer is a reliable friend). To do this, I could have used the Path mapper, but now David has given us the Flip Matrix component that does this with ease.
Now a polyline will produce the rung-like lines connecting the points on each line.
I hope this makes sense and does not seem overly pedantic.…
Added by Robin Dripps at 9:04pm on September 19, 2010
hat cross that one section?
What about the other 54 sections of the large surface?
Three of the ten vectors created from those lines go in opposite directions - so how useful is their average ('Avr')? Maybe that's why...
You want to subdivide ('SubSrf') this one section (of 55 total on the larger surface) and find the line segments (which become vectors) that cross each sub-section?
Is this correct so far?
By the way, in the second part of your code on the right, you are using 'VRot (Rotate a vector)' to rotate a line - that you created from a vector; probably could be simpler?…
your case), then subtract one and select the item at that index. Remember that items in lists are accessed using a zero-based system, so the first item is at index 0, the second item at index 1 and so on.
It's easier however to cheat and use an index of -1 and make sure Wrap is set to True. This will allow you to select the last item in a list without measuring the length of the list first. If you use -2 you'll select the second to last item, and so on and so forth.
--
David Rutten
david@mcneel.com
Tirol, Austria…
Added by David Rutten at 12:29pm on August 30, 2013
re-organized code, the preview at "(1)" is static, before the simulation; it is hidden to see the simulation. The preview at "(2)" is the simulation, which traces each tool path and then reveals each one piped.
…
Added by Joseph Oster at 5:56pm on November 1, 2017
Mmm really nice post. Usually light electronic Trip Hop, or spanish Hip-Hop.
Portishead
Radiohead
Massive Attack
Propellerhead
SFDK
Juaninacka
Tote King
Best Regards ;)