infinite sweep rail

Hi there!
I am a relatively new person to GH, so I would like to ask you how to solve one simple situation. Let's say, I want to make N columns with a sweep rail command and use N distinct cross sections and N rails for that. Is there a way of combining these N actions, which are essentially one action repeated N times, in one operation or do I have to grasshop each column with a separate sweep rail command?
Thank you!

Replies to This Discussion

Permalink Reply by Jon Mirtschin on April 30, 2010 at 2:17pm

Hi Ivan,

Sure you can, and if you search the ning you'll find various pure Grasshopper approaches. If you're happy to install a plug-in, you can do it with ease including a built in section library (and you can add in your own library of profiles). Check http://geometrygym.blogspot.com

Cheers,

Jon

Permalink Reply by Ivan Sergejev on April 30, 2010 at 5:58pm

Hi Jon,
Thanks a lot for your quick answer and for the link. SSI looks really exciting, only that I need to download the SP7. Amazing stuff - looking forward to exploring it.
Thanks a lot!
Ivan

Permalink Reply by Giulio Piacentino on April 30, 2010 at 4:33pm

Hi Ivan,

this is a tree (lists of lists) question. You can read about trees in this manual, page 35. The following definition for Grasshopper 0.6.0059 shows some tree uses...

I hope it helps,

- Giulio
_________________________________
giulio@mcneel.com

Attachments:

sweep-many.ghx, 107 KB

Permalink Reply by Ivan Sergejev on April 30, 2010 at 6:03pm

Hi Giulio!
Thanks! I sensed it must be a "tree thing" when I ran into the problem, but I still decided to ask people who actually know things. Trees is something I have not yet "investigated". So thanks a lot for the reply!
Unfortunately I could not open the file you sent me, cause it said an error occurred while saving. Do you fancy resaving and sending it again?
Thanks!
Ivan

Permalink Reply by Giulio Piacentino on May 1, 2010 at 4:33am

Hi again Ivan,
if your browser is Internet Explorer, right click on the link, then use "Save object as...". Please also make sure you open the file then with Grasshopper 0.6.0059.

- Giulio

Permalink Reply by Ivan Sergejev on May 6, 2010 at 4:35am

hi Giulio,
I am still struggling with trees and wanted to ask you, whether you fancy recommending me any sources where I could learn more about them..? E.g., what all the letters and numbers mean, etc. Pardon for such dummy questions, but you have to start somewhere, right? )
Thanks a lot,
Ivan

Permalink Reply by Giulio Piacentino on May 6, 2010 at 5:25am

Hi Ivan,

the tree per se is really just an ordered data structure. It's a "list of lists", where each list has a path that is used to reach it.
If the doubt is about a specific component for trees, right click over it on the canvas and choose "Help...". The "graph mapper" component help contains quite extensive examples showing how it works. See also this discussion for further help.

- Giulio

Permalink Reply by Ivan Sergejev on May 6, 2010 at 6:14am

Hi Giulio!
Thank you very much for your reply and the discussion you sent me - it was VERY helpful! Starts to get clearer! )
Thanks again!
Ivan

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