Shifting Data within a List

Hi, I have a list of data composed of sub-lists of data. I want to shift the first data of each sublist to the end of the sublist. Like shown in the diagram below.

I think I somehow can use the SHIFT component, but I am not sure how to decompose the list first and compose them at the end.

Replies to This Discussion

Permalink Reply by Darren Chang on June 28, 2012 at 9:22pm

Hmmm... haven't got any reply to this question. Is it too easy to answer or too hard to answer? I have attached the file where I want to resolve this problem. It's a triangulated diagrid. All are working now except one diagrid. I think if I can find answer to the above data shift issue, I can make it work.

Attachments:

Surface Diagrid-triangluated.ghx, 422 KB
Surface Diagrid.3dm, 256 KB

Permalink Reply by Rhydro on June 29, 2012 at 1:12am

Hi Darren,

You could maybe extract sublists from your main list, and then use a Shift List component with Wrap input = 1, and then merge your datas to rebuild the complete List

Permalink Reply by Darren Chang on June 29, 2012 at 1:22am

I know that. But my list has (i+1)*J elements, and I need to extract J sublists, each of which is i+1 long. Both i and J are variables. How do I do that?

Permalink Reply by Rhydro on June 29, 2012 at 1:32am

Is it you who sets these values ? (With a slider for exemple)

If it is, you can extract your sublists using domains created by series, like done here : http://www.grasshopper3d.com/forum/topics/list-division

Permalink Reply by Darren Chang on June 29, 2012 at 4:24am

Rhydro, this is exactly what I was asking for. Now it's working. thnx!!

Permalink Reply by Rhydro on June 29, 2012 at 5:17am

You're welcome :)

Permalink Reply by Gongming Liu on June 29, 2012 at 3:00am

As I found in your file, your data tree is not like what you said in the picture above. Each of your date tree branch only has one Index that you can't shift them like semetaneously by different floor levels. What I did to you is Divide your flated data tree into 5 levels (each one has 7 points) and connect with polyline. That's it, you don't have to shift and line it.

PS. good try by using "mapping tree"

Attachments:

SurfaceDiagridtriangluated(revised).ghx, 551 KB

Permalink Reply by Darren Chang on June 29, 2012 at 4:25am

man, why you parse your data manually one by one? if I change the size of the data set, you have to go back to the code and mannually match the new size? I don't think this is working, unless I understood your code wrong.

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