Binary Combinations

Hi all,

I wish to write all the binary combinations that exist in X number of figures,

so it's structure would be (for a 2 figure binary toggle)

{0}

(0) 0

(1) 0

{1}

(0) 0

(1) 1

{2}

(0) 1

(1) 0

{3}

(0) 1

(1) 1

any ideas how I can generate such a list?

Seasons Greetings,

Replies to This Discussion

Permalink Reply by David Rutten on December 21, 2012 at 1:31pm

not particularly flexible, but if you don't want N to be variable, this will do the trick.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by David Rutten on December 21, 2012 at 1:35pm

Oh I'm sorry, this is the scripting forum, missed that.

Convert.ToString(int, int)

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Kane Borg on December 21, 2012 at 4:02pm

Hi David,

Firstly, congrats for your work, respect.

So, I am trying to list all the possibilities of trusses from ground structure method for 6 node 15 member truss. All the possibilities that exist 2^15 are being listed. Later I will use this info to cull;

all instances where important nodes are not present,

geometric unstable trusses using Grubler's criterion,

the remainder will go to FEM for further analysis,

I can use this method but i require to separate each binary boolean

so they are stored separately like so;

{0}
(0) 0
(1) 0
(2) 0
(3) 0
(4) 0
. .
. .
. .
. .
(15) 0

{1}
(0) 1
(1) 0
(2) 0
(3) 0
(4) 0
. .
. .
. .
. .
(15) 0

{2}
(0) 0
(1) 1
(2) 0
(3) 0
(4) 0
. .
. .
. .
. .
(15) 0

(I know there must be an easier scripted way how to do it) or else is there a way to decompose them directly from the method you sent me using standard Grasshopper components?. Any method would work.

Best,

Kane

Permalink Reply by David Rutten on December 22, 2012 at 1:32am

Once you have a string with zeroes and ones, it's easy to convert it into an array of booleans or integers. I attached a script that does this I think.

David Rutten

david@mcneel.com

Poprad, Slovakia

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