Cull even/odd rows

Hi,

could it be that it isn't possible to cull even or odd rows with the "normal" grasshopper components?

For example, I have this in one list:
{0;0;0;0;0}
{0;0;0;1;0}
{0;0;0;2;0} ...
{0;0;1;0;0}
{0;0;1;1;0}
{0;0;1;2;0} ...
{0;0;2;0;0}
{0;0;2;1;0}
{0;0;2;2;0} ...
{0;0;3;0;0}
{0;0;3;1;0}
{0;0;3;2;0} ...
...

and I would like to have this in two lists separated:

{0;0;0;0;0}
{0;0;0;1;0}
{0;0;0;2;0} ...
{0;0;2;0;0}
{0;0;2;1;0}
{0;0;2;2;0} ...
...

{0;0;1;0;0}
{0;0;1;1;0}
{0;0;1;2;0} ...
{0;0;3;0;0}
{0;0;3;1;0}
{0;0;3;2;0} ...
...

How can I do that?

Replies to This Discussion

Permalink Reply by Chris Tietjen on May 14, 2011 at 5:26am

I couldn't quite duplicate you branching scheme but this might indicate a method.

Chris

Permalink Reply by KlKl on May 14, 2011 at 5:50am

Your definition works, but i'm using sqaregrid-component. so i don't get the rows.

Attachments:

cull-even-odd-rows.png, 123 KB

Permalink Reply by Pieter Segeren on May 14, 2011 at 6:05am

the pattern is True False, the slider is an integer slider so 0 or 1 (you could use a boolean switch instead)

Permalink Reply by Chris Tietjen on May 14, 2011 at 6:28am

If you want the rows I think you just need to insert a flip matrix component after the point component.

Chris

Permalink Reply by Danny Boyes on May 14, 2011 at 11:49am

Here's a method that will look at the required branch number and identify split accordingly.

The Split String component uses the semi-colon so the first and last items in this list will still have the { or } accodingly. If you need to get to these items then you will need to Replace String for { and then again for }.

So in the example above the branch to cull is the index 1 and then the %2 component gives a boolean pattern to dispatch the relevant branches into separate lists. The Cherries then Clean the Empty Branches out so that only the relevant items are in the correct list. With out this then there will be empty branches for the none required items.

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