Cull even/Odd numbers

Replies to This Discussion

Permalink Reply by Danny Boyes on October 20, 2010 at 7:49am

Like every thing in GH there is more than one approach to this
1) Cull Pattern component will allow you to do this. With a pattern of two booleans either False True or True False.
2) Cull Nth when set to 2 will cull every other integer so to get Odd Integers shift the list one place first.

Permalink Reply by Alpha222 on October 20, 2010 at 8:21am

And Dispatch do the same thing.

Permalink Reply by biboarchitect on October 20, 2010 at 9:15am

Hi Danny and Alpha.

Thanks a lot for your reply.

You haven't got my point. My list is NOT listed odd - even-odd-even, so a cull pattern won't work, its just a list of numbers where I have odds and evens mixed up, and I want to cull only Odds.

May be I wasn't that clear, here is what I want to do:
I have a surface where I have openings on it using image mapper, creating 2000 different circles according to the image intensity, and I want to optimize that number a bit, so I rounded up the number to the nearest tenth, so I got 14 different values for all the circles, I need to cull the odd ones!, I need to cull to ODD ones only and give it the value of the closest even number for less opening sizes.

bibo

Permalink Reply by Tobias Schwinn on October 20, 2010 at 12:22pm

Bibo,

have you tried something like this?

Let me know if this makes sense.

Best,
Tobias

Permalink Reply by biboarchitect on October 20, 2010 at 1:24pm

Hi Tobias,

Thanks for your reply, Will try it first thing in the morning and will let u know

regards

bibo

Permalink Reply by Nay Soe on November 14, 2010 at 3:42pm

Had to use this method too, i'm not sure what "mod" does, can you explain? thank you

Permalink Reply by biboarchitect on October 20, 2010 at 10:48pm

Hello Tobias,

your method works fine with randoms, but it didn't work out with my list, dunno why. it returns all numbers as 0.

I have attached the file, I will really appreciate any body's help.

regards

bibo

Attachments:

• Image effect-4.ghx, 350 KB

Permalink Reply by Danny Boyes on October 21, 2010 at 2:26am

It will only work with whole numbers. I suggest multiplying by 10 before the Mod f(x) and then dividing after if you are looking for even and odd decimals. Sorry about confusion earlier i should r.t.f.q. better in future. There should be a user's experience level flag at the beginning of the post so that you know to look past the obvious :)

Permalink Reply by biboarchitect on October 21, 2010 at 5:01am

Hi Danny

Thanks for the multiply hint!


bibo

Permalink Reply by Danny Boyes on October 21, 2010 at 6:29am

Just incase anyone else mentions it. You could also do 0.2 in the f(x) component but there does seem to be a rounding issue with this method so I still think the multiply by 10 option is more reliable.

Permalink Reply by biboarchitect on October 21, 2010 at 7:11am

thanks a lot Danny.. that was really helpful!

bibo