How to remove repeated Item and single Item of list?

[ali_arch]

HI I want to remove these items from the list but I cant with boolmask or comper or…any one can show me the solution?

NOT according with index please

[jacob.small]

Can you explain the logic behind excluding indicies 3,4 and 5? I don’t quite understand what you’re after here.

[bvs1982]

Same topic twice?

https://forum.dynamobim.com/t/separate-the-repeated-item/89551

[ali_arch]

i mean i dont want use of index…same as ITEM OF INDEX

[ali_arch]

it was according to index

[jacob.small]

But 0 and 180 are not the same…

[ali_arch]

I found it…thanks alot

[jacob.small]

Ah! You’re looking to get angles which are orthogonal to the base direction.

I’d use the modulo function here instead of defining a list as it will provide more consistent results.

n%90 == 0 in a code block, or % node followed by a == node.