How to find the top adjacent element of a list of walls

Hi
I need to find the top adjacent element for a list of walls.
Could you guide me on how I should do it in Dynamo?

Regards,
Farshid

Give it your best shot with google as your friend and then come here if you have a specific question.

Some guidance, if you have a specific type of element you are looking for try searching for nearest element of category from point…

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Raybounce from DataShapes

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