Hi. I have GH problum as shown in the picture.
277 indexes were put in the member index component, but 279 values out.
Anyone know why? Sample file here.
Member Index Error.gh (19.1 KB)
Hi @user73
That’s why some points are located in the list more than once time, such as point 22 located on positions E25 and E177. That explains the list you obtain is bigger than 277 positions.
Regards
@bbalbastre explanation is perfect, I would add that to make a fast check you can use the Create Set component to check how many unique items your list contains, and compare that (List) Length to the (List) Length of your original data: any mismatch means duplicated data in the list
in your file the list All_Point ID is the only one that does not contain duplicate data
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