Grasshopper

algorithmic modeling for Rhino

Reparameterize List Values

This may be more of a logical question than GH, but I'm looking for means to translate the method into GH:

I have a list as follows: [11,12,13,14,15]

I have selected a random item from that list, in this case "13."

I am trying to find the logical way to output that item value as a percentage of the overall list's domain. For example, I need to convert 13 to a value of .5 representing it being the median value of the list. 11 would be 0.0, 12 would be .25, etc...

Any help would be greatly appreciated

Views: 1815

Replies to This Discussion

Permalink Reply by Laurent DELRIEU on June 7, 2015 at 2:50pm

If you know the item number it is 

item/(list_length-1) 

item goes from 0 to (lenghth-1) so result go from 0 to 1. 

Permalink Reply by nikos tzar on June 7, 2015 at 3:08pm

Hello Zak, Laurent,

If by "median value" you mean its in the middle of the list, then its what Laurent said.

If you are talking about its numerical value then you can try something like this (remap all the numbers from domain(11 to 15) to domain (0 to 1):

Permalink Reply by Zack on June 7, 2015 at 3:15pm

Nikos, 

Thank you, that is exactly what I was looking for

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