list of "who" numbers in order of a turtles-own variable?

[Unruh Lee]

Hi and thanks in advance for any help, 

In a model like Wealth Distribution, in the built-in models library of Netlogo, you can create an ordered list of turtles' "wealth" variable, thus: 

    let sorted-wealths sort [wealth] of turtles

How would one create a corresponding list of the "who" numbers of all those turtles? That is, in order of their "wealth" variable? 

This seems like it should be simple but I'm not having luck figuring it out. 

Thanks, 

Lee

[Wade Schuette]

You need "sort-on"

;; =============== try this -==============

turtles-own [ wealth ]
to setup
  clear-all
  create-turtles 8 [ set wealth random 100 ]

  let sorted-wealths sort [wealth] of turtles

  print sorted-wealths
  let sorted-turtles sort-on [wealth ]  turtles
  print sorted-turtles
  foreach sorted-turtles [ x -> print (word [who] of x " has $" [wealth] of x)]
end
;;================================================
 

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[Unruh Lee]

You just made me realize I was using an old version of the Netlogo primitives dictionary, which did not include "sort-on"! 

Thank you, Wade!

Lee

[James Steiner]

Also: note that Wade showed you how sort-on gives you a list turtles, not who numbers, which is a best practice.    Unless you have a very good reason to do so, never work with who numbers ,,, just work with the turtles. 

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[Unruh Lee]

Thank you, James!

Lee