CODEWITHSUNDEEP
netlogo
ELC
ELC

Reputation: 41

Netlogo: stopping model when global is constant for X amount of ticks

Currently I am constructing a model on opinion dynamics and want the model to stop automatically when a certain global variable global-participation-rate remains unchanged for X amount of ticks. I probably should include something like 

if stop-ticking? [stop]

in my go procedure. With the report looking something like this: 

to-report stop-ticking?    
 ifelse (??) = ??     [report true] [report false]
end

What code should I use to check whether the global remained unchanged for a certain amount of ticks?

Upvotes: 0

Views: 94

Answers (2)

Alan
Alan

Reputation: 9620

The easiest way is to add a new global to keep count. E.g., (abbreviating global-participation-rate to gpr):

globals [gpr ct-gpr]

to update-gpr
  let old-gpr gpr  ;store old value
  set gpr get-gpr  ;compute new value
  ;increment or reset the counter:
  set ct-gpr ifelse-value (gpr != old-gpr) [1] [1 + ct-gpr]
end

Upvotes: 2

JenB
JenB

Reputation: 17678

You need a global variable for either the participation-rate or total converted or whatever. Then after your diffusion process, you do something like let new-adopters <calculation> and if-else new-adopters = total-adopters [stop] [set total-adopters new-adopters]

If you need more than one time point comparison, then you need to create a list rather than a simple value and add the new value to the end of the list and check the end of the list is all the same number.

Upvotes: 1

Related Questions