Stupid question but is it possible to return a netlogo list to the oms script? I guess yes as I saw some issues (#319 and #323) about it. But I have no idea how I should do it. I tried various things and no success so far.
Val[Array[Double]] gives me:
Error when fetching netlogo output talents in variable (talents: Array[Double])
Maybe I haven’t looked at the good place and there is a doc with the different type/cast possible? …
Hi Simon,
it is possible. Could you provide your OpenMOLE script here, so I can look at it ?
Romain
Here is the oms script (nothing much more than what the wizard created):
val seed = Val[Int]
val numberOfIndividuals = Val[Double]
val ppOfLuckyEvents = Val[Double]
val numberOfEvents = Val[Double]
val meanTalent = Val[Double]
val stdevTalent = Val[Double]
val sizeOfIndividuals = Val[Double]
val initialSuccess = Val[Double]
val simulationTime = Val[Double]
val time = Val[Double]
val talents = Val[List[Double]]
val successes = Val[List[Double]]
val launch = List("setup","go;;You should set your stopping criteria here instead")
val tvlmodelTask = NetLogo6Task(workDirectory / "TvLmodel.nlogo", launch, embedWorkspace = false, seed=seed) set(
inputs += (seed),
inputs += numberOfIndividuals mapped "number-of-individuals",
inputs += ppOfLuckyEvents mapped "pp-of-lucky-events",
inputs += numberOfEvents mapped "number-of-events",
inputs += meanTalent mapped "mean-talent",
inputs += stdevTalent mapped "stdev-talent",
inputs += sizeOfIndividuals mapped "size-of-individuals",
inputs += initialSuccess mapped "initial-success",
inputs += simulationTime mapped "simulation-time",
outputs += talents mapped "talents",
outputs += successes mapped "successes",
//Default values. Can be removed if OpenMOLE Vals are set by values coming from the workflow
seed := 0,
numberOfIndividuals := 1000.0,
ppOfLuckyEvents := 50.0,
numberOfEvents := 1000.0,
meanTalent := 0.54,
stdevTalent := 0.17,
sizeOfIndividuals := 7.0,
initialSuccess := 5.0,
simulationTime := 35.0)
tvlmodelTask hook ToStringHook()
Thank you very much for your help btw 
reactive community we have here 
:
simon
Hi Simon,
The Val[List[Double]] prototype will fail with netlogolists, but a Val[Array[Double]] should work with a level 1 logo list ; (if you have nested list you should use a Array[Array[Double]])
Ok I tried that but it was returning error too. I guess maybe the problem comes from the Netlogo script.
ok I got it 
The problem was from the way I was launching the model so this:
val launch = List("setup","go;;You should set your stopping criteria here instead")
As the model was using the loop from the “run button” of netlogo I didn’t get that I should do the loop by myself in the launch command. Thus the run was only one loop of the model, the if-condition where the lists were filled was never entered. I guess that by default global variable in NetLogo are Double, thus a Double was returned in my outputs which were defined as Array. That was generating the Java error. Solved by doing that:
val launch = List("setup","while[conditionthatwasingobefore == 1][go];;You should set your stopping criteria here instead")
I gess the comment “You should set your stopping criteria here instead” was not clear enough for me 
Sorry for disturbing and thanks for the help!
Simon
Indeed, if the global output was never set it is by default at 0 in NetLogo, so it was failing trying to fetch an array to a double.
For what is run in the model, indeed you need to write yourself the full procedure inside netlogo, OpenMole won’t for example loop your go ; it is supposed to be explained in the doc https://openmole.org/NetLogo.html (section Headless Netlogo Model)
If you have feedback on the doc do not hesitate, maybe it is still a bit confused !
It may be just my fault as I haven’t wrote anything in netlogo is 6-7 years and I forget about those tricky netlogo stuff of where to handle the mainloop/stop conditions. And it’s true there is even a comment added by the wizard to remind it.
Any maybe a clear sentence to remind it to people like me may help. I opened a pull request if someone think it’s worth it! cf pr #385