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Subject: Re: RE : RE : drawing of lots
From: Pierre Bommel (pierre.bommel@laposte.net)
Date: Tue Jun 07 2005 - 21:49:52 CEST
Hello Romain,
I have just developped a new menu of the probes' window that enable to
save data from a simulation: global and local data.
You can save the selected probes into an asci file or in Excel (only
for WIndows !)
The zip file contains ST files. Load them as described here :
http://cormas.cirad.fr/fr/outil/file_in.htm or
http://cormas.cirad.fr/en/outil/file_in.htm
But for the moment, it is not possible to save local probes from the
simulationManager (the sensitivity analysis module) but I will fix that
quickly.
It should be in the next release.
However, it will not calculate average of values over several
simulations. You should do it by yourself...
Best regards,
Pierre
Le 7 juin 05, à 04:38, Romain Lorrilliere a écrit :
>
> Thanks for your quick answer, but I have a new ask.
>
> In my grey heron colonisation model, I would like to average model
> outcomes over several simulations (Monte Carlo). Does anyone know how
> to do that in Cormas.
>
> If it's not possible to get the average results directly in Cormas. I
> would like get a file ascii of state value for each cell after each
> simulation. But the software does not export any data.
>
> Thank you in advance!
>
> Romain
> ________________________________________________
>
> Lorrilliere Romain
>
> Adresse postale : 3 allée Charles Lindbergh
> 44800 Saint Herblain
>
> Tel mobil : 06 81 70 90 70
> Tel : 02 40 63 22 23
>
> Email : lorrilliere.romain@neuf.fr
>
> -----Message d'origine-----
> De : owner-cormas@cirad.cirad.fr [mailto:owner-cormas@cirad.cirad.fr]
> De la part de Christophe Le Page
> Envoyé : mardi 24 mai 2005 14:55
> À : 'Romain Lorrilliere'; cormas@cirad.fr
> Objet : RE : drawing of lots
>
>
> Bonjour Romain,
>
> You need to write two functions, the last one being the main one:
>
> probaPoisson: mu value: i
> ^(mu ** i * mu negated exp / i factorial) asFloat
>
> getValueFromPoisson: mu
> | randomValue i found cumul |
> randomValue := self random.
> i := -1.
> found := false.
> cumul := 0.
> [found not] whileTrue:
> [i := i + 1.
> cumul := cumul + (self probaPoisson: mu value: i).
> found := randomValue < cumul].
> ^i
>
>
> Let me know if this is what you needed.
> Please send us your manuscript by the end of your master thesis, I'll
> add it to the list of students' contributions. I'm quite sure
> your Cormas model will greatly interest some people around !
>
> Clp
>
>> -----Message d'origine-----
>> De : owner-cormas@cirad.fr [mailto:owner-cormas@cirad.fr] De la part
>> de Romain Lorrilliere
>> Envoyé : lundi 23 mai 2005 16:38
>> À : cormas@cirad.fr
>> Objet : drawing of lots
>> Dear members,
>>
>> I’m modelling the dynamic population of the grey Heron and i d like
>> to define some t to t+1 transitions in the status of cells according
>> to a random drawing from a Poisson distribution.
>> Does anyone have an idea on how i could achieve that?
>>
>> Thinks
>>
>> Romain
>> ________________________________________________
>>
>> Lorrilliere Romain
>>
>> Etudiant Master 2 Muséum National d'Histoire Naturelle
>> Evolution, Patrimoine Naturel et Sociétés
>> Specialité :Systèmatique, Evolution & Paléontologie
>> Orientation : Informatique appliquée à la biodiversité
>>
>> Adresse postale : 3 allée Charles Lindbergh
>> 44800 Saint Herblain
>>
>> Tel mobil : 06 81 70 90 70
>> Tel : 02 40 63 22 23
>>
>> Email : lorrilliere.romain@neuf.fr
>>
>>
Pierre Bommel
SHIS QI 26, Conjunto 15, Casa 18
71670-150
Brasilia DF
tel: (00 55 61) 367 3405