the 'c' in normc stans for 'normal distribution with cut-off'. The parameters 0.2 and 2 are the cut-off parameters and this means the sampled speedFactor values will allways be in the range [0.2, 2].
Tne range of 80%-120% comes from the fact that for a normal distribution, 95% of the results are within 2*SD of the mean. And sd =0.1 causes 95% of the factors to be within [0.8,1.2]. 2018-08-23 12:18 GMT+02:00 Jose Monreal Bailey <jmonr...@gmail.com>: > Hey everyone, > > I am trying to understand in the wiki > <http://sumo.dlr.de/wiki/Definition_of_Vehicles,_Vehicle_Types,_and_Routes> > the following sentence: > > Using *speedFactor*="normc(1,0.1,0.2,2)" will result in a speed > distribution where 95% of the vehicles drive between 80% and 120% of the > legal speed limit. > > As stated before the parameters are (MEAN, SD, MIN, MAX), so for max if > its 2, shouldn't it be twice ? 200%? and by MIN I am guessing that it > reduces by that factor, right? > > Best regards, > José > > _______________________________________________ > sumo-user mailing list > sumo-user@eclipse.org > To change your delivery options, retrieve your password, or unsubscribe > from this list, visit > https://dev.eclipse.org/mailman/listinfo/sumo-user > >
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