afc.dd {afc} | R Documentation |
Routine to calculate the Generalized Discrimination Score (aka Two-Alternatives Forced Choice Score 2AFC) for the situation of dichotomous observations and dichotomous forecasts
afc.dd(obsv, fcst)
obsv |
vector with dichotomous observations (values in 0,1) |
fcst |
vector of same length as obsv with dichotomous forecasts (values in 0,1) |
This routine applies Eq.2 of Mason and Weigel (2009) to calculate the 2AFC.
p.afc |
Value of Generalized Discrimination (2AFC) Score |
Andreas Weigel, Federal Office of Meteorology and Climatology, MeteoSwiss, Zurich, Switzerland
S.J. Mason and A.P. Weigel, 2009. A generic verification framework for administrative purposes. Mon. Wea. Rev., 137, 331-349
#Forecasts and observations of Nino-3.4 index
#Load set of dichotomous observations and dichotomous forecasts
data(cnrm.nino34.dd)
obsv = cnrm.nino34.dd$obsv
fcst = cnrm.nino34.dd$fcst
#Calculate skill score
afc.dd(obsv,fcst)