fdbk_dt_reliability_diagram: Calculate the reliability diagram statistics

In rfxf/Rfdbk: Handling NetCDF feedback files

Description

Calculate the reliability diagram statistics

Usage

fdbk_dt_reliability_diagram(DT, thresholds = "", by = "", breaks = "")

Arguments

DT	data.table (columns 'veri_ens_member','obs' and 'veri_data' plus all variables to make forecasts distinguishable are required!!!)
thresholds	list of threshold for variable names in DT (if "" uses obs median)
by	stratify crps by (e.g. c('varno','veri_forecast_time'))
breaks	breaks used to bin the forecast probabilities

Value

data.table with columns forecast bin and observed frequency for each varno/threshold

Author(s)

Felix <[e-mail]>

Examples

require(ggplot2)
fnames    = system("/bin/ls ~/examplesRfdbk/eps/*12/verSYNOP*",intern=T)
condition = list(veri_description="grepl('member',veri_description)",
                 state="state%in%c(0,1)",
                 statid="!is.na(as.numeric(statid)) & !duplicated(statid)",
                 veri_forecast_time="veri_forecast_time>=1200")
columns   = c("obs","veri_data","varno","veri_ens_member","veri_forecast_time","statid","veri_initial_date")
DT        = fdbk_dt_multi_large(fnames,condition,columns,5)
ATTR      = fdbk_dt_reliability_diagram(DT,thresholds="",by=c("varno","veri_forecast_time"),breaks="")
ggplot(ATTR,aes(x=fbin,y=obin,color=factor(veri_forecast_time),group=veri_forecast_time))+geom_line()+geom_point()+facet_wrap(~varno)+ geom_abline(intercept = 0, slope = 1)+theme_bw()

rfxf/Rfdbk documentation built on May 27, 2019, 7:22 a.m.