temperature - using rWBclimate for historical data in R -

i able following code work:

    world_dat <- get_ensemble_temp(world,"annualavg",2080,2100) 

but change historical , start in 1920,1939 (or earlier). unfortunately keeps saying unused arguments

    world_dat2 <- get_historical_temp(world,"annualavg",1920,1939) 

i want create world map showing historical temperatures. appreciated. thx!

the reason why "unused argument" error because arguments these 2 functions different:

get_ensemble_temp(locator, type, start, end)  get_historical_temp(locator, time_scale) 

for "get_historical_temp" function, set time_scale="year", , subset years want. e.g.:

usa_dat <- get_historical_temp("usa", "year") usa_dat_small <- subset(usa_dat, year >= 1920 & year <= 1939,                    select=c(1:length(usa_dat))) 

the outputs of these functions quite different, too. have average , summarize data "get_historical_temp" make them comparable output of "get_ensemble_temp"

also, couldn't first line work argument "world." according docs (http://cran.r-project.org/web/packages/rwbclimate/rwbclimate.pdf) have use vector of country codes in order whole world's data @ once.