inst/doc/yields.R

In GBcurves: Yield Curves of Brazil, China, and Russia

## ----notrun, eval=FALSE-------------------------------------------------------
#  library(GBcurves)
#  init <- "2020-05-11" # YYYY-MM-DD
#  fin <- "2020-05-17" # YYYY-MM-DD
#  mty <- c(3,6,12,120,360) # must be in months
#  ctry <- "BR"
#  df.out <- yields(init = init,
#                   fin = fin,
#                   mty = mty,
#                   ctry = ctry)