Extracts the rows of a matrix corresponding to the requested days (expressed as dates YYYY-MM-DD) given the date (origin) of the first row — extractdays • RMAWGEN

Extracts the rows of a matrix corresponding to the requested days (expressed as dates YYYY-MM-DD) given the date (origin) of the first row

extractdays(
  data = array(1:ndim_max, dim = c(ndim_max, 1)),
  ndim_max = 1e+05,
  when = "1990-1-1",
  origin = "1961-1-1",
  nday = 1
)

Arguments

data: an input data matrix where each row corresponds to a daily record
ndim_max: maximum (integer) number of rows in data where to find when. Default is 100000 and works if data is missing.
when: desired dates for which the data are requested
origin: date corresponding to the first row of data
nday: (optional) number of days since when to extract the data

Value

a matrix containing the requested rows

Note

It uses julian

Examples


extractdays()
#> [1] 10593