Parallel processing can be enabled using plan
to set
up a parallel backend of your choice, e.g.,
future::plan("multisession")
. See examples for more.
If multiple stations are given, data are summarised for each year by station,
which include vapour pressure and relative humidity elements calculated from
existing data in GSOD. Else, single stations are tidied and a data
frame is returned.
All missing values in resulting files are represented as NA
regardless
of which field they occur in.
Only station files in the original ".op.gz" file format are supported by this
function. If you have downloaded the full annual "gsod_YYYY.tar" file you
will need to extract the individual station files from the tar file first to
use this function.
For a complete list of the fields and description of the contents and units,
please refer to Appendix 1 in the GSODR vignette,
vignette("GSODR", package = "GSODR")
.