pd_get_name() extracts a long, human readable name from the prism
data.
pd_get_date() extracts the date from the prism data.
Date is returned in yyyy-mm-dd format. For monthly data, dd is 01 and
for annual data mm is also 01. For normals, an empty character is returned.
pd_get_type() parses the variable from the prism data.
prism_md() is a deprecated function that has been replaced with
pd_get_name() and pd_get_date()
pd_to_file() converts prism data to a fully specified .bil file, i.e., the
full path to the file in the prism archive. A warning is posted if the
file does not exist in the local prism archive.
Usage
pd_get_name(pd)
pd_get_date(pd)
pd_get_type(pd)
prism_md(f, returnDate = FALSE)
pd_to_file(pd)Arguments
- pd
prism data character vector.
- f
1 or more prism directories name or .bil files.
- returnDate
TRUE or FALSE. If TRUE, an ISO date is returned. By default years will come back with YYYY-01-01 and months as YYYY-MM-01
Value
pd_get_name() and pd_get_date() return a character vector of
names/dates.
pd_get_type() returns a character vector of prism variable types,
e.g., 'ppt'.
pd_to_file() returns a character vector with the full path to the
bil file.
Details
"prism data", i.e., pd are the folder names returned by
prism_archive_ls() or prism_archive_subset(). These functions get the
name or date from these data, or convert these data to a file name.
Examples
if (FALSE) {
# Assumes 2000-2002 annual precipitation data is already downloaded
pd <- prism_archive_subset('ppt', 'annual', years = 2000:2002)
pd_get_name(pd)
## [1] "2000 - 4km resolution - Precipitation" "2001 - 4km resolution - Precipitation"
## [3] "2002 - 4km resolution - Precipitation"
pd_get_date(pd)
## [1] "2000-01-01" "2001-01-01" "2002-01-01"
pd_get_type(pd)
## [1] "ppt" "ppt" "ppt"
pd_to_file(pd[1])
## [1] "C:/prismdir/PRISM_ppt_stable_4kmM3_2000_bil/PRISM_ppt_stable_4kmM3_2000_bil.bil""
}