isd_parse_csv {isdparser}

Parse NOAA ISD/ISH csv data files

Description

Parse NOAA ISD/ISH csv data files

Usage

isd_parse_csv(path)

Arguments

path

(character) file path. required

Details

Note that the 'rem' (remarks) and 'eqd' columns are not parsed, just as with [isd_parse()].

Value

A tibble (data.frame)

Column information

- USAF MASTER and NCEI WBAN station identifiers are combined into an 11 character code with the column 'station' - Date and Time have been combined to the column 'date' - Call letter is synonymous with 'call_sign' column - WIND-OBSERVATION is abbreviated as column 'wnd' - SKY-CONDITION-OBSERVATION is abbreviated as column 'cig' - VISIBILITY-OBSERVATION is abbreviated as column 'vis' - AIR-TEMPERATURE-OBSERVATION air temperature is abbreviated as the column header 'tmp' - AIR-TEMPERATURE-OBSERVATION dew point is abbreviated as the column 'dew' - AIR-PRESSURE-OBSERVATION sea level pressure is abbreviated as the column 'slp'

References

https://www.ncei.noaa.gov/data/global-hourly/access/ https://www.ncei.noaa.gov/data/global-hourly/doc/CSV_HELP.pdf https://www.ncei.noaa.gov/data/global-hourly/doc/isd-format-document.pdf

Examples

path <- system.file('extdata/00702699999.csv', package = "isdparser")
(res <- isd_parse_csv(path))

# isd_parse_csv compared to isd_parse
if (interactive()) {
x="https://www.ncei.noaa.gov/data/global-hourly/access/2017/00702699999.csv"
download.file(x, (f_csv=file.path(tempdir(), "00702699999.csv")))
y="ftp://ftp.ncdc.noaa.gov/pub/data/noaa/2017/007026-99999-2017.gz"
download.file(y, (f_gz=file.path(tempdir(), "007026-99999-2017.gz")))
from_csv <- isd_parse_csv(f_csv)
from_gz <- isd_parse(f_gz, parallel = TRUE)

x="https://www.ncei.noaa.gov/data/global-hourly/access/1913/02982099999.csv"
download.file(x, (f=file.path(tempdir(), "02982099999.csv")))
isd_parse_csv(f)

x="https://www.ncei.noaa.gov/data/global-hourly/access/1923/02970099999.csv"
download.file(x, (f=file.path(tempdir(), "02970099999.csv")))
isd_parse_csv(f)

x="https://www.ncei.noaa.gov/data/global-hourly/access/1945/04390099999.csv"
download.file(x, (f=file.path(tempdir(), "04390099999.csv")))
isd_parse_csv(f)

x="https://www.ncei.noaa.gov/data/global-hourly/access/1976/02836099999.csv"
download.file(x, (f=file.path(tempdir(), "02836099999.csv")))
isd_parse_csv(f)
}