readDWD.radar: read dwd gridded radolan radar data

In rdwd: Select and Download Climate Data from 'DWD' (German Weather Service)

read dwd gridded radolan radar data

Description

read gridded radolan radar data. Intended to be called via readDWD().

Usage

readDWD.radar(
  file,
  gargs = NULL,
  toraster = TRUE,
  dividebyten = TRUE,
  quiet = rdwdquiet(),
  ...
)

Arguments

file	Name of file on harddrive, like e.g. DWDdata/hourly/radolan/recent/bin/ raa01-rw_10000-1802020250-dwd—bin.gz
gargs	Named list of arguments passed to R.utils::gunzip(), see readDWD.raster(). DEFAULT: NULL
toraster	Logical: convert output (list of matrixes + meta informations) to a list with data (terra::rast) + meta (list from the first subfile, but with vector of dates)? DEFAULT: TRUE
dividebyten	Logical: Divide the numerical values by 10? See readDWD. toraster??? DEFAULT: TRUE
quiet	Ignored. DEFAULT: FALSE through rdwdquiet()
...	Further arguments passed to dwdradar::readRadarFile(), i.e. na and clutter

Value

Invisible list with dat (matrix or raster, depending on toraster) and meta (list with elements from header)

Author(s)

Berry Boessenkool, [e-mail], Aug 2019. Significant input for the underlying dwdradar::readRadarFile() came from Henning Rust & Christoph Ritschel at FU Berlin.

See Also

readDWD(), especially readDWD.binary()
https://wradlib.org for much more extensive radar analysis in Python
Kompositformatbeschreibung at https://www.dwd.de/DE/leistungen/radolan/radolan.html for format description

Examples

## Not run:  # Excluded from CRAN checks, but run in localtests
# recent radar files
rrf <- indexFTP("hourly/radolan/recent/bin", base=gridbase, dir=tempdir())
lrf <- dataDWD(rrf[773], base=gridbase, joinbf=TRUE, dir=tempdir(), read=FALSE)
r <- readDWD(lrf)
plotRadar(r$dat, main=paste("mm in 24 hours preceding", r$meta$date))

## End(Not run)

rdwd documentation built on July 9, 2023, 5:24 p.m.