R base functions for inspecting a polar volume (pvol) object.

# S3 method for pvol
summary(object, ...)

is.pvol(x)

# S3 method for pvol
dim(x)

Arguments

object

A pvol object.

...

Additional arguments affecting the summary produced.

x

A pvol object.

Value

For is.pvol(): TRUE for an object of class pvol, otherwise FALSE.

For dim.pvol(): number of scans (scan) in a polar volume (pvol).

Details

A polar volume consists of a number of scans (or sweeps) made by the radar at different elevation angles. A polar volume (pvol) object is a list containing:

  • radar: Radar identifier.

  • datetime: Nominal time of the volume in UTC.

  • scans: List of scans (scan) at different elevation angles.

  • attributes: List of the volume's what, where and how attributes.

  • geo: List of the volume's geographic properties:

    • lat: Latitude of the radar in decimal degrees.

    • lon: Longitude of the radar in decimal degrees.

    • height: Height of the radar antenna in meters above sea level.

See also

Examples

# Locate and read the polar volume example file pvolfile <- system.file("extdata", "volume.h5", package = "bioRad") pvol <- read_pvolfile(pvolfile) # Verify that it is an object of class pvol is.pvol(pvol)
#> [1] TRUE
# Get summary info pvol # Same as summary(pvol) or print(pvol)
#> Polar volume (class pvol) #> #> # scans: 3 #> radar: SE50 #> source: WMO:02606,RAD:SE50,PLC:Angelholm,NOD:seang,ORG:82,CTY:643,CMT:Swedish radar #> nominal time: 2015-10-18 18:00:00 #>
# Get dimensions dim(pvol)
#> [1] 3
# Get summary info for the scans in the polar volume pvol$scans
#> [[1]] #> Polar scan (class scan) #> #> parameters: DBZH VRADH RHOHV ZDR PHIDP #> elevation angle: 0.5 deg #> dims: 480 bins x 360 rays #> #> [[2]] #> Polar scan (class scan) #> #> parameters: DBZH VRADH RHOHV ZDR PHIDP #> elevation angle: 1.5 deg #> dims: 480 bins x 360 rays #> #> [[3]] #> Polar scan (class scan) #> #> parameters: DBZH VRADH RHOHV ZDR PHIDP #> elevation angle: 2.5 deg #> dims: 480 bins x 360 rays #>