Class param
for a parameter of a scan of a polar volume, and its
associated R base functions.
# S3 method for param summary(object, ...) is.param(x)
object | Object of class |
---|---|
... | Additional arguments affecting the summary produced. |
x | Object of class |
for is.scan
: TRUE
if its argument is of
class "param
"
An object of class scan
is a simple matrix, with the following
specific attributes:
radar
character string with the radar identifier
datetime
nominal time of the volume to which this scan belongs (UTC)
lat
latitude of the radar (decimal degrees)
lon
longitude of the radar (decimal degrees)
height
height of the radar antenna (meters above sea level)
get_elevation_angles
radar beam elevation (degrees)
param
string with the name of the polar scan parameter
Scan parameters are named according to the OPERA data information model (ODIM), see Table 16 in the ODIM specification. Commonly available parameters are:
DBZH
", "DBZ
"(Logged) reflectivity factor (dBZ)
VRADH
", "VRAD
"Radial velocity (m/s). Radial velocities towards the radar are negative, while radial velocities away from the radar are positive
RHOHV
"Correlation coefficient (unitless). Correlation between vertically polarized and horizontally polarized reflectivity factor
PHIDP
"Differential phase (degrees)
ZDR
"(Logged) differential reflectivity (dB)
# load example scan object data(example_scan) # extract the DBZH scan parameter: param <- get_param(example_scan, "DBZH") # verify this is an object of class param: is.param(param)#> [1] TRUE# print summary info for this scan parameter: param#> Polar scan parameter (class param) #> #> quantity: DBZH #> dims: 480 bins x 360 rays