rskPatm {oce} | R Documentation |
Estimate atmospheric pressure in rsk record
rskPatm(x, dp=0.5)
x |
A |
dp |
Half-width of pressure window to be examined (in decibars). |
Pressures must be in decibars for this to work. First, a subset of
pressures is created, in which the range is sap-dp
to sap+dp
.
Here, sap
=10.1325 dbar is standard sealevel atmospheric pressure.
Within this window, three measures of central tendency are calculated: the
median, the mean, and a weighted mean that has weight given by exp(-2*((p - sap) / dp)^2).
A list of four estimates: sap
, the median, the mean, and the
weighted mean.
Dan Kelley
The documentation for rsk-class
explains the structure of
rsk
objects, and also outlines the other functions dealing with them.
library(oce) data(rsk) print(rskPatm(rsk))