WTdiff: World Average Winter Temperature Change (1963-1967 Vs 1993-1997)
Description
The WTdiff data frame has 1391 rows and 4 columns.
It contains the average temperature change from 1963-1967
to 1993-1997 for those stations having non-missing observations
on the winter (Dec-Feb) for ten years (1963-1967 and 1993-1997).
Usage
WTdiff
Arguments
Format
This data frame contains the following columns:
recid
a numeric vector containing the coded information of the
stations (length 11). The first three digits represent the
country code; the next five digits, the station number; the
last three digits, whether a station is a WMO staion or close
to one.
lon
a numeric vector containing the longitudes (in degrees) of
the stations.
lat
a numeric vector containing the latitudes (in degrees) of
the stations.
avgd
a numeric vector containing the average temperature change
from 1963-1967 to 1993-1997 for the stations.
## Fit a smoothing spherical spline with part of the datasubdat <- WTdiff[sample(nrow(WTdiff), 200), 2:4]
attach(subdat)
smooth.sspline(lon, lat, avgd)
detach(subdat)