Monthly Total Precipitation (mm) for April 1948 in the Contiguous United States
USprecip.Rd
This is a useful spatial data set of moderate to large size consisting of 11918 locations. See https://www.image.ucar.edu/GSP/Data/US.monthly.met/ for the source of these data.
Format
This data set is an array containing the following columns:
- lon,lat
Longitude-latitude position of monitoring stations.
- raw
Monthly total precipitation in millimeters for April 1948.
- anomaly
Preipitation anomaly for April 1948.
- infill
Indicator, which station values were observed (5906 out of the 11918) compared to which were estimated.
References
Johns, C., Nychka, D., Kittel, T., and Daly, C. (2003) Infilling sparse records of spatial fields. Journal of the American Statistical Association, 98, 796–806.
Examples
# plot
if (FALSE) { # \dontrun{
library(fields)
data(USprecip)
par(mfcol=c(2,1))
quilt.plot(USprecip[,1:2],USprecip[,3])
US( add=TRUE, col=2, lty=2)
quilt.plot(USprecip[,1:2],USprecip[,4])
US( add=TRUE, col=2, lty=2)
} # }