importFrom("zoo", is.zoo, as.Date, as.zoo, zoo, coredata, as.yearmon, rollapply)
importFrom("xts", is.xts, as.xts, to.period, axTicksByTime, apply.daily, periodicity, xts, .index)
#importFrom("zoo", aggregate) # aggregate is not exported from zoo
importFrom("e1071", skewness, kurtosis)
#importFrom("maptools", readShapePoly)
importFrom("gstat", krige, idw)
importFrom("automap", autoKrige)
importFrom("sp", proj4string, coordinates, spplot)
exportPattern("^[^\\.]")

S3method(monthlyfunction, zoo)
S3method(annualfunction, zoo)
S3method(seasonalfunction, zoo)
S3method(dm2seasonal, zoo)
S3method(daily2monthly, zoo)
S3method(daily2annual, zoo)
S3method(dwi, zoo)
S3method(extract, zoo)
S3method(smry, zoo)
S3method(fdc, zoo)
S3method(subdaily2daily, zoo)


