pRecipe (version 3.0.1-3)

yearstat: Yearly <stat>

Description

The function yearstat aggregates the data from monthly to yearly.

Usage

yearstat(x, stat = "sum")
# S4 method for Raster
yearstat(x, stat = "sum")
# S4 method for data.table
yearstat(x, stat = "sum")
# S4 method for character
yearstat(x, stat = "sum")

Value

Raster* object; data.table

Arguments

x

Raster* object; data.table (see details); filename (character, see details)

stat

character

Details

If `x` is a data.table, its columns should be named: "lon", "lat", "date", and "value"

If `x` is a filename, it should point to a *.nc file.

`stat` is a character string describing the desired aggregation function. Suitable options are:

• "max"

• "mean"

• "median"

• "min"

• "sum" (default)

Examples

if (FALSE) {
download_data("gldas-vic", path = tempdir())
r <- raster::brick(paste0(tempdir(),
"/gldas-vic_tp_mm_land_194801_201412_025_monthly.nc"))
s <- yearstat(r, "mean")
}