Season {s2dv}

Compute seasonal mean or other calculations

Description

Compute the seasonal mean (or other methods) on monthly time series along one dimension of a named multi-dimensional arrays. Partial season is not accounted.

Usage

Season(
  data,
  time_dim = "ftime",
  monini,
  moninf,
  monsup,
  method = mean,
  na.rm = TRUE,
  ncores = NULL
)

Arguments

data

A named numeric array with at least one dimension 'time_dim'.

time_dim

A character string indicating the name of dimension along which the seasonal mean or other calculations are computed. The default value is 'ftime'.

monini

An integer indicating what the first month of the time series is. It can be from 1 to 12.

moninf

An integer indicating the starting month of the seasonal calculation. It can be from 1 to 12.

monsup

An integer indicating the end month of the seasonal calculation. It can be from 1 to 12.

method

An R function to be applied for seasonal calculation. For example, 'sum' can be used for total precipitation. The default value is mean.

na.rm

A logical value indicating whether to remove NA values along 'time_dim' when calculating climatology (TRUE) or return NA if there is NA along 'time_dim' (FALSE). The default value is TRUE.

ncores

An integer indicating the number of cores to use for parallel computation. The default value is NULL.

Value

An array with the same dimensions as data except along the 'time_dim' dimension, of which the length changes to the number of seasons.

Examples

set.seed(1)
dat1 <- array(rnorm(144 * 3), dim = c(member = 2, sdate = 2, ftime = 12*3, lon = 3))
res <- Season(data = dat1, monini = 1, moninf = 1, monsup = 2)
res <- Season(data = dat1, monini = 10, moninf = 12, monsup = 2)
dat2 <- dat1
set.seed(2)
na <- floor(runif(30, min = 1, max = 144 * 3))
dat2[na] <- NA
res <- Season(data = dat2, monini = 3, moninf = 1, monsup = 2)
res <- Season(data = dat2, monini = 3, moninf = 1, monsup = 2, na.rm = FALSE)