get_quantiles: Calculate quantiles from a data table
In SeaVal: Validation of Seasonal Weather Forecasts

get_quantiles

R Documentation

Calculate quantiles from a data table

Description

The quantiles are saved in/returned as a list with the following elements:

dt - A data table with quantiles for each level of by (not the same as the input-dt).
quantiles - the vector of quantiles that were used.
group - a data table containing the levels the quantiles are grouped over, e.g. all years the quantiles are calculated over.
data_col_name - the name of data_col, see below, so that you know what the quantiles actually were computed from.
description - the description string, if provided.

Usage

get_quantiles(
  dt,
  data_col = setdiff(names(dt), dimvars(dt))[1],
  qqs = c(10, 20, 33, 67, 80, 90),
  by = setdiff(dimvars(dt), c("year", "member")),
  description = NULL,
  save_file = NULL
)

Arguments

`dt`	Data table containing the data.
`data_col`	The name of the column in dt containing the data for which the quantiles are derived. By default the first column that is not a dimension variable is selected.
`qqs`	Vector of quantiles. If one of them is larger 1 they are interpreted as percent. Default is the quantiles used in the verification maps.
`by`	Column names in dt. Levels by which the quantiles are calculated
`description`	Optional description string.
`save_file`	Optional name of save file.