index.spell.prcXXth: Spell length percentiles

In SantanderMetGroup/R_VALUE: Climate data validation in the framework of the COST action VALUE

Spell length percentiles

Description

Computes a user-defined percentile for the duration of spells (above/below) a given threshold.

Usage

index.spell.prcXXth(ts, dates, threshold = 1, threshold.type = "abs",
  condition = c("GT", "GE", "LT", "LE"), prob = 0.5)

Arguments

ts	A vector containing the data
dates	A character (or POSIXct) vector following the format “YYYY-MM-DD” (i.e., format = "%Y-%m-%d" as in strptime). This is directly passed by the VALUE objects (either stations or predictions) through the element object$Dates$start.
threshold	A float number defining the absolute threshold considered. Default to 1
threshold.type	Is the value of threshold an absolute value or a quantile [0-1]?. Two possible values: "abs" and "prob" respectively. Default to "abs".
condition	Inequality operator to be applied considering the given threshold. "GT" = greater than the value of threshold, "GE" = greater or equal, "LT" = lower than, "LE" = lower or equal than
prob	A float number in the range [0,1] defining the probability of the quantile to be calculated. Default to median (prob = 0.5).

Details

The function requires the date information in order to ensure that spells are computed on consecutive records.

Value

A float number with the corresponding percentile.

Author(s)

N. Neykov, S. Herrera, J. Bedia

SantanderMetGroup/R_VALUE documentation built on July 4, 2023, 4:27 a.m.