spi.per.year: Standardized Precipitation Index

In lucasvenez/precintcon: Precipitation Intensity, Concentration and Anomaly Analysis

Description

Calculates the Standardized Precipitation Index (SPI) per year on a daily or monthly precipitation serie.

Usage

spi.per.year(object, period = 3, distribution = "Gamma", FUN = mean)

Arguments

object	a daily or monthly precipitation serie.
period	the number of months to be aggregate in the calculation of the standardized precipitation index. (Default value: 3)
distribution	(it has no effect yet).
FUN	the function used to summarize the standardized precipitation index per year. (Default function: mean).

Value

A data.frame (precintcon.spi.per.year) containing the following variables:

• year is the year.

• spi is the standardized precipitation index.

Author(s)

Lucas Venezian Povoa [e-mail]

See Also

spi read.data

Examples

##
# Loading the monthly precipitation serie.
data(monthly)

##
# Performing the Standardized Precipitation Index
spi.per.year(monthly, period = 3)

lucasvenez/precintcon documentation built on May 21, 2019, 8:53 a.m.