ClimInd (version 0.1-2)

bio15: Precipitation coefficient of variation

Description

The coefficient of variation is a measure of the variation in monthly precipitation totals over the course of the year. This index is the ratio of the standard deviation of the monthly total precipitation to the mean monthly total precipitation and is expressed as a percentage.

Usage

bio15(data, data_names = NULL, na.rm = FALSE, ...)

Arguments

data

precipitation

data_names

names of each period of time

na.rm

logical. Should missing values (including NaN) be removed?

...

...

Value

BIO15

References

Hijmans RJ, Cameron SE, Parra JL, Jones PG, Jarvis A (2005) Very high resolution interpolated climate surfaces for global land areas. Int J Climatol 25:1965<U+2013>1978. doi: 10.1002/joc.1276. http://www.worldclim.org/bioclim This is a measure of the variation in monthly precipitation totals over the course of the year. This index is the ratio of the standard deviation of the monthly total precipitation to the mean monthly total precipitation (also known as the coefficient of variation) and is expressed as a percentage.

Examples

# NOT RUN {
data(data_all)
bio15(data = data_all$rr)
# }