precintcon (version 2.1)

ci: Concentration Index

Description

Calculates the Concentration Index (CI) on a daily precipitation serie.

Usage

ci(..., interval = 1)

Arguments

interval

the interval in millimeters applied for calculating the concentration index. (Default value: 1)

...

a set of daily precipitation series.

Value

• A data.frame containing the following variables:
  • datasetis the precipitation serie name.
  • ais the constant of the exponential curve defined via the least-squares method.
  • bis the constant of the exponential curve defined via the least-squares method.
  • r2is the determination of coefficient of determination (R2) of the exponential model.
  • Ais the area over the exponential curve.
  • Sis the are compressed for the exponential curve.
  • ciis the concentration index.
  • PP_5is the precipitation percentage determined by 5\% of the raining days.
  • PP_10is the precipitation percentage determined by 10\% of the raining days.
  • PP_15is the precipitation percentage determined by 15\% of the raining days.
  • PP_20is the precipitation percentage determined by 20\% of the raining days.
  • PP_25is the precipitation percentage determined by 25\% of the raining days.
  • PP_30is the precipitation percentage determined by 30\% of the raining days.
  • PP_50is the precipitation percentage determined by 50\% of the raining days.

See Also

pplot.lorenz read.data as.daily

Examples

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

##
# Performing the Concentration Index Analysis
ci(daily, interval = 1)