msdDates {msdrought}

Finding indices for Dates Relevant to the MSD Calculations

Description

This function pulls the indices associated with the dates that correspond with the Mid Summer Drought, as well as the indices that indicate first and last day of each year. This function is used in conjunction with the MSD function.

Usage

msdDates(x, peakwindow1, minwindow1, minwindow2, peakwindow2)

Arguments

x

Date vector

peakwindow1

desired date in MMDD format to begin search for early peak

minwindow1

desired date in MMDD format to begin search for minimum

minwindow2

desired date in MMDD format to end search for minimum

peakwindow2

desired date in MMDD format to end search for late peak

Value

Vector containing the indices corresponding to each year's beginning date, end date, and the critical MSD dates

Examples

x <- seq(from = as.Date("1981-01-01"), to = as.Date("1985-12-31"), by = "day")
output <- msdDates(x, peakwindow1 = "05-01", minwindow1 = "06-01",
                    minwindow2 = "08-31", peakwindow2 = "10-31")