# countByYear: Allocate a total by year In Ecfun: Functions for Ecdat

## Description

Allocate `total` to `countByYear` for a constant count per day between `start` and `end`.

## Usage

 `1` ```countByYear(start, end, total=1) ```

## Arguments

 `start, end` objects of class "Date" specifying the start, end, respectively, of the event `total` A number to be allocated by year in proportion to the number of days in the event each year.

## Value

a numeric vector whose `sum` is `total` with names for all the years between `start` and `end`

Spencer Graves

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43``` ```## ## 1. All in one year ## start73 <- as.Date('1973-01-22') tst1 <- countByYear(start73, start73+99, 123) # check tst1. <- 123 names(tst1.) <- 1973 all.equal(tst1, tst1.) ## ## 2. Two years ## tst2 <- countByYear(start73, start73+365, 123) # check dur <- 366 days1 <- (365-21) days2 <- 22 tst2. <- 123 * c(days1, days2)/dur names(tst2.) <- 1973:1974 all.equal(tst2, tst2.) ## ## 3. Ten years ## tst10 <- countByYear(start73, start73+10*365.2, 123) # check days <- (c(rep(c(rep(365, 3), 366), length=10), 0) + c(-21, rep(0, 9), 22) ) tst10. <- 123 * days/(10*365.2+1) names(tst10.) <- 1973:1983 all.equal(tst10, tst10.) ```

Ecfun documentation built on April 6, 2018, 3:10 p.m.