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Calculate moving trend coefficients

Source: R/moving_trend.R
moving_trend.Rd

Calculate moving trend coefficients

Usage

moving_trend(n_year, duration, first_year = 0)

Arguments

n_year

Number of available years in the data.

duration

Number of years in the moving window. If the number of available years is less than this value, the trend will be calculated for the available years.

first_year

First year of the data. Only used to name the rows.

Value

A matrix with the moving trend coefficients. One row for each window and and one column for each year in the data. The format of the row names is trend_{window mid point}_{window length}. trend_2001.5_4 is the trend for the years 2000 to 2003.

Examples

moving_trend(5, 3)
#>             [,1] [,2] [,3] [,4] [,5]
#> trend_1.0_3 -0.5  0.0  0.5  0.0  0.0
#> trend_2.0_3  0.0 -0.5  0.0  0.5  0.0
#> trend_3.0_3  0.0  0.0 -0.5  0.0  0.5
moving_trend(5, 4, 2000)
#>                [,1] [,2] [,3] [,4] [,5]
#> trend_2001.5_4 -0.3 -0.1  0.1  0.3  0.0
#> trend_2002.5_4  0.0 -0.3 -0.1  0.1  0.3