Transform calendar year triangle to development year triangle

Transform calendar year triangle to development year triangle

Usage

cal_year2dev_year(cal_year_triangle)

Arguments

cal_year_triangle

quadratic matrix with origin years as rows and calendar years as columns

Value

quadratic matrix with origin years as rows and development years as columns

Examples

cal_year_triangle <- matrix(c(1000, 0, 0, 200, 800, 0, 100, 100, 900), 3)
rownames(cal_year_triangle) <- colnames(cal_year_triangle) <- 2012:2014
print(cal_year_triangle)
#>      2012 2013 2014
#> 2012 1000  200  100
#> 2013    0  800  100
#> 2014    0    0  900
cal_year2dev_year(cal_year_triangle)
#>         1   2   3
#> 2012 1000 200 100
#> 2013  800 100   0
#> 2014  900   0   0