A helper function to switch from original time periods to
"new" time periods (which are just time periods going from 1 to total
number of available periods). This allows for periods not being
exactly spaced apart by 1.
Usage
orig2t(orig, original_time.periods)
Arguments
- orig
a vector of original time periods to convert to new time periods.
- original_time.periods
vector containing all original time periods.
Value
new time period converted from original time period
Examples
original_time.periods <- c(2001, 2003, 2005, 2007)
orig2t(c(2001, 2005), original_time.periods) ## returns c(1, 3)
#> [1] 1 3
