Extract value at age from vpadata

Extract value at age from vpadata

extract_x(vpadata, x, year, mean_by = NULL)

Arguments

vpadata

Object return from vpa

x

Character one of 'f', 'c', 'w', 'n', 's' or 'wc'

mean_by

If non-null, return mean value:

"age"

Return values averaged by age

"year"

Return values averaged by year