Check two of mx, ax, qx

Helper function to check a data.table for two of mx, ax, and qx and compute the missing parameter if one is missing.

check_mx_ax_qx(dt)

Arguments

dt

[data.table()]
Data to check for mx, ax, and/or qx. Must also have 'age_length' column.

Value

dt with input columns plus any of 'mx', 'ax', and 'qx' that is missing in input. Or, returns error if input has fewer than two of these parameters.

Details

Uses mx_ax_to_qx(), qx_ax_to_mx(), or mx_qx_to_ax() function to complete the set of three life table parameters.

Examples

dt <- data.table::data.table(
  age_start = c(0, 1, 5, 10),
  age_length = c(1, 4, 5, 5),
  mx = c(0.009, 0.0004, 0.00015, 0.00019),
  ax = c(0.068, 1.626, 2.5, 2.5)
)
dt <- check_mx_ax_qx(dt)