copy_policy_data {polle}

Copy Policy Data Object

Description

Objects of class policy_data contains elements of class data.table. data.table provide functions that operate on objects by reference. Thus, the policy_data object is not copied when modified by reference, see examples. An explicit copy can be made by copy_policy_data. The function is a wrapper of data.table::copy().

Usage

copy_policy_data(object)

Arguments

object

Object of class policy_data.

Value

Object of class policy_data.

Examples

library("polle")
### Single stage case: Wide data
d1 <- sim_single_stage(5e2, seed=1)
head(d1, 5)
# constructing policy_data object:
pd1 <- policy_data(d1,
                   action="A",
                   covariates=c("Z", "B", "L"),
                   utility="U")
pd1

# True copy
pd2 <- copy_policy_data(pd1)
# manipulating the data.table by reference:
pd2$baseline_data[, id := id + 1]
head(pd2$baseline_data$id - pd1$baseline_data$id)

# False copy
pd2 <- pd1
# manipulating the data.table by reference:
pd2$baseline_data[, id := id + 1]
head(pd2$baseline_data$id - pd1$baseline_data$id)