helpers_dca_rdca: Internal Helper Functions for 'dca0()', 'dca()', and 'rdca()'

In stratallo: Optimum Sample Allocation in Stratified Sampling

Internal Helper Functions for dca0(), dca(), and rdca()

Description

Internal utility functions used by dca0(), dca(), and rdca() that perform operations on sets of domain–strata indices and manage the mapping between strata and domains.

Usage

H_cnt2dind(H_counts)

H_cnt2glbidx(H_counts)

H_get_strata_indices(H_counts, d)

Arguments

H_counts	(integerish) strata counts in each domain.
d	(integerish(1)) domain index. Must satisfy ⁠0 < d <= length(H_counts)⁠.

Functions

• H_cnt2dind(): Creates a vector of domain indicators from a vector of strata counts per domain; each element of the vector is the index of the domain to which the corresponding stratum belongs.

• H_cnt2glbidx(): Creates unique indices for strata across multiple domains. Returns a list of integer vectors, where the d-th element contains the unique indices of the strata in domain d.

• H_get_strata_indices(): Get the globally unique indices of strata belonging to a specific domain.

Note

These functions are internal and should typically not be called directly by users.

Examples

H_counts <- c(2, 2, 3) # three domains with 2, 2, and 3 strata respectively

# internal functions (not exported) – examples skipped
## Not run: 
H_cnt2dind(H_counts) # 1 1 2 2 3 3 3

## End(Not run)

# internal functions (not exported) – examples skipped
## Not run: 
H_cnt2glbidx(H_counts)

## End(Not run)

# internal functions (not exported) – examples skipped
## Not run: 
H_get_strata_indices(H_counts, 3) # 5 6 7

## End(Not run)

stratallo documentation built on March 12, 2026, 5:06 p.m.