Given seed and targets, checks to make sure that at least one observation of each marginal category exists in the seed table. Otherwise, ipf/ipu would produce wrong answers without throwing errors.
check_tables(
primary_seed,
primary_targets,
secondary_seed = NULL,
secondary_targets = NULL,
primary_id
)In population synthesis or household survey expansion, this would be the household seed table (each record would represent a household). It could also be a trip table, where each row represents an origin-destination pair.
A named list of data frames. Each name in the
list defines a marginal dimension and must match a column from the
primary_seed table. The data frame associated with each named list
element can contain a geography field (starting with "geo_"). If so, each
row in the target table defines a new geography (these could be TAZs,
tracts, clusters, etc.). The other column names define the marginal
categories that targets are provided for. The vignette provides more
detail.
Most commonly, if the primary_seed describes
households, the secondary seed table would describe the persons in each
household. Must contain the same primary_id column that links each
person to their respective household in primary_seed.
Same format as primary_targets, but they constrain
the secondary_seed table.
The field used to join the primary and secondary seed
tables. Only necessary if secondary_seed is provided.
both seed tables and target lists