Reads the raw bytes of a legacy-format dataPath zip member: PSPP's
spv_legacy_data_decode(), ported. Returns the per-"source" (variable
group) case data needed to reconstruct a pivot table once cross-referenced
against the sibling path XML member's dimension/category structure — see
.spv_decode_legacy_table().
Usage
.spv_decode_legacy_data(raw)
Arguments
- raw
raw vector: the exact bytes of the .bin zip member.
Value
a list of sources, each list(source_name, variables) where
variables is a list of list(var_name, values), values a list of
list(d, s) per case (numeric xor string; NA for the unused side).
NULL if the member cannot be decoded.
