Build an ensemble from a reporting triangle WITHOUT nowcasting (passthrough)

Collapse the triangle to the observed (reported-so-far) totals per reference week and wrap them as a degenerate single-draw ensemble. An indicator that should NOT be nowcast-completed (because reporting is effectively complete, or the analyst has chosen not to model the delay) then flows through the SAME rate/trend/MEM/collapse pipeline with its observed values unchanged. It emits the same `<measure>_nowcasted` columns as the modelling engines – here equal to the observed value – so all downstream code is identical; the single draw makes every collapsed quantile equal the observed point.

Usage

nowcast_passthrough_to_ensemble_v1(x, max_delay, denominator_col = NULL)

Arguments

x

A `csfmt_reporting_triangle_v3`.

max_delay

Delay horizon (defines the contiguous reference grid).

denominator_col

Optional denominator column, carried through the same way (its observed total is also surfaced as `<denom>_observed`).

Value

A `csfmt_ensemble_v3` with single-column draw matrices.