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Get metadata for a specific output cell

Source: R/metadata.R
tplyr_meta_result.Rd

Returns a tplyr_meta object containing the filter expressions that describe the source data for the specified cell.

Usage

tplyr_meta_result(result, row_id, column)

Arguments

result

A data.frame from tplyr_build() built with metadata = TRUE

row_id

Character row ID (from result$row_id or generate_row_ids())

column

Character column name (e.g., "res1")

Value

A tplyr_meta object, or NULL if no metadata for that cell

See also

tplyr_meta_subset() to fetch the source rows themselves.

Examples

spec <- tplyr_spec(
  cols = "TRT01P",
  layers = tplyr_layers(group_count("AGEGR1"))
)
built <- tplyr_build(spec, tplyr_adsl, metadata = TRUE)
built[, c("row_id", "rowlabel1", "res1")]
#>    row_id rowlabel1       res1
#> 1   1_<65       <65 14 (16.3%)
#> 2 1_65-80     65-80 42 (48.8%)
#> 3   1_>80       >80 30 (34.9%)

# The filters behind the Placebo / 65-80 cell
tplyr_meta_result(built, built$row_id[1], "res1")
#> tplyr_meta [layer 1]
#>   Names: TRT01P, AGEGR1
#>   Filters:
#>     TRT01P == "Placebo"
#>     AGEGR1 == "<65"