Use transform spec to layout data.

Use transform spec to layout data.

# S3 method for rowrecs_to_blocks_spec
layout_by(transform, table)

Arguments

transform	object of class rowrecs_to_blocks_spec
table	data.frame or relop.

Value

re-arranged data or data reference (relop).

Examples

d <- wrapr::build_frame(
  "id"  , "AUC", "R2" |
    1   , 0.7  , 0.4  |
    2   , 0.8  , 0.5  )

transform <- rowrecs_to_blocks_spec(
  wrapr::qchar_frame(
    "measure", "value" |
    "AUC"    , AUC     |
    "R2"     , R2      ),
  recordKeys = "id")

print(transform)
#> {
#>  row_record <- wrapr::qchar_frame(
#>    "id"  , "AUC", "R2" |
#>      .   , AUC  , R2   )
#>  row_keys <- c('id')
#> 
#>  # becomes
#> 
#>  block_record <- wrapr::qchar_frame(
#>    "id"  , "measure", "value" |
#>      .   , "AUC"    , AUC     |
#>      .   , "R2"     , R2      )
#>  block_keys <- c('id', 'measure')
#> 
#>  # args: c(checkNames = TRUE, checkKeys = FALSE, strict = FALSE, allow_rqdatatable = FALSE)
#> }
#> 
layout_by(transform, d)
#>   id measure value
#> 1  1     AUC   0.7
#> 2  1      R2   0.4
#> 3  2     AUC   0.8
#> 4  2      R2   0.5