## ----setup, include = FALSE---------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

## -----------------------------------------------------------------------------
library("cdata")

d <- wrapr::build_frame(
   "Sepal.Length"  , "Sepal.Width", "Petal.Length", "Petal.Width", "Species" |
     5.1           , 3.5          , 1.4           , 0.2          , "setosa"  |
     4.9           , 3            , 1.4           , 0.2          , "setosa"  )
d$id <- seq_len(nrow(d))

knitr::kable(d)

## -----------------------------------------------------------------------------
expect <- wrapr::build_frame(
   "id"  , "Species", "Part" , "Measure", "Value" |
     1L  , "setosa" , "Sepal", "Length" , 5.1     |
     1L  , "setosa" , "Sepal", "Width"  , 3.5     |
     1L  , "setosa" , "Petal", "Length" , 1.4     |
     1L  , "setosa" , "Petal", "Width"  , 0.2     |
     2L  , "setosa" , "Sepal", "Length" , 4.9     |
     2L  , "setosa" , "Sepal", "Width"  , 3       |
     2L  , "setosa" , "Petal", "Length" , 1.4     |
     2L  , "setosa" , "Petal", "Width"  , 0.2     )

knitr::kable(expect)

## -----------------------------------------------------------------------------
control_table <- wrapr::qchar_frame(
   "Part"   , "Measure", "Value"      |
     "Sepal", "Length" , Sepal.Length |
     "Sepal", "Width"  , Sepal.Width  |
     "Petal", "Length" , Petal.Length |
     "Petal", "Width"  , Petal.Width  )

layout <- rowrecs_to_blocks_spec(
  control_table,
  controlTableKeys = c("Part", "Measure"),
  recordKeys = c("id", "Species"))

print(layout)

## -----------------------------------------------------------------------------
res <- d %.>% layout

knitr::kable(res)

## -----------------------------------------------------------------------------
inv_layout <- t(layout)

print(inv_layout)

back <- res %.>% inv_layout

knitr::kable(back)