Use transform spec to layout data.

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