R Under development (unstable) (2023-12-13 r85679 ucrt) -- "Unsuffered Consequences"
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> 
>  library(rcdd)
If you want correct answers, use rational arithmetic.
See the Warnings sections in help pages for
    functions that do computational geometry.
> 
>  qux <- matrix(0, 0, 6)
> 
>  out <- scdd(qux, representation = "H")
>  print(out)
$output
     [,1] [,2] [,3] [,4] [,5] [,6]
[1,]    1    0    1    0    0    0
[2,]    1    0    0    1    0    0
[3,]    1    0    0    0    1    0
[4,]    1    0    0    0    0    1
attr(,"representation")
[1] "V"

> 
>  scdd(out$output)
$output
     [,1] [,2] [,3] [,4] [,5] [,6]
attr(,"representation")
[1] "H"

> 
>  out <- scdd(qux, representation = "H", adjacency = TRUE,
+      inputadjacency = TRUE, incidence = TRUE, inputincidence = TRUE)
>  print(out)
$output
     [,1] [,2] [,3] [,4] [,5] [,6]
[1,]    1    0    1    0    0    0
[2,]    1    0    0    1    0    0
[3,]    1    0    0    0    1    0
[4,]    1    0    0    0    0    1
attr(,"representation")
[1] "V"

$adjacency
list()

$inputadjacency
list()

$incidence
$incidence[[1]]
integer(0)

$incidence[[2]]
integer(0)

$incidence[[3]]
integer(0)

$incidence[[4]]
integer(0)


$inputincidence
list()

$input
     [,1] [,2] [,3] [,4] [,5] [,6]

> 
>  options(error=dump.frames)
> 
>  out <- scdd(qux, representation = "V")
Error in scdd(qux, representation = "V") : 
  no rows in 'm', not allowed for V-representation
> 
> 
> proc.time()
   user  system elapsed 
   0.12    0.04    0.15