R Under development (unstable) (2024-07-05 r86875 ucrt) -- "Unsuffered Consequences"
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> require( zonohedra )
Loading required package: zonohedra
Package: zonohedra.  Author: Glenn Davis.  Version: 0.3-0.  Built: R 4.5.0; x86_64-w64-mingw32; 2024-07-07 02:06:25
 UTC; windows

Attaching package: 'zonohedra'

The following object is masked from 'package:base':

    rank

> options( width=144 )   
> 
> testSimplify <- function()
+     {
+     path = system.file( "extdata/xyz1931.5nm.txt", package='zonohedra' )
+     
+     df  = read.table( path, header=T, stringsAsFactors=F ) #; print( str(df) )
+     
+     ground  = df$wavelength
+     xyz5    = rbind( df$x, df$y, df$z )
+     colnames( xyz5 )    = ground
+     
+     M   = matroid( xyz5, ground=ground ) #;   print(M)
+     
+     hypersimple = simplify( M$hyperplane, M$ground )
+     
+     hyper   = unsimplify( hypersimple, M$loop, M$multiple )
+     
+     if( ! identical( M$hyperplane, hyper ) )    return(FALSE)
+     
+     
+     path    = system.file( "extdata/ciexyz31_1.csv", package='zonohedra' )
+     
+     df  = read.table( path, header=T, sep=',', stringsAsFactors=F ) #; print( str(df) )
+     
+     ground  = df$Wavelength
+     xyz1    = rbind( df$x, df$y, df$z )
+     colnames( xyz1 )    = ground
+     
+     M   = matroid( xyz1, e2=1.e-10, ground=ground ) #;   print(M)
+     
+     hypersimple = simplify( M$hyperplane, M$ground )
+     
+     hyper   = unsimplify( hypersimple, M$loop, M$multiple )
+     
+     if( ! identical( M$hyperplane, hyper ) )    return(FALSE)
+     
+     return(TRUE)
+     }
>     
>     
> if( ! testSimplify() )  stop( "testSimplify() failed !" )
>     
> cat( "Passed all matroid tests !\n", file=stderr() )    
Passed all matroid tests !
> 
> proc.time()
   user  system elapsed 
   1.04    0.14    1.15