Program g02cffe

!     G02CFF Example Program Text

!     Mark 30.1 Release. NAG Copyright 2024.

!     .. Use Statements ..
      Use nag_library, Only: g02cff, nag_wp, x04caf
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Integer                          :: i, ifail, ldr, ldssp, n
      Character (80)                   :: fmt
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: r(:,:), ssp(:,:), std(:), xbar(:)
      Integer, Allocatable             :: korder(:), kwork(:)
!     .. Executable Statements ..
      Write (nout,*) 'G02CFF Example Program Results'
      Write (nout,*)

!     Skip heading in data file
      Read (nin,*)

!     Read in the problem size
      Read (nin,*) n

      ldr = n
      ldssp = n
      Allocate (r(ldr,n),ssp(ldssp,n),std(n),xbar(n),korder(n),kwork(n))

!     Read in data
      Read (nin,*) xbar(1:n)
      Read (nin,*) std(1:n)
      Read (nin,*)(ssp(i,1:n),i=1,n)
      Read (nin,*)(r(i,1:n),i=1,n)

!     Read in the reordering vector
      Read (nin,*) korder(1:n)

!     Format for displaying vectors
      Write (fmt,99999) '(1x,A,', n, '(1X,F10.4))'

!     Display data
      Write (nout,fmt) 'Original vector XBAR :   ', xbar(1:n)
      Write (nout,*)
      Write (nout,fmt) 'Original vector STD  :   ', std(1:n)
      Write (nout,*)
      Flush (nout)
      ifail = 0
      Call x04caf('General',' ',n,n,ssp,ldssp,'Original matrix SSP  :',ifail)
      Write (nout,*)
      Flush (nout)
      ifail = 0
      Call x04caf('General',' ',n,n,r,ldr,'Original matrix R    :',ifail)
      Write (nout,*)

!     Reorder the results
      ifail = 0
      Call g02cff(n,korder,xbar,std,ssp,ldssp,r,ldr,kwork,ifail)

!     Display results
      Write (nout,fmt) 'New vector XBAR :   ', xbar(1:n)
      Write (nout,*)
      Write (nout,fmt) 'New vector STD  :   ', std(1:n)
      Write (nout,*)
      Flush (nout)
      ifail = 0
      Call x04caf('General',' ',n,n,ssp,ldssp,'New matrix SSP  :',ifail)
      Write (nout,*)
      Flush (nout)
      ifail = 0
      Call x04caf('General',' ',n,n,r,ldr,'New matrix R    :',ifail)

99999 Format (A,I0,A)
    End Program g02cffe