Program g02lcfe

!     G02LCF Example Program Text

!     Mark 27.3 Release. NAG Copyright 2021.

!     .. Use Statements ..
      Use nag_library, Only: g02lcf, nag_wp, x04caf
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Real (Kind=nag_wp)               :: rcond
      Integer                          :: i, ifail, ip, iscale, ldb, ldc,      &
                                          ldob, ldp, ldvip, ldw, ldycv,        &
                                          maxfac, my, nfact, orig, vipopt
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: b(:,:), c(:,:), ob(:,:), p(:,:),     &
                                          vip(:,:), w(:,:), xbar(:), xstd(:),  &
                                          ybar(:), ycv(:,:), ystd(:)
!     .. Executable Statements ..
      Write (nout,*) 'G02LCF Example Program Results'
      Write (nout,*)
      Flush (nout)

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

!     Read problem size
      Read (nin,*) ip, my, maxfac, nfact, orig, iscale, vipopt

      ldp = ip
      ldc = my
      ldw = ip
      ldb = ip
      If (orig==1) Then
        ldob = ip + 1
      Else
        ldob = 1
      End If
      If (vipopt/=0) Then
        ldycv = nfact
        ldvip = ip
      Else
        ldycv = 0
        ldvip = 0
      End If
      Allocate (p(ldp,maxfac),c(ldc,maxfac),w(ldw,maxfac),b(ldb,my),xbar(ip),  &
        ybar(my),xstd(ip),ystd(my),ob(ldob,my),ycv(ldycv,my),                  &
        vip(ldvip,vipopt))

!     Read in data
      Read (nin,*)(p(i,1:maxfac),i=1,ip)
      Read (nin,*)(c(i,1:maxfac),i=1,my)
      Read (nin,*)(w(i,1:maxfac),i=1,ip)
      If (vipopt/=0) Then
        Read (nin,*)(ycv(i,1:my),i=1,nfact)
      End If

!     Read means and scalings
      If (orig==1) Then
        Read (nin,*) xbar(1:ip)
        Read (nin,*) ybar(1:my)
        If (iscale/=-1) Then
          Read (nin,*) xstd(1:ip)
          Read (nin,*) ystd(1:my)
        End If
      End If

!     Calculate predictions
      rcond = -1.0E0_nag_wp
      ifail = 0
      Call g02lcf(ip,my,maxfac,nfact,p,ldp,c,ldc,w,ldw,rcond,b,ldb,orig,xbar,  &
        ybar,iscale,xstd,ystd,ob,ldob,vipopt,ycv,ldycv,vip,ldvip,ifail)

!     Display results
      ifail = 0
      Call x04caf('General',' ',ip,my,b,ldb,'B',ifail)
      If (orig==1) Then
        Write (nout,*)
        Flush (nout)
        ifail = 0
        Call x04caf('General',' ',ip+1,my,ob,ldob,'OB',ifail)
      End If
      If (vipopt/=0) Then
        Write (nout,*)
        Flush (nout)
        ifail = 0
        Call x04caf('General',' ',ip,vipopt,vip,ldvip,'VIP',ifail)
      End If

    End Program g02lcfe