NAG Library Manual, Mark 27.2
```    Program g03dcfe

!     G03DCF Example Program Text

!     Mark 27.2 Release. NAG Copyright 2021.

!     .. Use Statements ..
Use nag_library, Only: g03daf, g03dcf, nag_wp
!     .. Implicit None Statement ..
Implicit None
!     .. Parameters ..
Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
Real (Kind=nag_wp)               :: df, sig, stat
Integer                          :: i, ifail, ldgmn, ldox, ldp, ldx,     &
lgc, lwk, lwt, m, n, ng, nobs, nvar, &
tdati
Logical                          :: atiq
Character (1)                    :: equal, priors, typ, weight
Character (80)                   :: fmt
!     .. Local Arrays ..
Real (Kind=nag_wp), Allocatable  :: ati(:,:), det(:), gc(:), gmn(:,:),   &
ox(:,:), p(:,:), prior(:), wk(:),    &
wt(:), x(:,:)
Integer, Allocatable             :: iag(:), ing(:), isx(:), iwk(:),      &
nig(:)
!     .. Intrinsic Procedures ..
Intrinsic                        :: count, max
!     .. Executable Statements ..
Write (nout,*) 'G03DCF Example Program Results'
Write (nout,*)

!     Skip headings in data file

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

If (weight=='W' .Or. weight=='w') Then
lwt = n
Else
lwt = 0
End If
ldox = n
Allocate (ox(ldox,m),ing(n),wt(lwt),isx(m))

If (lwt>0) Then
Else
End If

!     Read in variable inclusion flags

!     Calculate NVAR
nvar = count(isx(1:m)==1)

lwk = max(n*(nvar+1),2*nvar)
ldgmn = ng
lgc = (ng+1)*nvar*(nvar+1)/2
Allocate (nig(ng),gmn(ldgmn,nvar),det(ng),gc(lgc),wk(lwk),iwk(ng))

!     Compute covariance matrix
ifail = 0
Call g03daf(weight,n,m,ox,ldox,isx,nvar,ing,ng,wt,nig,gmn,ldgmn,det,gc,  &
stat,df,sig,wk,iwk,ifail)

!     Read in parameters controlling grouping
Read (nin,*) typ, equal, priors, nobs, atiq

If (atiq) Then
tdati = ng
Else
tdati = 1
End If
ldx = nobs
ldp = nobs
Allocate (x(ldx,m),prior(ng),p(ldp,ng),iag(nobs),ati(ldp,tdati))

!     Read in data to group

If (priors=='I' .Or. priors=='i') Then
End If

!     Allocate observations to groups
ifail = 0
Call g03dcf(typ,equal,priors,nvar,ng,nig,gmn,ldgmn,gc,det,nobs,m,isx,x,  &
ldx,prior,p,ldp,iag,atiq,ati,wk,ifail)

!     Display results
If (atiq) Then
Write (fmt,99999) '(2(I6,5X,', ng, 'F6.3))'
Write (nout,*) '   Obs       Posterior        Allocated',              &
'     Atypicality'
Write (nout,*) '             probabilities    to group      index'
Write (nout,*)
Write (nout,fmt)(i,p(i,1:ng),iag(i),ati(i,1:ng),i=1,nobs)
Else
Write (fmt,99999) '(I6,5X,', ng, 'F6.3,I6))'
Write (nout,*) '   Obs       Posterior        Allocated'
Write (nout,*) '             probabilities    to group '
Write (nout,*)
Write (nout,fmt)(i,p(i,1:ng),iag(i),i=1,nobs)
End If

99999 Format (A,I0,A)
End Program g03dcfe
```