Program g03ecfe
! G03ECF Example Program Text
! Mark 25 Release. NAG Copyright 2014.
! .. Use Statements ..
Use nag_library, Only: g03eaf, g03ecf, nag_wp
! .. Implicit None Statement ..
Implicit None
! .. Parameters ..
Integer, Parameter :: nin = 5, nout = 6, rnlen = 3
! .. Local Scalars ..
Integer :: i, ifail, ld, ldx, liwk, m, method, &
n, n1
Character (1) :: dist, scal, update
! .. Local Arrays ..
Real (Kind=nag_wp), Allocatable :: cd(:), d(:), dord(:), s(:), x(:,:)
Integer, Allocatable :: ilc(:), iord(:), isx(:), iuc(:), &
iwk(:)
Character (rnlen), Allocatable :: row_name(:)
! .. Executable Statements ..
Write (nout,*) 'G03ECF Example Program Results'
Write (nout,*)
! Skip heading in data file
Read (nin,*)
! Read in the problem size
Read (nin,*) n, m
! Read in information on the type of distance matrix to use
Read (nin,*) update, dist, scal
ldx = n
ld = n*(n-1)/2
n1 = n - 1
liwk = 2*n
Allocate (x(ldx,m),isx(m),s(m),d(ld),ilc(n1),iuc(n1),cd(n1),iord(n), &
dord(n),iwk(liwk),row_name(n))
! Read in the data used to construct distance matrix
Read (nin,*)(x(i,1:m),i=1,n)
! Read in variable inclusion flags
Read (nin,*) isx(1:m)
! Read in scaling
If (scal=='G' .Or. scal=='g') Then
Read (nin,*) s(1:m)
End If
! Compute the distance matrix
ifail = 0
Call g03eaf(update,dist,scal,n,m,x,ldx,isx,s,d,ifail)
! Read in information on the clustering method to use
Read (nin,*) method
! Read in first RNLEN characters of row names. Used to make example
! output easier to read
Read (nin,*) row_name(1:n)
! Perform clustering
ifail = 0
Call g03ecf(method,n,d,ilc,iuc,cd,iord,dord,iwk,ifail)
! Display results
Write (nout,*) ' Distance Clusters Joined'
Write (nout,*)
Write (nout,99999)(cd(i),row_name(ilc(i)),row_name(iuc(i)),i=1,n1)
99999 Format (F10.3,5X,2A)
End Program g03ecfe