Program g03fafe ! G03FAF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: g03faf, nag_wp, x04caf ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Integer :: ifail, ld, ldx, liwk, lwk, n, ndim Character (1) :: roots ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: d(:), eval(:), wk(:), x(:,:) Integer, Allocatable :: iwk(:) ! .. Executable Statements .. Write (nout,*) 'G03FAF Example Program Results' Write (nout,*) ! Skip heading in data file Read (nin,*) ! Read in the problem size Read (nin,*) n, ndim, roots ld = n*(n-1)/2 ldx = n lwk = n*(n+17)/2 - 1 liwk = 5*n Allocate (d(ld),x(ldx,ndim),eval(n),wk(lwk),iwk(liwk)) ! Read in the lower triangular part of the distance matrix Read (nin,*) d(1:ld) ! Perform principal co-ordinate analysis ifail = 0 Call g03faf(roots,n,d,ndim,x,ldx,eval,wk,iwk,ifail) ! Display results Write (nout,*) ' Scaled Eigenvalues' Write (nout,*) If (roots=='L' .Or. roots=='l') Then Write (nout,99999) eval(1:ndim) Else Write (nout,99999) eval(1:n) End If Write (nout,*) Flush (nout) ifail = 0 Call x04caf('General',' ',n,ndim,x,ldx,'Co-ordinates',ifail) 99999 Format (8F10.4) End Program g03fafe