Program g03effe ! G03EFF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: g03eff, nag_wp, x04caf ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Integer :: i, ifail, k, ldc, ldx, lwt, m, & maxit, n, nvar Character (1) :: weight ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: cmeans(:,:), css(:), csw(:), wk(:), & wt(:), x(:,:) Integer, Allocatable :: inc(:), isx(:), iwk(:), nic(:) ! .. Intrinsic Procedures .. Intrinsic :: count ! .. Executable Statements .. Write (nout,*) 'G03EFF Example Program Results' Write (nout,*) ! Skip heading in the data file Read (nin,*) ! Read in the problem size and control parameters Read (nin,*) weight, n, m, k, maxit If (weight=='W' .Or. weight=='w') Then lwt = n Else lwt = 0 End If ldx = n Allocate (x(ldx,m),wt(n),isx(m)) ! Read in data If (lwt>0) Then Read (nin,*)(x(i,1:m),wt(i),i=1,n) Else Read (nin,*)(x(i,1:m),i=1,n) End If ! Read in variable inclusion flags Read (nin,*) isx(1:m) ! Calculate NVAR nvar = count(isx(1:m)==1) ldc = k Allocate (cmeans(ldc,nvar),inc(n),nic(k),css(k),csw(k),iwk(n+3*k), & wk(n+2*k)) ! Read in the initial cluster centres Read (nin,*)(cmeans(i,1:nvar),i=1,k) ! Perform k means clustering ifail = 0 Call g03eff(weight,n,m,x,ldx,isx,nvar,k,cmeans,ldc,wt,inc,nic,css,csw, & maxit,iwk,wk,ifail) ! Display results Write (nout,*) ' The cluster each point belongs to' Write (nout,99999) inc(1:n) Write (nout,*) Write (nout,*) ' The number of points in each cluster' Write (nout,99999) nic(1:k) Write (nout,*) Write (nout,*) ' The within-cluster sum of weights of each cluster' Write (nout,99998) csw(1:k) Write (nout,*) Write (nout,*) ' The within-cluster sum of squares of each cluster' Write (nout,99997) css(1:k) Write (nout,*) Flush (nout) ifail = 0 Call x04caf('General',' ',k,nvar,cmeans,ldc,'The final cluster centres', & ifail) 99999 Format (1X,10I6) 99998 Format (1X,5F9.2) 99997 Format (1X,5F13.4) End Program g03effe