Program g13acfe ! G13ACF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: g13acf, nag_wp ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Integer :: i, ifail, nk, nl, nvl ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: ar(:), p(:), r(:), v(:) ! .. Executable Statements .. Write (nout,*) 'G13ACF Example Program Results' Write (nout,*) ! Skip heading in data file Read (nin,*) ! Read in the problem size Read (nin,*) nk, nl Allocate (ar(nl),p(nl),r(nk),v(nl)) ! Read in data Read (nin,*)(r(i),i=1,nk) ! Calculate partial ACF ifail = -1 Call g13acf(r,nk,nl,p,v,ar,nvl,ifail) If (ifail/=0) Then If (ifail==3) Then Write (nout,99999) ' Only', nvl, 'valid sets were generated' Write (nout,*) Else Go To 100 End If End If ! Display results Write (nout,*) 'Lag Partial Predictor error Autoregressive' Write (nout,*) ' autocorrn variance ratio' // ' parameter' Write (nout,*) Write (nout,99998)(i,p(i),v(i),ar(i),i=1,nvl) 100 Continue 99999 Format (1X,A,I2,A) 99998 Format (1X,I2,F9.3,F16.3,F14.3) End Program g13acfe