tecplot不支持导入多个function文件，这导致我计算出的速度数据文件和压强数据文件以及涡量数据文件没法在一个图中操作显示。

没法，写个小玩意克服一下

使用方法

$ mergep3df  newp3df newname  p3df1 name1  p3df2  name2 p3df3 name3 ...

MODULE mergep3d
CONTAINS


SUBROUTINE mergep3dfunc(ndatafiles, datafiles, &
                        nb,ni,nj,nk,  nvar,  newp3df)
  IMPLICIT NONE
  INTEGER,INTENT(IN) :: ndatafiles, nvar(:)
  CHARACTER(LEN=*),DIMENSION(:),INTENT(IN) :: datafiles
  CHARACTER(LEN=*),INTENT(IN) :: newp3df
  INTEGER,POINTER,DIMENSION(:) :: ni,nj,nk
  INTEGER,INTENT(in) :: nb
  ! local
  INTEGER nvars, tmpint, b, n, i,j,k,l
  INTEGER,POINTER,DIMENSION(:) :: offset, funit,shift
  REAL(4),POINTER,DIMENSION(:,:,:,:) :: gdata
  
  nvars = SUM( nvar(1:ndatafiles) )
  OPEN(33,FILE=TRIM(newp3df),action='write', form='unformatted')
  WRITE(33) nb  
  WRITE(33) (ni(b),nj(b),nk(b),nvars, b=1,nb)
  
  ALLOCATE( offset(ndatafiles), funit(ndatafiles), shift(ndatafiles) )
  offset=0
  shift = 0
  DO n=1, ndatafiles
    funit(n) = 1000 + n
    OPEN(UNIT=funit(n),FILE=TRIM(datafiles(n)),action='read', form='unformatted')
    READ(funit(n)) tmpint
    READ(funit(n)) (tmpint,tmpint,tmpint,tmpint, b=1,nb)  
    offset(n) = FTELL(funit(n))
    
    shift(n+1) = shift(n) + nvar(n) 
  ENDDO
  
  
  DO b=1, nb
    ALLOCATE( gdata(ni(b),nj(b),nk(b), nvars) )
    DO n=1, ndatafiles
      READ(funit(n)) (( ((gdata(i,j,k,l),i=1,ni(b)),j=1,nj(b)),k=1,nk(b)  ), &
                          l=shift(n)+1,shift(n+1) )      
    ENDDO
    WRITE(33) (( ((gdata(i,j,k,l),i=1,ni(b)),j=1,nj(b)),k=1,nk(b)  ),   l=1,nvars )
  ENDDO
  
  

END SUBROUTINE


SUBROUTINE checkp3dfunc(ndatafiles, datafiles,  &
                        nb, ni, nj, nk, ierr)
  IMPLICIT NONE
  INTEGER,INTENT(IN) :: ndatafiles
  CHARACTER(LEN=*),DIMENSION(:),INTENT(IN) :: datafiles
  INTEGER,POINTER,DIMENSION(:) :: ni,nj,nk
  INTEGER,INTENT(OUT) :: nb,  ierr
  
  ! local
  INTEGER :: n,b,db,nfunc,dfunc
  INTEGER,DIMENSION(:),POINTER :: di,dj,dk
  
  OPEN(33,FILE=TRIM(datafiles(1)),action='read', form='unformatted')
  READ(33) nb;  WRITE(*,*) 'nblock=',nb
  ALLOCATE(ni(nb),nj(nb),nk(nb),   &
           di(nb),dj(nb),dk(nb),    )
  READ(33) (ni(b),nj(b),nk(b),nfunc, b=1,nb)
  WRITE(*,*) 'done read'
  !DO n=1,nb
  !  WRITE(*,*) ni(n),nj(n),nk(n),nvar(n)
  !ENDDO
  CLOSE(33)
  
  ierr = 0
  DO n=1,ndatafiles
    OPEN(33,FILE=TRIM(datafiles(n)),action='read', form='unformatted')
    READ(33) db
    IF(db /= nb) THEN
      ierr = 1
      CLOSE(33)
      RETURN
    ENDIF
    
    READ(33) (di(b),dj(b),dk(b),dfunc, b=1,nb)
    DO b=1,nb
      IF(di(b) /= ni(b) .OR. dj(b) /= nj(b) .OR. dk(b) /= nk(b) ) THEN
      
        WRITE(*,*) 'block ',b, di(b),dj(b),dk(b), ni(b),nj(b),nk(b)
        ierr = 2
        CLOSE(33)
        RETURN
      ENDIF
    ENDDO
    
    
    
    CLOSE(33)
  ENDDO
END SUBROUTINE


SUBROUTINE getvarnames(ndatafiles, datafiles,varnames, nvar)
  IMPLICIT NONE
  INTEGER,INTENT(OUT) :: ndatafiles
  INTEGER,DIMENSION(:), INTENT(OUT) :: nvar
  CHARACTER(LEN=*),DIMENSION(:),INTENT(OUT) :: varnames,datafiles
  
  ! local 
  CHARACTER(LEN=128) :: tmpstr
  
  INTEGER :: IO, argn,n,i
  LOGICAL :: notend
  
  argn = command_argument_count()
  ndatafiles = (argn - 2)/2
  WRITE(*,*) 'argn=',argn,'ndatafiles =',ndatafiles 
  
  i=0
  DO n=1,ndatafiles
    nvar(n)=0
    CALL get_command_argument(n+n+1,  datafiles(n))
    CALL get_command_argument(n+n+2,  tmpstr)
    !WRITE(*,*) tmpstr
    OPEN(33,FILE=TRIM(tmpstr))
    
    notend = .TRUE.
    DO WHILE (notend)
      READ(33, *, IOSTAT = IO ) tmpstr
      IF(IO>=0) THEN
        nvar(n) = nvar(n) + 1
        i = i + 1
        varnames(i) = tmpstr
        WRITE(*,*) i, TRIM( varnames(i) )
      ELSE
        notend = .FALSE.
      ENDIF
    ENDDO
    CLOSE(33)  
    
  ENDDO
  !DO n=1,i
  !  WRITE(*,*) TRIM(  varnames(n)  )
  !ENDDO
  !WRITE(*,*) nvar(1:ndatafiles)
END SUBROUTINE

SUBROUTINE mergename(ndata, nvar, varnames, namefile)
  INTEGER,INTENT(IN) :: ndata
  INTEGER,DIMENSION(:),INTENT(IN) :: nvar
  CHARACTER(LEN=*),DIMENSION(:),INTENT(IN) :: varnames
  CHARACTER(LEN=*),INTENT(IN) :: namefile
  ! local
  INTEGER :: i,j,n
  OPEN(33,FILE=TRIM(namefile))
  
  j = 0
  DO n=1, ndata
  DO i=1, nvar(n)
      j=j+1
      WRITE(33, *) TRIM(varnames(j))
  ENDDO    
  ENDDO

END SUBROUTINE
END MODULE


PROGRAM main
  USE mergep3d
  IMPLICIT NONE
  INTEGER :: ndata,nvar(1024),nb,ierr
  INTEGER,POINTER,DIMENSION(:) :: ni,nj,nk
  CHARACTER(LEN=64) :: fnames(1024),varnames(1024)，newp3df,newname
  
  CALL getvarnames(ndata, fnames, varnames, nvar)
  CALL checkp3dfunc(ndata, fnames,  nb,ni,nj,nk,  ierr)
  WRITE(*,*) 'ierr=',ierr

  CALL get_command_argument(2,newp3df)
  CALL get_command_argument(3,newname)

  CALL mergep3dfunc(ndata, fnames,  nb,ni,nj,nk,  nvar,  TRIM(newp3df) )
  
  CALL mergename(ndata, nvar, varnames, TRIM(newname) )
END