C++*********************************************************************
C
C    HELS.F
C
C **********************************************************************
C=* FROM: SPIDER - MODULAR IMAGE PROCESSING SYSTEM.   AUTHOR: J.FRANK  *
C=* Copyright (C) 1985-2005  Health Research Inc.                      *
C=*                                                                    *
C=* HEALTH RESEARCH INCORPORATED (HRI),                                *   
C=* ONE UNIVERSITY PLACE, RENSSELAER, NY 12144-3455.                   *
C=*                                                                    *
C=* Email:  spider@wadsworth.org                                       *
C=*                                                                    *
C=* This program is free software; you can redistribute it and/or      *
C=* modify it under the terms of the GNU General Public License as     *
C=* published by the Free Software Foundation; either version 2 of the *
C=* License, or (at your option) any later version.                    *
C=*                                                                    *
C=* This program is distributed in the hope that it will be useful,    *
C=* but WITHOUT ANY WARRANTY; without even the implied warranty of     *
C=* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
C=* General Public License for more details.                           *
C=*                                                                    *
C=* You should have received a copy of the GNU General Public License  *
C=* along with this program; if not, write to the                      *
C=* Free Software Foundation, Inc.,                                    *
C=* 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.      *
C=*                                                                    *
C **********************************************************************
C
C  HELS(NDOC,NDOUT)
C
C--*********************************************************************

        SUBROUTINE HELS(NDOC,NDOUT)

        INCLUDE 'CMBLOCK.INC'
        INCLUDE 'CMLIMIT.INC'

        PARAMETER     (NDLI = 2)
        DIMENSION     DLIST(NDLI)

        COMMON        Q(1024)
        INTEGER       X41,X42,TOTEL
        CHARACTER(LEN=MAXNAM) :: FINP,FINPAT,DOCFIL
        CHARACTER*1   NULL

        NULL = CHAR(0)
        
        CALL  RDPRM(THRESHOLD,NOT_USED,'THRESHOLD')

        CALL  FILERD(DOCFIL,NLETI,NULL,'DENDROGRAM DOCUMENT',IRTFLG)
        IF (IRTFLG .NE. 0)  RETURN
        
        NMAX = 0
        CALL  FILSEQP(FINPAT,NLET,ILIST,NMAX,NIMA,
     &                'ENTER TEMPLATE FOR SELECTION DOC',IRTFLG)

C	# OF OBJECTS IN A GROUP

        X41   = 0
        TOTEL = 0.0

C	# OF GROUPS

        X42   = 1
        NLIST = 2
        K     = 0
        K2    = 1

778     CONTINUE

        LERR = -1
        KP1  = K+1
        CALL  UNSAV(DOCFIL,K,NDOC,KP1,Q,2,LERR,K2)
        IF (LERR.EQ.0)  THEN

          IF(K.EQ.0)  THEN
            X31 = Q(1)
            X32 = Q(2)
            K   = K+1
            X41 = X41+1
            CALL  FILGET(FINPAT,FINP,NLET,X42,INTFLAG)
            DLIST(1) = X41
            DLIST(2) = X31
            IAP      = 0
            CALL SAVDN1(NDOUT,FINP,DLIST,NDLI,X41-1,IAP)
            GOTO  778
          ENDIF

          X21 = Q(1)
          X22 = Q(2)
          K   = K+1

          IF (X32 .LT. THRESHOLD) THEN
            X41      = X41+1
            DLIST(1) = X41
            DLIST(2) = X21
            IAP      = 1
            CALL SAVDN1(NDOUT,FINP,DLIST,NDLI,K,IAP)
            X32 = X22

          ELSE
            CLOSE(NDOUT)
            IF (X42.EQ.1)  WRITE(NOUT,122)
122         FORMAT(' Group number      ','Number of elements')

            WRITE(NOUT,123)  X42,X41
123         FORMAT(1X,I5,14X,I10)
            TOTEL = TOTEL + X41
            X42   = X42 + 1
            CALL  FILGET(FINPAT,FINP,NLET,X42,INTFLAG)
            X41      = 1
            X32      = X22
            DLIST(1) = X41
            DLIST(2) = X21
            IAP      = 0
            CALL SAVDN1(NDOUT,FINP,DLIST,NDLI,X41-1,IAP)
          ENDIF

          GOTO 778
        ENDIF

        WRITE(NOUT,123)  X42,X41
        TOTEL = TOTEL+X41
        WRITE(NOUT,33)  TOTEL,X42
33      FORMAT('   Total number of objects  = ',I10,
     &         ' Number of classes  = ',I10)

5       CLOSE(NDOC)
        CLOSE(NDOUT)

        RETURN
        END