PRO nc_put, fld, file_name, NCDF_DB = ncdf_db, X = x, Y = y, Z = z, T = t, GLOBAL = global

@common
@com_eg

; fld = structure
; fdl.data, fld.units, fld.short_name, fld.long_name, fld.missing_value, fld.direc

; fld.direc= data type (x,xy,xyzt,yt,etc...)
; X,Y,Z,T = structures containing attributes for each direction :
;     x.name, x.units, x.long_name, x.data (+t.calendar and t.origin for time)
; Global = global attributes: conventions, title, origin
   IF debug_w THEN print, ' '
   IF debug_w THEN print, '  ENTER nc_put...'

   dim = size(fld.data)
   dim_check = 0

   type = fld.direc

; open netCDF file

   cdfid = ncdf_create(ncdf_db+file_name, /clobber)
   IF debug_w THEN print, '    type,cdfid = ', type, cdfid
   ncdf_control, cdfid, /fill

; grid

   jpi=1
   jpj=1
   jpk=1

   xpos = strpos(type, 'x')
   ypos = strpos(type, 'y')
   zpos = strpos(type, 'z')
   tpos = strpos(type, 't')

   IF xpos NE -1 THEN BEGIN 
      dim_check = dim_check+1
      jpi = dim(xpos+1)
   ENDIF
   xid = ncdf_dimdef(cdfid, 'lon', jpi)
       
   IF ypos NE -1 THEN BEGIN 
      dim_check = dim_check+1
      jpj = dim(ypos+1)
   ENDIF 
   yid = ncdf_dimdef(cdfid, 'lat', jpj)

   IF zpos NE -1 THEN BEGIN 
      dim_check = dim_check+1
      jpk = dim(zpos+1)
   ENDIF 
   zid = ncdf_dimdef(cdfid, 'depth', jpk)

   IF tpos NE -1 THEN BEGIN 
      dim_check = dim_check+1
   ENDIF 
   tid = ncdf_dimdef(cdfid, 'time', /UNLIMITED)

   
   IF dim_check NE dim(0) THEN BEGIN
      print,  ' ERROR data size / type mismatch ', type, dim(0)
   ENDIF 
   swx = 0
   swy = 0
   swz = 0
   swt = 0

   ; horizontal zonal axis
;   IF strpos(type, 'x') NE -1 AND keyword_set(X) THEN BEGIN 
      IF strpos (type, 'xy') NE -1 THEN BEGIN 
         lonid = ncdf_vardef(cdfid,'lon', [xid, yid], /FLOAT)
      ENDIF ELSE lonid = ncdf_vardef(cdfid,'nav_lon', [xid], /FLOAT)
      NCDF_ATTPUT, cdfid, lonid, 'units', x.units
      NCDF_ATTPUT, cdfid, lonid, 'long_name', x.long_name
      NCDF_ATTPUT, cdfid, lonid, 'valid_min', min(x.data), /float
      NCDF_ATTPUT, cdfid, lonid, 'valid_max', max(x.data), /float
      swx = 1
;   ENDIF 

   ; horizontal meridional axis
;   IF strpos(type, 'y') NE -1 AND keyword_set(Y) THEN BEGIN 
      IF strpos (type, 'xy') NE -1 THEN BEGIN 
         latid = ncdf_vardef(cdfid,'lat', [xid, yid], /FLOAT)
      ENDIF ELSE latid = ncdf_vardef(cdfid,'nav_lat', [yid], /FLOAT)
      NCDF_ATTPUT, cdfid, latid, 'units', y.units
      NCDF_ATTPUT, cdfid, latid, 'long_name', y.long_name
      NCDF_ATTPUT, cdfid, latid, 'valid_min', min(y.data), /float
      NCDF_ATTPUT, cdfid, latid, 'valid_max', max(y.data), /float
      swy = 1
;   ENDIF 

   ; vertical axis
      IF zpos NE -1 AND keyword_set(Z) THEN BEGIN 
         vertid = ncdf_vardef(cdfid,z.name, [zid], /FLOAT)
         NCDF_ATTPUT, cdfid, vertid, 'units', z.units
         NCDF_ATTPUT, cdfid, vertid, 'long_name', z.long_name
         NCDF_ATTPUT, cdfid, vertid, 'valid_min', min(z.data), /float
         NCDF_ATTPUT, cdfid, vertid, 'valid_max', max(z.data), /float
         swz = 1
      ENDIF 
   
   ; time axis
   IF tpos NE -1 AND keyword_set(T) THEN BEGIN 
      mid = NCDF_VARDEF(cdfid, 'time', [tid], /long)
      NCDF_ATTPUT, cdfid, mid, 'units', t.units
      NCDF_ATTPUT, cdfid, mid, 'calendar', t.calendar
      NCDF_ATTPUT, cdfid, mid, 'origin', t.origin
      NCDF_ATTPUT, cdfid, mid, 'long_name', t.long_name
      NCDF_ATTPUT, cdfid, mid, 'short_name', 'Time'
      NCDF_ATTPUT, cdfid, mid, 'valid_min', min(t.data), /long
      NCDF_ATTPUT, cdfid, mid, 'valid_max', max(t.data), /long
      time_data = t.data
      swt = 1
   ENDIF ELSE BEGIN
      mid = NCDF_VARDEF(cdfid, 'time', [tid], /long)
      NCDF_ATTPUT, cdfid, mid, 'units', "days since 1991-03-01 00:00:00"
      time_data = 1.
      swt = 1
      type = type+'t'
      CASE type OF
          'xt':   fld.data = reform(fld.data, jpi, 1)
          'yt':   fld.data = reform(fld.data, jpj, 1)
          'zt':   fld.data = reform(fld.data, jpk, 1)
          'xyt':  fld.data = reform(fld.data, jpi, jpj, 1)
          'xzt':  fld.data = reform(fld.data, jpi, jpk, 1)
          'yzt':  fld.data = reform(fld.data, jpj, jpk, 1)
          'xyzt': fld.data = reform(fld.data, jpi, jpj, jpk, 1)
      ENDCASE  
   ENDELSE 

   IF debug_w THEN print, '    test 1 fld.short_name  = ', fld.short_name
   IF debug_w THEN print, '    swx,y,z,t  = ', swx, swy, swz, swt

; field attributes

   CASE type OF
      'x': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid], /FLOAT)
      'y': fldid = NCDF_VARDEF(cdfid,fld.short_name, [yid], /FLOAT)
      'z': fldid = NCDF_VARDEF(cdfid,fld.short_name, [zid], /FLOAT)
      't': fldid = NCDF_VARDEF(cdfid,fld.short_name, [tid], /FLOAT)
      'xy': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, yid], /FLOAT)
      'xz': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, zid], /FLOAT)
      'yz': fldid = NCDF_VARDEF(cdfid,fld.short_name, [yid, zid], /FLOAT)
      'xyz': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, yid, zid], /FLOAT)
      'xyt': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, yid, tid], /FLOAT)
      'xzt': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, zid, tid], /FLOAT)
      'yzt':  fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, yid, zid, tid], /FLOAT)
      'xyzt': fldid = NCDF_VARDEF(cdfid,fld.short_name, [xid, yid, zid, tid], /FLOAT)
      ELSE:
   ENDCASE 
   CASE type OF
      'xyzt':  fld.data = reform(fld.data,jpi,jpj,jpk,jpt)
      ELSE:
   ENDCASE 
   NCDF_ATTPUT, cdfid, fldid, 'units', fld.units
   NCDF_ATTPUT, cdfid, fldid, 'long_name', fld.long_name
   NCDF_ATTPUT, cdfid, fldid, 'short_name', fld.short_name
   NCDF_ATTPUT, cdfid, fldid, 'missing_value', fld.missing_value
   NCDF_ATTPUT, cdfid, fldid, 'valid_min', min(fld.data(where (fld.data NE fld.missing_value))), /float
   NCDF_ATTPUT, cdfid, fldid, 'valid_max', max(fld.data(where (fld.data NE fld.missing_value))), /float
   
   
; global attributes

   NCDF_ATTPUT, cdfid, /GLOBAL, 'Conventions', global.conventions
   NCDF_ATTPUT, cdfid, /GLOBAL, 'Title', global.title
   NCDF_ATTPUT, cdfid, /GLOBAL, 'Origin', global.origin
   NCDF_ATTPUT, cdfid, /GLOBAL, 'Software', global.software

; put file in data mode

   NCDF_CONTROL, cdfid, /ENDEF   
    
;
; put grid data
;
   print, ' '
   print, '    Writing '+fld.short_name+' to netCDF file ',ncdf_db+file_name
   

;   stop

   IF swx EQ 1 THEN BEGIN
      print, '       writing lon, size =', size(x.data)
      NCDF_VARPUT, cdfid, lonid, x.data
   END 
   IF swy EQ 1 THEN BEGIN
      print, '       writing lat, size =', size(y.data)
      NCDF_VARPUT, cdfid, latid, y.data
   END 
   IF swz EQ 1 THEN BEGIN
      print, '       writing depth, size =', size(z.data)
      NCDF_VARPUT, cdfid, vertid, z.data
   END 
   IF swt EQ 1 THEN BEGIN
      print, '       writing time, size=', size (time_data)
      NCDF_VARPUT, cdfid, mid, time_data
   END 

; put field data
   
    print, '       Field legend       =  ',fld.long_name
    print, '       Field dimensions   =  ',size(fld.data)
    print, '       Field min/max/unit =  ',min(fld.data(where (fld.data NE fld.missing_value))), max(fld.data(where (fld.data NE fld.missing_value))), '   ', fld.units
    print, '       Global attributes=  Conventions:  ', global.conventions
    print, '                           Title:        ', global.title
    print, '                           Origin:       ', global.origin

;    stop

    NCDF_VARPUT, cdfid, fldid, fld.data
   
; close file

    NCDF_CLOSE, cdfid
    IF debug_w THEN print, '  ...EXIT nc_put'

END