C (C) Copyright 1996-2016 ECMWF.
C 
C This software is licensed under the terms of the Apache Licence Version 2.0
C which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
C In applying this licence, ECMWF does not waive the privileges and immunities 
C granted to it by virtue of its status as an intergovernmental organisation nor
C does it submit to any jurisdiction.
C

      PROGRAM CONTAUTO

C     This program demonstrates magics contouring facilities.
C     Set to 'AUTOMATIC', Magics++ attempts to find the 'best'
C     contouring parameters for the trade-off between quality and speed. 


C     Open MAGICS and set the output device

      CALL POPEN
      CALL PARSE_COMMAND_LINE ('cont_auto_t799')


C     Set up the coastline attributes

      CALL PSETC ('MAP_COASTLINE',        'OFF')
      CALL PSETC ('MAP_COASTLINE_COLOUR', 'GREY')
      CALL PSETC ('MAP_GRID_COLOUR',      'GREY')


C     Pass the data to MAGICS
 
      CALL PSETC ('GRIB_INPUT_TYPE',      'FILE')
      CALL PSETC ('GRIB_INPUT_FILE_NAME', 't799_ll.grib')
      CALL PSETC ('GRIB_SPECIFICATION',   'OFF')
      CALL PGRIB
      

C     Define the contour     

      CALL PSETC  ('CONTOUR_LINE_COLOUR',          'BLUE')
      CALL PSETC  ('CONTOUR_HIGHLIGHT',            'OFF')
      CALL PSETC  ('CONTOUR_HILO',                 'OFF')
      CALL PSETC  ('CONTOUR_LEVEL_SELECTION_TYPE', 'INTERVAL')
      CALL PSETR  ('CONTOUR_INTERVAL',              2.5)
      CALL PCONT
      

C     Set up and plot the title text

      CALL PSETC ('TEXT_LINE_1', 'Contours with automatic parameters')
      CALL PSETI ('TEXT_LINE_COUNT', 1)
      CALL PSETC ('TEXT_JUSTIFICATION', 'CENTRE')
      CALL PTEXT


C     Plot the coastlines

      CALL PCOAST



C     New page, this time using a different area specification
C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PNEW  ('SUPER_PAGE')
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',    -68.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',  -135.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',    68.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',  135.0)

      CALL PSETC ('TEXT_LINE_1', 
     x            'Automatic Contouring, SWNE = -68.0, -135, 68, 135')

      CALL PCONT
      CALL PTEXT
      CALL PCOAST



C     New page, this time using a different area specification
C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PNEW  ('SUPER_PAGE')
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',   -45.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',  -90.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',   45.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',  90.0)

      CALL PSETC ('TEXT_LINE_1', 
     x            'Automatic Contouring, SWNE = -45.0, -90, 45, 90')

      CALL PCONT
      CALL PTEXT
      CALL PCOAST



C     New page, this time using a different area specification
C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PNEW  ('SUPER_PAGE')
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',    -20.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',   -45.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',    20.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',   45.0)

      CALL PSETC ('TEXT_LINE_1', 
     x            'Automatic Contouring, SWNE = -20, -45, 20, 45')

      CALL PCONT
      CALL PTEXT
      CALL PCOAST



C     New page, this time using a different area specification
C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PNEW  ('SUPER_PAGE')
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',      -20.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',     -25.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',       0.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',      0.0)

      CALL PSETC ('TEXT_LINE_1', 
     x            'Automatic Contouring, SWNE = -20, -25, 0, 0')

      CALL PCONT
      CALL PTEXT
      CALL PCOAST




C  --------------------- Cleanup and finish ----------------------

      CALL PCLOSE

      STOP
      END



C --------------------------------------------------------------------
C     PARSE_COMMAND_LINE
C     Checks the command-line for any arguments.
C     Arguments can come in pairs. Currently supported arguments are:
C     PROJECTION <CYLINDRICAL | POLAR_STEREOGRAPHIC>
C     DEVICE <PS | SVG | PNG>
C     e.g. Run the program with:
C       <progname> PROJECTION CYLINDRICAL  DEVICE SVG
C --------------------------------------------------------------------

      SUBROUTINE PARSE_COMMAND_LINE (OUTROOTNAME)

      CHARACTER*32 ARG
      CHARACTER*64 ID_TEXT
      CHARACTER*32 PROJECTION
      CHARACTER*32 DEVICE
      CHARACTER*48 EXENAME
      CHARACTER*8  MINIMAL
      CHARACTER*8  SEPARATOR
      CHARACTER*64 OUTNAME
      CHARACTER*(*) OUTROOTNAME

      CHARACTER*16 FORMATS_PS_GIF
      DIMENSION    FORMATS_PS_GIF(2)
      DATA         FORMATS_PS_GIF /'PS', 'GIF_ANIMATION'/

      CHARACTER*16 FORMATS_PS_GIF_PDF
      DIMENSION    FORMATS_PS_GIF_PDF(3)
      DATA         FORMATS_PS_GIF_PDF /'PS', 'GIF_ANIMATION', 'PDF'/

      CHARACTER*16 FORMATS_PS_GIF_SVG
      DIMENSION    FORMATS_PS_GIF_SVG(3)
      DATA         FORMATS_PS_GIF_SVG /'PS', 'GIF_ANIMATION', 'SVG'/

      CHARACTER*16 FORMATS_PS_PNG_SVG
      DIMENSION    FORMATS_PS_PNG_SVG(3)
      DATA         FORMATS_PS_PNG_SVG /'PS', 'PNG', 'SVG'/

      CHARACTER*16 FORMATS_PS_GIF_PNG_SVG
      DIMENSION    FORMATS_PS_GIF_PNG_SVG(4)
      DATA         FORMATS_PS_GIF_PNG_SVG /'PS', 'GIF_ANIMATION', 
     +                                     'PNG', 'SVG'/

      CHARACTER*16 FORMATS_ALL
      DIMENSION    FORMATS_ALL(5)
      DATA         FORMATS_ALL /'PS', 'SVG', 'PDF',
     +                          'KML', 'PNG'/

      INTEGER NUM_ARGS
      INTEGER DEVICE_SET

      DEVICE_SET = 0

      ID_TEXT = ''

      NUM_ARGS = IARGC()

      I = 1
C
C  Start GoTo
C
20    IF (I.LE.NUM_ARGS) THEN
          CALL GETARG ( I, ARG )
C
C         Set the projection?
C
          IF (ARG.EQ.'PROJECTION') THEN
              I = I + 1 
              CALL GETARG ( I, PROJECTION ) 
              CALL PSETC ('SUBPAGE_MAP_PROJECTION', PROJECTION)
C
C        Set the device?
C
          ELSEIF (ARG.EQ.'DEVICE') THEN
              I = I + 1 
              CALL GETARG ( I, DEVICE ) 

C             Set the output filename

              IF     (DEVICE.EQ.'PS')  THEN
                OUTNAME = OUTROOTNAME //   '.ps'
                CALL PSETC ('DEVICE',       DEVICE)
                CALL PSETC ('PS_DEVICE',   'ps_a4')
                CALL PSETC ('PS_FILE_NAME', OUTNAME)
              ELSEIF (DEVICE.EQ.'PS_NEW') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'PS')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'EPS') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'EPS')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'GIF') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'GIF_ANIMATION')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
                CALL PSETI ('OUTPUT_GIF_DELAY',     150)
              ELSEIF (DEVICE.EQ.'GIF_MULTI') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'GIF')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PNG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'PNG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'JPEG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'JPEG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'SVG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'SVG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'CSVG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'CSVG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'KML') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'KML')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)

              ELSEIF (DEVICE.EQ.'BAD') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'BAD')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)

              ELSEIF (DEVICE.EQ.'PS_GIF') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_GIF, 2)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_GIF_PDF') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_GIF_PDF, 3)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_GIF_SVG') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_GIF_SVG, 3)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_PNG_SVG') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_PNG_SVG, 3)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_GIF_PNG_SVG') THEN
                CALL PSET1C ('OUTPUT_FORMATS',
     +                               FORMATS_PS_GIF_PNG_SVG, 4)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'ALL') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_ALL, 5)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSE
                WRITE(*, '(A)') 'BAD DEVICE: ', DEVICE
              ENDIF
            
            DEVICE_SET = 1
C
C        Split the PostScript pages into separate files?
C
          ELSEIF (ARG.EQ.'PS_SPLIT') THEN
                CALL PSETC ('OUTPUT_PS_SPLIT',     'ON')
C
C        Turn on the numbering for the first page?
C
          ELSEIF (ARG.EQ.'FIRST_PAGE_NUMBER') THEN
                CALL PSETC ('OUTPUT_NAME_FIRST_PAGE_NUMBER', 'ON')
C
C         Set the minimal filename number width?
C
          ELSEIF (ARG.EQ.'MINIMAL') THEN
              I = I + 1 
              CALL GETARG (I, MINIMAL) 
              IF     (MINIMAL.EQ.'0')  THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 0)
              ELSEIF (MINIMAL.EQ.'1')  THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 1)
              ELSEIF (MINIMAL.EQ.'2') THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 2)
              ELSEIF (MINIMAL.EQ.'3') THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 3)
              ENDIF
C
C         Set the file number separator?
C
          ELSEIF (ARG.EQ.'SEP') THEN
              I = I + 1 
              CALL GETARG ( I, SEPARATOR ) 
              CALL PSETC ('OUTPUT_FILE_SEPARATOR', SEPARATOR)
C
C        Run using linear contouring?
C
          ELSEIF (ARG.EQ.'LINEAR') THEN
                CALL PSETC ('CONTOUR_METHOD', 'LINEAR')
                CALL PSETC ('PAGE_ID_LINE_USER_TEXT_PLOT', 'ON')
                CALL PSETC ('PAGE_ID_LINE_USER_TEXT', 'LINEAR')
          ENDIF
          I = I + 1 
          GOTO 20
      ENDIF
C
C     If no device has been set, then use PostScript by default
C
      IF (DEVICE_SET.EQ.0) THEN
        OUTNAME = OUTROOTNAME // '.ps'
        CALL PSETC ('PS_DEVICE',    'ps_a4')
        CALL PSETC ('PS_FILE_NAME', OUTNAME)
      ENDIF
C
      END

