NAME

       CONOP4 - sets option switches and specifys various CHARACTER parameters to be used by the Conran_family
       utility.

SYNOPSIS

       CONOP4 (IOPT,CHARS,NUMC,IFMT)

DESCRIPTION

       IOPT        Character,  input  --  Selects  an  internal  parameter  and  sets  an  option  switch.   The
                   possibilities are:

                     'DAS=ON', 'DAS=OFF', 'DAS=GTR', 'DAS=EQU', 'DAS=LSS', and 'DAS=ALL'
                     'FMT=ON' or 'FMT=OFF'
                     'TLE=ON' or 'TLE=OFF'

                   If the value of an IOPT option is 'OFF', then the next three arguments of  the  CONOP4  call,
                   CHARS,  NUMC,  and  IFMT  can  be given any dummy value.  Option settings will be returned to
                   their default values.

                   If an option is other than 'OFF', then the CHARS, NUMC, and IFMT arguments  can  be  used  to
                   override the default settings of that option.

       CHARS       Character, input -- A string of up to 64 characters.

       NUMC        Integer, input -- The number of characters in string CHARS.

       IFMT        Integer,  input  --  The  maximum  number of digits which can be printed by the output format
                   loaded into CHARS when IOPT='FMT=ON'.  IFMT is not used with any other value of IOPT.

                   The following options are defined by this subroutine:

       DAS     This parameter determines which contours are  represented  by  dashed  lines.   The  dashed  line
               pattern  is  set  in  argument CHARS.  Arguments NUMC and IFMT are not used.  They can assume any
               dummy value.

               If IOPT='DAS=OFF', only solid lines are used.  This is the default.

               All solid lines: CALL CONOP4('DAS=OFF',' ',0,0)

               To assign a specified line pattern to all contours:

               CALL CONOP4('DAS=ALL',CHARS,0,0)

               To assign a specified line pattern to selected contours:

               Contour > DBP:  CALL CONOP4('DAS=GTR',CHARS,0,0)

               Contour = DBP:  CALL CONOP4('DAS=EQU',CHARS,0,0)

               Contour < DBP:  CALL CONOP4('DAS=LSS',CHARS,0,0)

               The breakpoint for changing the line pattern, parameter DBP, is set by a call  to  entry  CONOP3.
               DBP = 0. is the default.  See parameter DBP in "man conop3".

               If  DAS  has  a value other than OFF, CHARS is a dashed line pattern described by a ten character
               string with a dollar sign ($) for solid and a single quote (') for blank.  Recall that in FORTRAN
               77, in a quoted string a single quote is represented by two single quotes ('').

               Example:  CALL CONOP4('DAS=GTR','$$$$$''$$$$',0,0)

       FMT     A parameter which specifies a format for output of the data values.

               If FMT=ON, the user must specify values for CHARS, NUMC, and IFMT.   CHARS  is  an  output  print
               format.   It has beginning and ending parenthesis as in (F8.2).  NUMC is the number of characters
               in CHARS.  It is 6 for (F8.2).  IFMT is the maximum number of digits which can be printed by this
               format.  It is 8 for an F8.2.

               Example:
               CHARS = '(F8.2)'
               NUMC  = 6
               IFMT = 8
               CALL CONOP4('FMT=ON',CHARS,NUMC,IFMT)

               Warning:  IFMT cannot be greater than 10; however, CONRAN will  not  test  for  a  valid  format.
               Thus, a format which results in IFMT > 10 will cause an undetected error.

               If FMT=OFF, the default values are: CHARS='(G10.3)', NUMC=7, and IFMT=10, respectively.

               To return to default settings use:
               CALL CONOP4('FMT=OFF',' ',0,0)

       TLE     The  parameter  to  place  a title at the top of the plot.  CHARS contains the title, NUMC is the
               number of characters in the title and IFMT is not used.

               Example: CALL CONOP4('TLE=ON','VECTOR REVIEW',13,0)

USAGE

       CONOP4 is called to set parameters of type CHARACTER before entries CONRAN, CONRAS, or CONRAQ are  called
       to generate the contour plots.

EXAMPLES

       Use the ncargex command to see pertinent examples tconaq, tconas and tconan.

ACCESS

       To use CONOP4 load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.

MESSAGES

       See the conran_family man page for a description of all Conran_family error messages and/or informational
       messages.

SEE ALSO

       Online:  conran_family,  conran_family_params,  conran,  conraq, conras, conop1, conop2, conop3, conpack,
       conpack_params Hardcopy: NCAR Graphics Contouring and Mapping Tutorial; NCAR Graphics Fundamentals,  UNIX
       Version; User's Guide for NCAR GKS-0A Graphics

COPYRIGHT

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.

UNIX                                               March 1993                                     CONOP4(3NCARG)