NAME

       CPPKLB - Picks a set of labels for labeled contour levels.

SYNOPSIS

       CALL CPPKLB (ZDAT, RWRK, IWRK)

C-BINDING SYNOPSIS

       #include <ncarg/ncargC.h>

       void c_cppklb (float *zdat, float *rwrk, int *iwrk)

DESCRIPTION

       All three arguments are arrays used in the last call to CPRECT, CPSPS1, or CPSPS2, the contents of which
       must not have been changed since that call.

       ZDAT        (REAL array, dimensioned as specified in the last call to CPRECT, CPSPS1, or CPSPS2, input)
                   is the data array.

       RWRK        (REAL array, dimensioned as specified in the last call to CPRECT, CPSPS1, or CPSPS2,
                   input/output) is the real workspace array.

       IWRK        (INTEGER array, dimensioned as specified in the last call to CPRECT, CPSPS1, or CPSPS2,
                   input/output) is the integer workspace array.

C-BINDING DESCRIPTION

       The C-binding argument descriptions are the same as the FORTRAN argument descriptions.

USAGE

       Normally, CPPKLB is called by Conpack when labels for the contour levels are needed.  You can call CPPKLB
       directly (after the initialization call to CPRECT, CPSPS1 or CPSPS2) when you want to modify the
       resulting parameter arrays that specify the labels.

       If the constant-field-flag 'CFF' is non-zero, indicating that, during the last call to CPRECT, CPSPS1, or
       CPSPS2, the data were found to be essentially constant, CPPKLB does nothing.  Otherwise, CPPKLB examines
       the first 'NCL' elements of the parameter array 'CLV', which defines the contour levels, and the
       associated parameter arrays, looking for levels that are to be labeled ('CLU' = 2 or 3) for which no
       label is specified (the associated element of 'LLT' is ' ', a single blank.) If any such levels are
       found, labels are generated for them.

       The scale factor 'SFU' may be set as a byproduct of choosing the labels.  See the description of the
       parameters 'SFU' (scale factor used) and 'SFS' (scale factor selector) in the conpack_params man page.

       After calling CPPKLB, a user program may examine the generated labels and change them in various ways.

EXAMPLES

       Use the ncargex command to see the following relevant example: ccpklb.

ACCESS

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

MESSAGES

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

SEE ALSO

       Online: conpack, cpback, cpchcf, cpchcl, cpchhl, cpchil, cpchll, cpcica, cpclam, cpcldm, cpcldr, cpcltr,
       cpcnrc, cpdrpl, cpezct, cpgetc, cpgeti, cpgetr, cplbam, cplbdr, cpmpxy, cpmviw, cpmvrw, cppkcl, cprect,
       cprset, cpscae, cpsetc, cpseti, cpsetr, cpsps1, cpsps2, ncarg_cbind

       Hardcopy: NCAR Graphics Contouring and Mapping Tutorial

COPYRIGHT

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.