NAME

       gpiv_t-avg - Calculates time-averaged mean and variances of PIV data.

SYNOPSIS

       gpiv_t-avg  [-dn  |  --dir_name  dir  basename]  [-df  |  --first_dir  N]  [-dl  |  --last_dir  N] [-fb |
       --file_basename file basename] [-ff | --first_file N] [-fl | --last_file N] [-fx | --file_prefix]  [-h  |
       --help] [-n | --none] [-p | --print] [-relrms] [-uv | --print] [-v | --version]

DESCRIPTION

       gpiv_t-avg  calculates  mean and variances from a series of piv data resulting into time-averaged values.
       If no parameters are defined at the command line, standard parameters will be used that  are  defined  in
       the script. This program does not use the parameter resources from libgpiv.

Options

       -dn | --dir_name dir base-name
              The  dir  base-name represents the directory name without its last number. It is supposed that the
              last number in the directory name is a counter.

       -df | --first_dir
              Defines the counter  N of the first directory number at which the analyses starts.

       -dl | --last_dir
              Last directory number N at which the analyses ends.

       -fb | --file_base_name file base-name
              The filename has to be given without its .piv extension. The file base-name  represents  the  file
              name  without  its  last number, before the extension. If not -fx key is used, it is supposed that
              the last number in the file name is a counter. The output will be written  to  dir  base-name/file
              base-name.ta_mean.piv  and  dirname/filename.ta_sdev.piv  at  which  mean values and variances are
              written respectively or to dirname/filename.ta_U.piv and to dirname/filename.ta_V.piv  if  -uv  is
              used.

       -ff | --first_file
              Defines the counter  Nof first file number at which the analyses starts.

       -fl | --last_file
              Last file number N at which the analyses ends.

       -fx | --file_prefix
              Prefix numbering to file base name.

       -h | --help
              On-line help.

       -n | --none
              Suppresses real execution.

       -p | --print
              Prints parameters, command line options and input and output filenames to stdout.

       -relrms
              Prints relative rms, related to the absolute mean value.

       -uv    Writes U and v displacements/velocities to separate outputs.

       -v | --version
              Prints version information to standard output, then exits successfully.

       SEE ALSO
              gpivtools

AUTHOR

       Gerber Van der Graaf

                                                 19 Januari 2005                                   GPIV_T-AVG(1)