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