gpiv_s-avg(1) Spatial statistics of PIV data.


gpiv_s-avg [-h | --help] [-p | --print] [-s] [-no_s] [-v | --version] [filename] < stdin > stdout


gpiv_s-avg reports the spatial global mean velocities and variances in x and y-direction of a PIV data stream. Only input data of which the peak number is not equal to -1 are taken into account.

The parameters read from the configuration resources (containing the key POST) may be overruled by the command line options, as explained below.


-h | --help
On-line help.

-p | --print
Prints parameters, command line options and input and eventually filenames to stdout. The output is identic of filename.par, in case -f is used.
Subtracts the mean x-and y-particle displacements from the input data.

Suppresses subtracting the mean values from the input data.

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

[-z dx0 dy0]
zero offset of displacement or velocity estimators.

Input PIV file. Overrides stdin and stdout. The output will be written to Parameters are stored in filename.par and may be used for future use by including them in ./gpivrc.



Gerber Van der Graaf


The program has been tested for PIV data. So far, no bugs have been found.