NAME

       gpiv_sstrain - Calculates the shear strain from PIV data.

SYNOPSIS

       gpiv_sstrain [-d N] [-h | --help] [--no_g ] [-p | --print] [-g | --g] [-v | --version] [filename] < stdin
       > stdout

DESCRIPTION

       gpiv_sstrain calculates the shear strain from PIV data. You can choose from several differential schemes:
       central differentiation, least squares and Richardson extrapolation. The output can be generated as ASCII
       data  containing four columns or as GNUPlot Data format that allows one to view/print the data as contour
       plots.

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

Options

       -d N   Differential  type  to  be  used:  central  difference  (N=0),  least  squares  (N=1),  Richardson
              interpolation (N=2), circulation method (N=3)

       -h | --help
              On-line help

       -p | --print
              Print parameters, command line options and eventually used input and output filenames  to  stdout.
              The output is identic of filename.par, in case filename is used.

       -g     Show contour plot of the output with gnuplot.

       --no_g Suppresses to show contour plot of the output with gnuplot.

       -v | --version
              Print version information on standard output, then exit successfully.

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

SEE ALSO

       gpivtools

AUTHOR

       Gerber Van der Graaf

                                                 8 November 2006                                 GPIV_SSTRAIN(1)