NAME

       gpiv_vorty  -  Calculates  the  differential quantities vorticity, shear strain and normal
       strain from PIV data.

SYNOPSIS

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

DESCRIPTION

       gpiv_vorty  calculates the differential quantities like vorticity, shear strain and normal
       strain  from  PIV  data.  You  can  choose  from  several  differential  schemes:  central
       differentiation,   least   squares,   Richardson  extrapolation  and  circulation  method.
       Circulation method only allows one to calculate vorticity, but no strain. 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.vor.  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_VORTY(1)