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       gpiv_manipiv,    gpiv_fasty,   gpiv_flipx,   gpiv_flipy,   gpiv_revert,
       gpiv_rot90, gpiv_rot180 - Simple data manipulation tool for PIV data.


       gpiv_manipiv [-h | --help] [-p | --print] [-v | --version] [-fi  x0  y0
       x1  y1]  [-no_fi  |  --pass  x0  y0 x1 y1] [-fy] [-r] [--rev] [-x] [-y]
       [filename] < stdin > stdout


       gpiv_manipiv manipulates order  and  positions  of  PIV  data,  mirrors
       (flips)  the  data in horizontal (x) or vertical (y) direction, rotates
       over 90 and 180 degrees. As rotating over 180  degrees  is  identic  to
       flipping over x as well as over y-direction, the program must be called
       twice or must be called once by rot180.

       The parameters read from the configuration  resources  (containing  the
       key  POST)  may  be overruled by the command line options, as explained
       below. In case an alias name of gpiv_manipiv has been  used,  all  non-
       relevant parameters are disabled.


       -fi x0 y0 x1 y1
              filters out data from a piv data stream from location (x0,y0) to
              (x1,y1). Filtering only implies setting the peak number to -1.

       -no_fi | --pass x0 y0 x1 y1
              filters out all data, except those from (x0,y0) to (x1,y1). This
              option  is  the  opposite of -fi. Filtering only implies setting
              the peak number to -1.

       -fy    Returns fast running y-positions of  data  that  are  originally
              written  with  fast  running  x-positions.  All  other variables
              (particle displacements, snr, peak#) are at the  new  positions,
              too. Identic to fasty.

       -h | --help
              On-line help.

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

       -r     Rotates the data over 90 degrees. Identic to rot90.

       --rev  Reverts array indexes of output data for getting reversed order.
              This results into high to low running positions or  vice  versa.
              Identic to revert.

       -v | --version
              Print   version  information  on  standard  output,  then  exits

       -x     Flips the data in x-direction (vertical axis). Identic to flipx.

       -y     Flips  the  data  in  y-direction  (horizontal axis). Identic to

              Input PIV data file. Overrides stdin and stdout. Output will  be
              written  to  The parameters will be written or
              appended to filename.par and may  be  used  for  future  use  by
              including them in ./gpivrc.

       SEE ALSO


       Gerber Van der Graaf

                                8 November 2006