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
-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 filename.ma.piv. The parameters will be written or
appended to filename.par and may be used for future use by
including them in ./gpivrc.
Gerber Van der Graaf
8 November 2006