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