All integrable Hamiltonian systems are alike, while each nonintegrable one is nonintegrable in its own way
DESCRIPTION
The gfs-csv utility reads gfs files produced by gerris2D (1) simulations and writes scalar fields defined in them to a uniform grid, as x, y, z CSV data.
Such output data can be processed with many other programs, in particular the GMT (1) suite of plotting programs. The main purpose is to simplify the plotting of Gerris scalars (such as vorticity) alongside the arrows produced by vfplot (1) .
OPTIONS
-
-d--delimitercharacter -
Use the passed
characteras delimiter in the output rather than the default comma. -
-h--help -
Brief help.
-
-i--index -
Write the i, j indices instead of x, y values.
-
-o--outputfile -
Write output to
filerather than standard output. -
-s--scalarname -
Specify the scalar quantity to extract from the file. The argument can be a GtsVariable such as "Vorticity", or a GtsFunction such as "(Vorticity/2.0 + U)". In the latter case take care to quote shell metacharacters.
This option must be specified at least once, and may be specified multiple times; the effect being to have the columns corresponding to these in the output CVS file.
-
-v--verbose -
Verbose operation.
-
-V--version -
Version information.