j.j. green | gfs2xyz2D(1)

Name

gfs2xyz2D — dump scalar octree data in gerris (gfs) files to uniform grids in ASCII columns.

Synopsis

gfs2xyz2D [-h ] [-i ] [-o file] [-s variable] [-S ] [-v ] [-V ] file

DESCRIPTION

The gfs2xyz2D utility reads gfs files produced by gerris2D(1) simulations and writes scalar fields defined in them to a uniform grid, as x, y, z ASCII column data.

Such output data can be processed with many other programs, in particular the GMT(1) suite of plotting programs.

OPTIONS

-h, --help: Brief help.
-i, --index: Write the i, j indices instead of x, y values.
-o, --output file: Plot output to file rather than standard output.
-s, --scalar name: 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.
-S, --sag: Add a sag(5) header to the output data.
-v, --verbose: Verbose operation.
-V, --version: Version information.

EXAMPLES

To extract the scalar field Vorticity from the simulation frame-2.0.gfs

gfs2xyz2D -v -s Vorticity -o v1.dat frame-2.0.gfs

Likewise, but extracting a function of the variables

gfs2xyz2D -v -s '(0.5 * (U + V))' -o v2.dat frame-2.0.gfs

AUTHOR

J.J. Green (<j.j.green@gmx.co.uk>)

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