Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

field(1rheolef) [osf1 man page]

field(1rheolef) 						    rheolef-6.1 						   field(1rheolef)

field -- plot a field SYNOPSIS
field options filename[.field[.gz]] DESCRIPTION
Read and output a finite element field from file. EXAMPLE
field square.field field square.field -bw field box.field INPUT FILE SPECIFICATION
filename specifies the name of the file containing the input field. - read field on standard input instead on a file. -Idir -I dir Add dir to the rheolef file search path. This option is usefull e.g. when the mesh .geo and the .field fikes are in different directories. This mechanism initializes a search path given by the environment variable `RHEOPATH'. If the environment variable `RHEOPATH' is not set, the default value is the current directory. @item -catchmark label Jump accross the file to the specifield label. Label start at the begining of a line, preceded by a `#' mark (see see catchmark(4)). OUTPUT FILE FORMAT OPTIONS
-field output field on standard output stream in field text file format. -gmsh output field on standard output stream in gmsh text file format. -gmsh-pos output field on standard output stream in gmsh-pos text file format, suitable for mesh adaptation purpose. -bamg-bb output field on standard output stream in bamg-bb text file format, suitable for mesh adaptation purpose. -image-format string The argument is any valid image format, such as bitmap png, jpg, gif or vectorial ps or pdf image file formats, and that could be handled by the corresponding render. The output file is e.g. `@emph{basename'.png} when @emph{basename} is the name of the mesh, or can be set with the -name option. GETTING INFORMATION
-min -max print the min (resp. max) value of the scalar field and then exit. RENDER OPTIONS
-gnuplot use gnuplot tool. This is the default in one and two dimension. -mayavi use mayavi tool. This is the default for tridimensional geometries. RENDERING OPTIONS
-color -gray -black-and-white -bw Use (color/gray scale/black and white) rendering. Color rendering is the default. -elevation -noelevation For two dimensional field, represent values as elevation in the third dimension. The default is no evelation. -scale float applies a multiplicative factor to the field. This is useful e.g. in conjonction with the elevation option. The default value is 1. -stereo -nostereo Rendering mode suitable for red-blue anaglyph 3D stereoscopic glasses. This option is only available with mayavi. -fill isoline intervals are filled with color. This is the default. -nofill draw isolines by using lines. -cut -nocut Cut by a specified plane. The cutting plane is specified by its origin point and normal vector. This option requires the mayavi code. -origin float [float [float]] set the origin of the cutting plane. Default is (0.5, 0.5, 0.5). -normal float [float [float]] set the normal of the cutting plane. Default is (1, 0, 0). -iso [float] do draw 3d isosurface. When the optional float is not provided, a median value is used. This option requires the mayavi code. -noiso do not draw isosurface. -n-iso int For 2D visualizations, the isovalue table contains regularly spaced values from fmin to fmax, the bounds of the field. -proj Convert all selected fields to Pk-continuous approximation by using a L2 projection. -round [float] Round the input up to the specifiexd precision. This option, combined with -field, leads to a round filter. Usefull for non- regression test purpose, in order to compare numerical results between files with a limited precision, since the full double preci- sion is machine-dependent. -n-iso-negative int The isovalue table is splitted into negatives and positives values. Assume there is n_iso=15 isolines: if 4 is requested by this option, then, there will be 4 negatives isolines, regularly spaced from fmin to 0 and 11=15-4 positive isolines, regularly spaced from 0 to fmax. This option is usefull when plotting e.g. vorticity or stream functions, where the sign of the field is representa- tive. -subdivide int When using a high order geometry, the number of points per edge used to draw a curved element. Default value is the mesh order. -deformation Render vector-valued fields as deformed mesh using mayavi or gnuplot. This is the default vector field representation. -velocity Render vector-valued fields as arrows using mayavi. COMPONENT EXTRACTION
-comp int Extract a component of a vector-valued field. OTHERS OPTIONS
-verbose print messages related to graphic files created and command system calls (this is the default). -noverbose does not print previous messages. -clean clear temporary graphic files (this is the default). -noclean does not clear temporary graphic files. -execute execute graphic command (this is the default). -noexecute does not execute graphic command. Generates only graphic files. This is usefull in conjuction with the -noclean command. FIELD FILE FORMAT
It contains a header and a list values at degrees of freedom. The header contains the field keyword followed by a line containing a format version number (presently 1), the number of degrees of freedom (i.e. the number of values listed), the mesh file name without the `.geo' extension the approximation (e.g. P1, P2, etc), and finaly the list of values: A sample field file (compatible with the sample mesh example presented in command manual; see geo(1)) writes: field 1 4 square P1 0.0 1.0 2.0 3.0 EXAMPLES
field cube.field -cut -normal 0 1 0 -origin 0.5 0.5 0.5 -vtk This command send to vtk the cutted 2d plane of the 3d field. field cube.field -cut -normal 0 1 0 -origin 0.5 0.5 0.5 -text > cube-cut.field This command generates the cutted 2d field and its associated mesh. field cube.field -iso 0.5 -plotmtv This command draws the isosurface. field cube.field -iso 0.5 -text > isosurf.geo This command generates the isosurface as a 3d surface mesh in `.geo' format. This is suitable for others treatments. INPUT FILE FORMAT OPTIONS
catchmark(4), geo(1) rheolef-6.1 rheolef-6.1 field(1rheolef)
Man Page