iorheo8rheolef

Small pieces of code

input geo in standard file format:

        cin >> g;

output geo in standard file format:

        cout << g;

output geo in gnuplot format:

        cout << gnuplot << g;

Overview

output manipulators enable the selection of some pretty graphic options, in an elegant fashion.

Boolean manipulators

The boolean manipulators set an internal optional flag. Each option has its negative counterpart, as verbose and noverbose, by adding the no prefix.

        cout << noverbose << a;

verbose

trace some details, such as loading, storing or unix command operations on cerr. Default is on.

clean

delete temporary files during graphic outputs. Default is on.

execute

run unix operations, such as gnuplot or plotmtv or vtk. Note that the corresponding files are created. Default is on.

transpose

perform transposition when loading/soring a csr matrix from Harwell-Boeing file. This feature is available, since the file format store matrix in transposed format. Default is off.

logscale

when using matrix sparse postscript plot manipulator ps and color. The color scale is related to a logarithmic scale.

fill

grid

shrink

tube

ball

full

stereo

cut

iso

split

when using the vtk or mayavi manipulators for a mesh or a field.

volume

volume rendering by using ray cast functions.

velocity

deformation

Vector-valued fields are rendered by using arrows (velocity) or deformed meshes (deformation). For vtk or plotmtv rendering.

elevation

Scalar valued fields in two dimension are rendered by using a tridimensionnal surface elevation. For vtk or plotmtv rendering.

fastfieldload

try to reuse the supplied space. Default is on.

File format manipulators

The format manipulator group applies for streams. Its value is an enumerated type, containing the following possibilities:

rheo

use the default textual input/output file format. For instance, this is `.geo' for meshes, `.field' for discretized functions. This default format is specified in the corresponding class documentation (see also geo(2) and field(2)). This is the default.

bamg

uses `.bamg' Frederic Hecht's bidimensional anisotropic mesh generator file format for geo input/output operation.

tetgen

uses `.node' `.ele' and .face Hang Si's tridimensional mesh generator file format for geo input/output operation.

mmg3d

uses `.mmg3d' Cecile Dobrzynski's tridimensional anisotropic mesh generator file format for geo input/output operation.

gmsh

uses `.gmsh' gmsh Christophe Geuzaine and Jean-Francois Remacle mesh generator file format for geo input/output operation.

gmsh_pos

uses `.gmsh_pos' gmsh Christophe Geuzaine and Jean-Francois Remacle mesh metric file format for geo adapt input/output operation.

grummp

uses `.m' (bidimensional) or `.v' (tridimensionnal) Carl Ollivier-Gooch 's mesh generator file format for geo input/output operation.

qmg

uses `.qmg' Stephen A. Vavasis's mesh generator file format for geo input/output operation.

vtkdata

uses `.vtk' mesh file format for geo input/output operations. This file format is suitable for graphic treatment.

vtkpolydata

uses `.vtk' polydata (specific for polygonal boundaries) mesh file format for geo input/output operations. This file format is suitable for graphic treatment.

cemagref

uses `.cemagref' surface mesh (topography, with a z cote). This file format is used at Cemagref (french research center for mountains, http://www.cemagref.fr).

dump

output an extensive listing of the class data structure. This option is used for debugging purpose.

hb

uses `.hb' Harwell-Boeing file format for sparse matrix input/output operation. This is the default.

matrix_market

uses `.mm' Matrix-Market file format for sparse matrix input/output operation.

ml

matlab

uses `.m' Matlab file format for sparse matrix output operation.

sparse_matlab

uses `.m' Matlab sparse file format for sparse matrix output operation.

ps

uses `.ps' postscript for sparse matrix output operation.

vtk

for mesh and field outputs. Generate `.vtk' data file and the `.tcl' command script file and run the vtk command on the `.tcl'.

mayavi

for field outputs. Generate `.vtk' data file and the `.py' command script file and run the python command on the `.py' associated to the mayavi/vtk library.

geomview

for boundary cad outputs. Generate `.off' data file and run the geomview command.

gnuplot

for mesh and field outputs. Generate `.gdat' data file and the `.plot' command script file and run the gnuplot command on the `.plot'.

plotmtv

for mesh and field outputs. Generate `.mtv' data file and run the plotmtv command.

x3d

for mesh output. Generate `.x3d' data file and run the x3d command. This tool has fast rotation rendering.

atom

for mesh output. Generate `.atom' data file and run the PlotM command. Tridimensional mesh rendering is performed as a chemical molecule: nodes as balls and edges as tubes. The PlotM tool is developed at Cornell University Laboratory of Atomic and Solid State Physics (LASSP) in a Joint Study with IBM, with support by the Materials Science Center and Corning Glassworks.

Color manipulators

The color manipulator group acts for sparse matrix postscript output. Its value is an enumerated type, containing three possibilities:

        cout << color << a;
        cout << gray  << b;
        cout << black_and_white  << c;

The default is to generate a color postcript file. Conversely, its act for field rendering, via mayavi.

Valuated manipulators

Some manipulators takes an argument that specifies a value.

        cout << geomview << bezieradapt << subdivide(5) << my_cad_boundary;
        cout << vtk << iso << isovalue(2.5) << my_mesh;
        cout << velocity << plotmtv << vectorscale(0.1) << uh;

See also catchmark(4) for input-output of vector-valued fields.

isovalue float

n_isovalue int

n_isovalue_negative int

vectorscale float

subdivide float

rounding_precision float

This manipulator set a rounding precision that could be used by some output functions, e.g. by the geo class. By default, the rounding value is zero and there is no rounding.

image_format string

The argument is any valid image format, such as png, jpg or pdf, that could be handled by the corresponding graphic render.