NAME

       bamg - bidimensional anisotropic mesh generator

SYNOPSIS

         bamg options -g input[.bamgcad] -o ouput[.bamg]

EXAMPLE

         bamg -g toto.bamgcad -o toto.bamg

OUTLINE OF THE COMMANDS

        This software can

       create a mesh from a geometry

       adapt  a mesh from a background mesh using a metric or solution file

       do smoothing
              to  make  quadrilaterals  and to split internal edge with 2 boundary vertices in an
              existing mesh (in this case the metric is use  to  change  the  definition  of  the
              element's quality).

       construct
              just a metric file, if you have an other mesher

       do the P1 interpolation
              of the solution on another mesh:

CREATE A MESH FROM A GEOMETRY

       input  file with -g filename (file type DB mesh).

       output file arguments -oxxxx filename where xxxx is the type of output file (see below for
              more details).

       smoothing, quad, utility and other parameters.
              In addition, metric specication may be prescribed with  the  help  of  -M  filename
              argument (file type Metric).  All the options are described below.

ADAPT A MESH FROM A BACKGROUND MESH USING A METRIC OR SOLUTION FILE

       input  files  -b  filename  where  the  suffixe  of  the  file define the type of the file
              `.amdba', `.am_fmt', `.am', `.ftq', `.nopo' and otherwise the file  is  a  BD  mesh
              file.

       input  `-M  filename'  (file type Metric) or -MBB filename or -Mbb filename (solution file
              type BB or bb).

       metric control parameters, -err val, -errg val,....

       output file arguments reqired

       interpolation, smoothing, quad,
              utility parameter, and other parameter do smoothing, to make quadrilaterals: and to
              split  internal edge with 2 boundary vertices in an existing mesh (in this case the
              metric is use to change the definition of the element's quality).

       input  files -r filename(file type DB mesh).

       -M filename
              (file type Metric).

       output file -o filename (file type DB mesh).

SOME OTHER PARAMETER RELATED TO QUADRILATERALS

       -thetaquad val:
              to create quad with 2 triangles

       -2:    to create the submesh with mesh size h = h/2

       -2q:   to split all triangles in 3 quad. and to split all quad. in 4 quad.

       -NbSmooth ival:
              to change the number of smoothing iteration (3 by default if the metric eld is  set
              with arguments : -M or -Mbb, 0 otherwise.

       ...

CONSTRUCT JUST A METRIC FILE

       e.g. if you have an other mesher:

       input  files -r filename (file type DB mesh).

       --Mbb filename
              or -MBB filename

       + all the arguments
              of the metric construction

       output file  -oM filename  (file type Metric).  do the P1 interpolation of the solution on
              another mesh:

       input  files -r filename (file type DB mesh).

       --rBB filename
              or -rbb filename

       output file -wBB filename or -wbb filename

METRIC COMPUTATIOB OPTIONS

       These options are relevant when computing a metric from a scalar field provided in  a  .bb
       file.  Notice that, when providing a tensor metric in the .bb file, the metric computation
       is not performed and these options are not relevent.

       -RelError
              compute the metric with a relative error. This is the default.

       -CutOff float
              the cut-off value used for the relative error criteria.  Default value is 1e-5.

       -AbsError
              compute the metric with a relative error