The sgridmerge utility provides a tool to merge two or more surface grids together into a single composited surface grid.  sgridmerge resolves the connectivity issues along the edges of the constituent grids, such that the final output grid is a valid unstructured surface mesh.
 

-ngrid [#]

Specifies the number of input grids to be merged.  Upon execution, the user will be prompted for the grid names to be merged.

-ogrid [file_name]

Specifies the output grid file name

-abs_tol

Use absolute tolerancing to find matching nodes between grids instead of local tolerancing.  This method is much faster but less reliable.  [Default]

-rel_tol

Use local or relative tolerancing instead of absolute tolerancing to find matching nodes between grids.

-tolerance [#]

Specifies the maximum distance between two points such that they are considered as matching between constituent grids.  For relative tolerancing, the tolerance is specified as a percent edge length (i.e. 1% is 0.01).  The default value is 1.0e-8.

-brute

Use brute force method for tolerancing algorithm where each boundary point (i.e. a point on a free edge) is checked against all other boundary points.

-cat	Do not attempt to merge grid points; instead, simply concatenate the grids together.

-renum_tag

Renumber the input surface tags such that each surface ID is guaranteed to be unique.  The default behavior is to retain the surface ID's of the constituent grids in the final merged grid.

-debug

Prints extra debugging information.

-printrejects

Prints node ids for boundary nodes that were not merged and creates a new group for all boundary faces that have free edges.

-verbose

Prints additional information about merged nodes.

-help

Prints the help screen.

-version

Prints the version information of the executable and the associated libraries

-build

Prints the build number of the executable