SolidMesh Grid Tools: extract

The extract utility provides a tool to extract elements from a volume grid based on id, topology type, or angle criteria.  The complete surface grid is always written to the output grid file.
 

  • -igrid [file_name]
    		• Specifies the input grid file name
  • -ogrid [file_name]
    		• Specifies the output grid file name.  If no output grid is specified, the default output file casename_out.b8.ugrid will be generated if necessary.
  • -globalminmax [#]
    		• Prints the global minimum and maximum angles in the grid.
  • -min [#]
    		• Writes all volume elements with angles less than the specified min value to the output grid file.  May be used with -max option.
  • -max [#]
    		• Writes all volume elements with angles less than the specified max value to the output grid file.  May be used with -min option.
  • -negvol
    		• Writes all elements having negative volumes to the specified file.
  • -tet [RANGE] or [all]
    		• Writes tetrahedra within the specified RANGE to the output grid file.
  • -pent5 [RANGE] or [all]
    		• Writes pyramids within the specified RANGE to the output grid file.
  • -pent6 [RANGE] or [all]
    		• Writes prisms within the specified RANGE to the output grid file.
  • -hex [RANGE] or [all]
    		• Writes hexehedra within the specified RANGE to the output grid file.
  • -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

    RANGE is specified as START VALUE .. END VALUE using a 1-based numbering or all to extract every element of that type.  For example, to extract the first 100 tetrahedra:
    % extract -igrid input_grid_file -tet 1..100 -ogrid output_grid_file

    Options listed in red are mandatory.

     

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