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### Transporting Mathematica Files to Geomview by Hand

The auxilliary function `WriteChunk` is for those who can only use Mathematica on a computer that Geomview isn't installed on. `WriteChunk[file, graphics]` generates a file named file which contains the graphics object graphics in the format accepted by ``math2oogl'`.

You can transfer that file to a computer that has Geomview installed on it and then use the programs ``math2oogl'`, ``oogl2ri'`b, and ``geomview'` directly from the shell. These programs are distributed in the ``bin/<CPU>'` subdirectory of the Geomview directory, and may have been installed so that they are on your `path`.

    In[1]:= <<OOGL.m

    In[2]:= Plot3D[ Sin[x + Sin[y]], {x,-2,2}, {y,-2,2} ]

    Out[2]= -SurfaceGraphics-

    In[3]:= WriteChunk["mychunk",%2]

This writes the file ``mychunk'` which contains a description of the graphics object. You can then transfer this file to a system with Geomview and type

    math2oogl < mychunk > mma.oogl

to convert it to the OOGL file ``mma.oogl'` which you can then view using Geomview. This is the equivalent of the `WriteOOGL` command.

For a result equivalent to the `Geomview` or `Show` commands, type

    math2oogl -togeomview Mathematica geomview < mychunk

The `WriteRI`b command can be emulated from the shell as

    math2oogl < mychunk | oogl2rib -n mma.tiff

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