Re: I need a 4D (may be 5D or 6D) data space

Don't think of rows/cols as two dimensions. Here's a MySQL table that looks up descriptions in a two-dimensional space. It should be obvious how to extend it to an arbitrary number of dimensions.

CREATE TABLE IF NOT EXISTS brlewis_map (

        x integer NOT NULL,
        y integer NOT NULL,
        descr varchar (255) NOT NULL,
        PRIMARY KEY (x, y))

One of the demos at
  http://www.webappcabaret.com/brl/p/brlewis/index.brl uses this exact table.

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