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- Newsgroups: comp.lang.pascal
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!menudo.uh.edu!cl2.cl.uh.edu!csci11ba
- From: csci11ba@cl2.cl.uh.edu (451924952 NEWMAN, DANA FRANK)
- Subject: Re: Sparse matrices
- Message-ID: <22JUL199200543248@cl2.cl.uh.edu>
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- Organization: University of Houston - Clear Lake
- References: <1992Jul20.042405.6954@usenet.ins.cwru.edu>
- Date: Wed, 22 Jul 1992 06:54:00 GMT
- Lines: 17
-
- In article <1992Jul20.042405.6954@usenet.ins.cwru.edu>, wct@po.CWRU.Edu (William C. Thompson) writes...
- >
- >Does anyone know how to implement sparse matrices? From my understanding,
- >spreadsheet programs like Lotus 123, etc. use sparse matrices to store
- >all of cells. A sparse matrix is then essentially a matrix, but some
- >element may not exist, and should therefore not occupy any space in
- >memory.
-
- 1. Try implementing it using an LU decomposition.
-
- 2. There is a good text in "W. Weaver and J. Gere, Matrix Analysis of Framed
- Structures, D. Van Nostrand."
-
- 3. Or, look in any Linear Algebra Textbook.
-
- I realize thats not a real answer, but it might get you started on a "roll yer
- own"
-