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Thread Subject:
How to solve five diagonal matrices?

Subject: How to solve five diagonal matrices?

From: William

Date: 31 Mar, 2012 15:52:12

Message: 1 of 4

Hi, anyone knows how to solve a five-diagonal matrices?

Subject: How to solve five diagonal matrices?

From: Matt J

Date: 31 Mar, 2012 18:33:19

Message: 2 of 4

"William" wrote in message <jl797c$665$1@newscl01ah.mathworks.com>...
> Hi, anyone knows how to solve a five-diagonal matrices?

Why not use backslash like any other matrix?

Subject: How to solve five diagonal matrices?

From: Roger Stafford

Date: 31 Mar, 2012 19:11:32

Message: 3 of 4

"William" wrote in message <jl797c$665$1@newscl01ah.mathworks.com>...
> Hi, anyone knows how to solve a five-diagonal matrices?
- - - - - - - - -
  Do a Google search using the word 'pentadiagonal'. For example, I see a Fortran routine at:

 http://www.math.uakron.edu/~kreider/anpde/penta.f

which purports to solve these. I have no idea how efficient it is.

Roger Stafford

Subject: How to solve five diagonal matrices?

From: Roger Stafford

Date: 31 Mar, 2012 19:34:32

Message: 4 of 4

"William" wrote in message <jl797c$665$1@newscl01ah.mathworks.com>...
> Hi, anyone knows how to solve a five-diagonal matrices?
- - - - - - - - - -
  I notice that Greg von Winckel placed a "Fast Pentadiagonal System Solver" in the Matlab File Exchange in 2004 at:

 http://www.mathworks.com/matlabcentral/fileexchange/4671

Roger Stafford

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