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Vandermonde matrix

by Siqing Wu

29 Jul 2008 (Updated 30 Jul 2008)

No BSD License

Creating matrix with terms of geometric progression in each row

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Description

Creates Vandermonde matrix with terms of geometric progression in each row.

It is an extended version of the Matlab function "vander.m".

MATLAB release

MATLAB 7.4 (R2007a)

Tags for This File
Everyone's Tags	geometric progression, linear algebra, mathematics, vandermonde matrix
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Comments and Ratings (1)
10 Dec 2008	Tim Davis	You should clarify in your help information that the matrix produced has its columns listed in the opposite order of the vander.m function in MATLAB. Also, providing the determinant is nice, but it would be better to return the log or log10 of the determinant. That way, you can deal with determinants that are very large and very small (it's quite easy for det(A) to underflow or overflow). Otherwise, nice work, and nicely commented. (You should have a "see also vander" line, though). Nice use of cumprod. I'm surpised that this function is slower than vander, though.

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Tag Activity for this File
Tag	Applied By	Date/Time
linear algebra	Siqing Wu	22 Oct 2008 10:12:18
vandermonde matrix	Siqing Wu	22 Oct 2008 10:12:18
geometric progression	Siqing Wu	22 Oct 2008 10:12:18
mathematics	Siqing Wu	22 Oct 2008 10:12:18

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