ejml 0.33 How to normalize a matrix and find its pivots?

[Stephen Kong]

I just got ejml 0.33. But I am having problem doing even the most basic operations

1. How to normalize a matrix (ZMatrixRMaj or DMatrixRMaj) into a unit matrix?

2. How to find pivots of a matrix?

3. Any API's or code sample that helps calculating Fourier Fast Transformation (FFT)? 

[Peter A]

Hi Stephen,

1) Can you clarify what you mean by unit matrix? Unit matrix can have different definitions depending on the problem you're tackling. Do you mean A*inv(A) = I ?

2) The LUDecomposition interface provides access to the pivots in LU decomposition. Other interfaces specific to a decomposition provide their respective pivots. To create an LUDecomposition use the DecompositionFactory_DDRM.

3) No example code for FFT. If you know of a concise enough algorithm I'll add one!

Just updated the page on matrix decomposition. It now mentions how to access information like pivots.

https://ejml.org/wiki/index.php?title=Matrix_Decompositions

Thanks,

- Peter

--
You received this message because you are subscribed to the Google Groups "efficient-java-matrix-library-discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to efficient-java-matrix-library-discuss+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--

"Now, now my good man, this is no time for making enemies."    — Voltaire (1694-1778), on his deathbed in response to a priest asking that he renounce Satan.