compar

For <code>k=0</code>, if <code>i==j</code>, $A[i,j]=abs(B[i,j])$ and
 <code>A[i,j]=-abs(B[i,j])</code> otherwise. For <code>k=1</code>, <code>A</code> replaces each
 diagonal element of <code>B</code> with its absolute value, and replaces each
 off-diagonal with the negative of the largest absolute value off-diagonal
 in the same row.

Generates a variety of structured test matrices commonly used in numerical linear algebra and computational experiments. Includes well-known matrices for benchmarking and testing the performance, stability, and accuracy of linear algebra algorithms. Inspired by 'MATLAB' 'gallery' functions.

Thomas Hsiao

gallery

Generate Test Matrices for Numerical Experiments

compar function

<dl><dt>B</dt>
<dd>input matrix</dd>
<dt>k</dt>
<dd>decides what matrix to return</dd></dl>

Arguments

Create comparison matrix A — compar

<dl>

<dt>B</dt>
<dd>input matrix</dd>


<dt>k</dt>
<dd>decides what matrix to return</dd>

</dl>

compar: Create comparison matrix `A`

Description

Usage

Value

Arguments