spdiags

Creates a sparse representation of multiple diagonal matrix

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

spdiags function

<dl><dt>A</dt>
<dd>matrix where columns correspond to the desired diagonals</dd>
<dt>d</dt>
<dd>indices of the diagonals to be filled in. 0 is main diagonal. -1
is first subdiagonal and +1 is first superdiagonal.</dd>
<dt>m</dt>
<dd>row dim</dd>
<dt>n</dt>
<dd>col dim</dd></dl>

Arguments

Create sparse diagonal matrix — spdiags

<dl>

<dt>A</dt>
<dd>matrix where columns correspond to the desired diagonals</dd>


<dt>d</dt>
<dd>indices of the diagonals to be filled in. 0 is main diagonal. -1
is first subdiagonal and +1 is first superdiagonal.</dd>


<dt>m</dt>
<dd>row dim</dd>


<dt>n</dt>
<dd>col dim</dd>

</dl>

spdiags: Create sparse diagonal matrix

Description

Usage

Value

Arguments