Description of DiagonalMatrix

DiagonalMatrix		Programmers Guide
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Category:containers

Component type:concept

Description

A diagonal matrix is quite different from the normal MTL Matrix. Instead of the OneD parts of the Matrix being Rows or Columns, the OneD parts of this Matrix are diagonals of the matrix. The below example shows a piece of code that uses the iterators of a diagonal matrix to fill up the matrix with incrementing numbers. The matrix depicted below is the result of the code applied to a diagonal matrix. The iterators traverse along the diagonals of the Matrix instead of the rows or columns.

 int c = 0;
 typename Matrix::const_iterator i;
 typename Matrix::OneD::const_iterator j;
 for (i = A.begin(); i != A.end(); i) {
   for ( j = (*i).begin(); j != (*i).end(); j) {
      c = c + 1;
      *j = c;
   }
 }

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Refinement of

Associated types

Concept	Type name	Description
`Vector`	`X::Diagonal`	Diagonal type, same as Matrix::OneD

Notations

Definitions

Expression semantics

Description	Expression	Semantics

Function specification

Name	Function	Complexity

Invariants

Models

diagonal_matrix

Notes

See also