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Using TMatrix 

The classes TMatrix, TIntMatrix and TMat3D provide containers for a two and threedimensional matrix of integer and floating point numbers (of type double) and the corresponding methods to manipulate this matrix. The methods of TMatrix provide only the most fundamental routines for handling such matrices. More elaborate mathematical methods are contained in the unit MATH2. In addition some other units (e.g. the Kohonen network) are based on matrices. The indices of a matrix of the class TMatrix are counted starting at 1 up to NrOfRows, or NrOfColumns respectively. In order to use TMatrix the user has first to create one or several matrices (instances of class TMatrix ) by calling the method Create. If a matrix is not needed anymore, it should be removed from the memory by calling the methods Destroy or (preferably) Free. The single elements of a matrix are represented by the property Elem. Most of the matrix operations are available via methods. The following code snippet shows a very simple sample application: a square matrix (Mat1) of 27 elements is created and filled with a constant value for the diagonal elements of 1.0, with all other elements being set to zero values. At the end of the program the matrix is destroyed.
const MatCols = 40; { size of the matrix } MatRows = 27; var Mat1 : TMatrix; begin Mat1 := TMatrix.Create (nil); Mat1.Resize (MatCols, MatRows); { here comes your code to process the matrix Mat1 } Mat1.Free; end;
