BLOCK

This procedure creates a matrix from the specified rectangular block of an input matrix.

Usage

The BLOCK stored procedure has the following syntax:
BLOCK(matrixIn,matrixOut,row_start,col_start,row_stop,col_stop)
Parameters
matrixIn
The name of the input matrix.
Type: NVARCHAR(ANY)
matrixOut
The name of the output matrix.
Type: NVARCHAR(ANY)
row_start
The first row of the input matrix to use.
Type: INT4
col_start
The first column of the input matrix to use.
Type: INT4
row_stop
The last row of the input matrix to use.
Type: INT4
col_stop
The last column of the input matrix to use.
Type: INT4
Returns
BOOLEAN TRUE, if successful.

Examples

CALL nzm..SHAPE('0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16',4,4,'A');
CALL nzm..BLOCK('A', 'B', 2, 2, 3, 3); 
CALL nzm..PRINT('A');
CALL nzm..PRINT('B');
CALL nzm..DELETE_MATRIX('A' );
CALL nzm..DELETE_MATRIX('B' );

 SHAPE
-------
 t
(1 row)

 BLOCK
-------
 t
(1 row)

                                PRINT
-------------------------------------------------------------------
 -- matrix: A --
0, 1, 2, 3
4, 5, 6, 7
8, 9, 10, 11
12, 13, 14, 15
(1 row)

           PRINT
----------------------------
 -- matrix: B --
5, 6
9, 10
(1 row)

 DELETE_MATRIX
---------------
 t
(1 row)

 DELETE_MATRIX
---------------
 t
(1 row)