Adds another matrix to the current matrix.

Syntax

MatrixObject.PlusEquals MatrixToAdd

Parameters

MatrixToAdd

The matrix that you wish to add to current matrix.

Remarks

Both matrices must be of the same size (Rows and Cols properties must be equal).

Unlike the Plus Method, PlusEquals does not create a new matrix but instead adds to current matrix elements.

Error Codes

Error 1312 will be returned if the matrices are not of the same size.

Example

This example demonstrates the use of PlusEquals and MinusEquals methods.

Private Sub MatrixPlusMinusEquals()

Dim A As Matrix, B As Matrix

    Set A = New Matrix
    A.Size 5, 5
    A.FillRandom
    Debug.Print "A ="
    Debug.Print A.GetString(0)
    
    Set B = New Matrix
    B.Size 5, 5
    B.FillRandom
    Debug.Print "B ="
    Debug.Print B.GetString(0)
    
    A.PlusEquals B
    Debug.Print "A + B = "
    Debug.Print A.GetString(0)
    
    A.MinusEquals B
    Debug.Print "A - B = "
    Debug.Print A.GetString(0)
 
End Sub

Output

A =
|  6  2  8  6  5 |
|  4  9  8  7  2 |
|  9  7  5  3  0 |
|  1  4  1  2 10 |
|  4  1  0  0  4 |

B =
|  6  6  6  2  7 |
|  5  4  1  6  8 |
|  8  5  3  9  7 |
| 10  9  5  1  5 |
|  2  9  2  8  8 |

A + B = 
| 12  8 14  8 12 |
|  9 13  9 13 10 |
| 17 12  8 12  7 |
| 11 13  6  3 15 |
|  6 10  2  8 12 |

A - B = 
|  6  2  8  6  5 |
|  4  9  8  7  2 |
|  9  7  5  3  0 |
|  1  4  1  2 10 |
|  4  1  0  0  4 |

See Also

Plus Method | Minus Method | MinusEquals Method

Applies To: Matrix | CMatrix