Overload List
| # | Signature | Description |
|---|---|---|
| 1 | function Mean: Double; | Mean value. |
| └ indexed: function Mean(Index: Integer; Len: Integer): Double; | ||
| 2 | procedure Mean(out AMean: Double; Index: Integer; Len: Integer); | Calculate the mean value from calling object elements [Index]..[Index+Len-1]. |
Overload 1: function Mean: Double;
Mean value.
Returns: Double
Remarks:
Calculate the mean value of all calling object elements. The result is a real value. An exception is raised if calling object Matrix.Complex property is true.
Examples
var a: Matrix;
b: double;
begin
a.SetIt(4,1,False,[1,2,3,4]);
b := a.Mean; // b = 2.5
end;var
a: Matrix;
result: double;
begin
a := [[1.0, 2.0], [3.0, 4.0]];
result := a.Mean;
if Abs(result - 2.5) > 1e-10 then
raise Exception.Create('Matrix.Mean: expected 2.5, got ' + result.ToString);
end;See Also: Matrix.Sum, Matrix.Meanc
Indexed: function Mean(Index: Integer; Len: Integer): Double;
Returns real mean value from calling object elements [Index]..[Index+Len-1].
| # | Name | Type | Description |
|---|---|---|---|
| 1 | Index | Integer | start index |
| 2 | Len | Integer | element count |
Returns: Double
Remarks:
An exception is raised if calling object Matrix.Complex property is true or array borders are overrun.
Overload 2: procedure Mean(out AMean: Double; Index: Integer; Len: Integer);
Calculate the mean value from calling object elements [Index]..[Index+Len-1].
| # | Name | Type | Description |
|---|---|---|---|
| 1 | AMean | Double | pre-computed mean |
| 2 | Index | Integer | start index |
| 3 | Len | Integer | element count |
Result: stored in self (calling object)
Remarks:
The result AMean is a real value. An exception is raised if calling object Matrix.Complex property is true or array borders are overrun/underrun.