Add(Selection: IDimSelectionSet): IMsFormulaTransformSlice;
Selection. The selection, based of which the slice is made.
The Add method creates a variable slice. The selection, based of which the slice is made, is passed by the Selection parameter.
Executing the example requires a modeling container with two variables that have additional dimensions.
Sub UserProc;
Var
MB: IMetabase;
CrInf: IMetabaseObjectCreateInfo;
MObj: IMetabaseObject;
Model: IMsModel;
Trans: IMsFormulaTransform;
VarTrans: IMsFormulaTransformVariable;
Slice, Slice1: IMsFormulaTransformSlice;
Selector: IMsFormulaTransformSelector;
Formula: IMsFormula;
NonLinear: IMsNonLinearRegressionTransform;
Varr: IMsVariable;
TransVar: IMsFormulaTransformVariable;
TermX1, TermX2: IMsFormulaTerm;
TermInfo1, TermInfo2: IMsFormulaTermInfo;
SelectionFact: IDimSelectionSetFactory;
Selection: IDimSelectionSet;
s: String;
i: Integer;
Begin
MB := MetabaseClass.Active;
//create a model
CrInf := Mb.CreateCreateInfo;
CrInf.ClassId := MetabaseObjectClass.KE_CLASS_MSMODEL;
CrInf.Id := "New_NonLinReg";
CrInf.Name := "New_NonLinReg";
CrInf.Parent := Mb.ItemById("KONT_MODEL");
CrInf.Permanent := False;
MObj := Mb.CreateObject(CrInf).Edit;
Model := MObj As IMsModel;
Trans := Model.Transform;
// add a modeling variable
Varr := MB.ItemByIdNamespace("Var_1", MB.ItemById("KONT_MODEL").Key).Bind As IMsVariable;
Trans.Outputs.Add(Varr As IMsVariableStub);
//create an empty selection
SelectionFact := New DimSelectionSetFactory.Create;
Selection := SelectionFact.CreateDimSelectionSet;
//if output variable contains additional dimensions, select element with the 3 index in them
For i := 0 To Varr.Dimensions.Count - 1 Do
Selection.Add((Varr.Dimensions.Item(i).Model As IMetabaseObject).Open(Null) As IDimInstance);
Selection.Item(i).SelectElement(3, False);
End For;
VarTrans := Trans.Outputs.Item(0);
//get slice in output variable
Slice := VarTrans.Slices.Add(Selection);
Selector := Model.Transform.CreateSelector;
Selector.Slice := Slice;
Formula := Model.Transform.Transform(Selector);
Formula.Kind := MsFormulaKind.NonLinearRegression;
NonLinear := Formula.Method As IMsNonLinearRegressionTransform;
// add an output variable
Varr := MB.ItemByIdNamespace("Var_Factor", MB.ItemById("KONT_MODEL").Key).Bind As IMsVariable;
Trans.Inputs.Add(Varr As IMsVariableStub);
TransVar := Model.Transform.Inputs.Item(0);
//fix selection by all additional dimensions
For i := 0 To Varr.Dimensions.Count - 1 Do
Selection.Add((Varr.Dimensions.Item(i).Model As IMetabaseObject).Open(Null) As IDimInstance);
Selection.Item(i).DeselectAll;
Selection.Item(i).SelectElement(1, False);
End For;
//add a slice to variable
Slice := TransVar.Slices.Add(Selection);
//create selection for the second slice
For i := 0 To Varr.Dimensions.Count - 1 Do
Selection.Item(i).DeselectAll;
Selection.Item(i).SelectElement(3, False);
End For;
//add the second slice to variable
Slice1 := TransVar.Slices.Add(Selection);
//create two terms by different slices in variable
TermX1 := NonLinear.Operands.Add(Slice);
TermX2 := NonLinear.Operands.Add(Slice1);
//create an equation
TermInfo1 := TermX1.TermInfo;
TermInfo1.Slice := Slice;
TermInfo2 := TermX2.TermInfo;
TermInfo2.Slice := Slice1;
s := "A0+" + TermX1.TermToInnerText + "/10+ " + TermX2.TermToInnerText;
NonLinear.Expression.AsString := s;
MObj.Save;
End Sub UserProc;
After executing the example a model is created in the modeling container. An output variable is added to the model; elements with the 3 index are selected in all additional dimensions of this variable. Specification of calculation is adjusted for the received slice. The method of non-linear regression is used for calculation. A variable with some elements fixed in additional dimensions is added to the list of input variables. Then, the expression elements are obtained, and equation is composed.
See also: