IMsFormulaTransformSlices.Add

Syntax

Add(Selection: IDimSelectionSet): IMsFormulaTransformSlice;

Parameters

Selection. The selection, based of which the slice is made.

Description

The Add method creates a variable slice. The selection, based of which the slice is made, is passed by the Selection parameter.

Example

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(NullAs IDimInstance);
        Selection.Item(i).SelectElement(3False);
    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(NullAs IDimInstance);
        Selection.Item(i).DeselectAll;
        Selection.Item(i).SelectElement(1False);
    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(3False);
    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:

IMsFormulaTransformSlices