IModelling.AbsI

Fore Syntax

AbsI(Input: Variant): Variant;

Fore.NET Syntax

AbsI(Input: object; Context: Prognoz.Platform.Interop.Fore.ForeRuntimeContext): object;

Parameters

Input. Variable.

Context. Context. The parameter is used only in Fore.NET.

Description

The AbsI method returns absolute value (modulus) of selected variable points if this variable contains only integer values.

Comments

Use the IModelling.Abs method to calculate points module of the variable containing not only integer values.

Fore Example

Executing the example requires that the repository contains a modeling container with the MS identifier. A model with the MODEL_D identifier calculated by the method of determinate equation and containing at least one input variable must be available in this container.

Add links to the Metabase, Ms system assemblies.

Sub UserAbsI;
Var
    Mb: IMetabase;
    ModelSpace, ModelObj: IMetabaseObject;
    Transf: IMsFormulaTransform;
    Formula: IMsFormula;
    Model: IMsModel;
    Determ: IMsDeterministicTransform;
    TransVar: IMsFormulaTransformVariable;
    Slice: IMsFormulaTransformSlice;
    TermInfo: IMsFormulaTermInfo;
    Expr: IExpression;
Begin
    Mb := MetabaseClass.Active;
    ModelSpace := Mb.ItemById("MS").Bind;
    ModelObj := Mb.ItemByIdNamespace("MODEL_D", ModelSpace.Key).Edit;
    Model := ModelObj As IMsModel;
    Transf := Model.Transform;
    Formula := Transf.FormulaItem(0);
    Determ := Formula.Method As IMsDeterministicTransform;
    TransVar := Transf.Inputs.Item(0);
    Slice := TransVar.Slices.Item(0);
    TermInfo := Transf.CreateTermInfo;
    TermInfo.Slice := Slice;
    Expr := Determ.Expression;
    Expr.References := "Ms";
    Expr.AsString := "AbsI(" + TermInfo.TermInnerText + ")";
    If Expr.Valid
         Then ModelObj.Save;
        Else Debug.WriteLine(Model is not saved: error in formula);
    End If;
End Sub UserAbsI;

After executing the example the model calculates the absolute value (modulus) of points of the first input variable if it contains only integer values.

Fore.NET Example

The requirements and result of the Fore.NET example execution match with those in the Fore example.

Imports Prognoz.Platform.Interop.ForeSystem;
Imports Prognoz.Platform.Interop.Ms;
…
Public Shared Sub Main(Params: StartParams);
Var
    Mb: IMetabase;
    ModelSpace, ModelObj: IMetabaseObject;
    Transf: IMsFormulaTransform;
    Formula: IMsFormula;
    Model: IMsModel;
    Determ: IMsDeterministicTransform;
    TransVar: IMsFormulaTransformVariable;
    Slice: IMsFormulaTransformSlice;
    TermInfo: IMsFormulaTermInfo;
    Expr: IExpression;
Begin
    Mb := Params.Metabase;
    ModelSpace := Mb.ItemById["MS"].Bind();
    ModelObj := Mb.ItemByIdNamespace["MODEL_D", ModelSpace.Key].Edit();
    Model := ModelObj As IMsModel;
    Transf := Model.Transform;
    Formula := Transf.FormulaItem[0];
    Determ := Formula.Method As IMsDeterministicTransform;
    TransVar := Transf.Inputs.Item[0];
    Slice := TransVar.Slices.Item[0];
    TermInfo := Transf.CreateTermInfo();
    TermInfo.Slice := Slice;
    Expr := Determ.Expression;
    Expr.References := "Ms";
    Expr.AsString := "AbsI(" + TermInfo.TermInnerText + ")";
    If Expr.Valid
        Then ModelObj.Save();
        Else System.Diagnostics.Debug.WriteLine("Model is not saved: error in formulaquot;);
    End If;
End Sub;

Example of Use in Expressions

Expression 1:

AbsI({Brazil|BCA})

Result: absolute value is calculated for each observation of the Brazil|BCA time series.An error occurs if the factor contains real values.

Use: it can be used in formulas of calculated series of time series database and model formulas of modeling container that is a child of the time series database.

Expression 2:

AbsI(X1)

Result: for each factor point X1 the absolute value is calculated.

Use: it can be used in model formulas of modeling container.

Expression 3:

AbsI(-7)

Result: 7.

Use: it can be used in formulas of calculated series of time series database and modeling container models.