Round(Input: Variant; Precision: Variant): Variant;
Input. Variable.
Precision. The number of decimal places, to which a number should be rounded.
The Round method rounds off variable points values.
Features of setting working the Precision parameter:
If the parameter value is greater than 0, the number is rounded to the specified number of decimal places after a decimal point.
If the parameter value is equal to 0, the number is rounded to the nearest integer.
If the parameter value is less than 0, the number is rounded to the left of the decimal point.
Executing the example requires that the repository contains a modeling container with the MS identifier. This container includes a model with the MODEL_D identifier that is calculated by the determinate equation method and contains at least one input variable.
Add links to the Metabase and Ms system assemblies.
Sub UserNvl;
Var
Mb: IMetabase;
ModelSpace, ModelObj: IMetabaseObject;
Transf: IMsFormulaTransform;
Formula: IMsFormula;
Model: IMsModel;
Determ: IMsDeterministicTransform;
TransVar: IMsFormulaTransformVariable;
Slice: IMsFormulaTransformSlice;
TermInfo: IMsFormulaTermInfo;
Expr: IExpression;
Begin
// Get repository
Mb := MetabaseClass.Active;
// Get modeling container
ModelSpace := Mb.ItemById("MS").Bind;
// Get model
ModelObj := Mb.ItemByIdNamespace("MODEL_D", ModelSpace.Key).Edit;
Model := ModelObj As IMsModel;
// Get model calculation parameters
Transf := Model.Transform;
Formula := Transf.FormulaItem(0);
Determ := Formula.Method As IMsDeterministicTransform;
// Get the first input variable
TransVar := Transf.Inputs.Item(0);
Slice := TransVar.Slices.Item(0);
TermInfo := Transf.CreateTermInfo;
TermInfo.Slice := Slice;
// Set mode of passing variable into calculation
TermInfo.Type := MsFormulaTermType.Pointwise;
// Get model calculation expression
Expr := Determ.Expression;
Expr.References := "Ms";
// Set model calculation expression
Expr.AsString := "Round(" + TermInfo.TermInnerText + ", 2)";
// Check if the expression is correct
If Expr.Valid
// If the expression is set correctly, save the model
Then ModelObj.Save;
// If the expression is incorrect, display a message to the console window
Else Debug.WriteLine("Model is not saved: error in the formula");
End If;
End Sub UserNvl;
After executing the example the model rounds the first input variable points to two decimal places.
Expression 1:
Round({Brazil|BCA},2)
Result: Brazil|BCA factor observations are rounded to two decimal places.
Use: it can be used in formulas of cross functional expression editor in any platform tool where it is available.
Expression 2:
Round(X1,0)
Result: X1 factor points are rounded to the nearest integer.
Use: it can be used in model formulas of modeling container.
Expression 3:
Round(5.978,2)
Result: 5.98.
Application: it can be used in any expressions.
See also: