FittingModelCollection.AddCurve Method (DataTable, String)

FittingModelCollection AddCurve Method (DataTable, String)

TIBCO Spotfire 6.0 API Reference

Adds a curve. The curve is defined by the specified expression, for example "a + b*x", where a and b are columns in the specified data table.

Namespace: Spotfire.Dxp.Application.Visuals.FittingModels
Assembly: Spotfire.Dxp.Application (in Spotfire.Dxp.Application.dll) Version: 13.19.7018.3940 (13.19.7018.3940)

Syntax

C++

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public ReferenceCurveFittingModel AddCurve(
	DataTable dataTable,
	string expression
)

public ReferenceCurveFittingModel AddCurve(
	DataTable dataTable,
	string expression
)

Parameters

dataTable: Type: Spotfire.Dxp.Data DataTable
The data table. May be null.

expression: Type: System String
The expression defining the curve.

Return Value

Type: ReferenceCurveFittingModel
A ReferenceCurveFittingModel.

Exceptions

Exception	Condition
System ArgumentNullException	Thrown if the expression is null.

Remarks

As of version 3.3, any columns to be used for labels and tooltips must be specified by the DataTableDetailItemsExpression property.

Examples

The following example shows how to add a curve with an expression containing columns in another table.

C++

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ScatterPlot plot = ...;
DataTable dataTable = ...;
ReferenceCurveFittingModel curve = plot.FittingModels.AddCurve(dataTable, "[a] + [b] * x");

ScatterPlot plot = ...;
DataTable dataTable = ...;
ReferenceCurveFittingModel curve = plot.FittingModels.AddCurve(dataTable, "[a] + [b] * x");