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Trendline.Backward Property

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Excel Developer Reference

Returns or sets the number of periods (or units on a scatter chart) that the trendline extends backward. Read/write Long

Syntax

expression.Backward

expression   A variable that represents a Trendline object.

Example

This example sets the number of units that the trendline on Chart1 extends forward and backward. The example should be run on a 2-D column chart that contains a single series with a trendline.

Visual Basic for Applications 
  With Charts("Chart1").SeriesCollection(1).Trendlines(1)
    .Forward = 5
    .Backward = .5
End With