Backward property (Excel Graph)
Returns or sets the number of periods (or units on a scatter chart) that the trendline extends backward. Read/write Long.
expression.Backward
expression Required. An expression that returns a Trendline object.
This example sets the number of units that the trendline extends forward and backward. The example should be run on a 2D column chart that contains a single series with a trendline.
With myChart.SeriesCollection(1).Trendlines(1)
.Forward = 5
.Backward = .5
End With
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