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Data Smoothing Commands
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The Statistics package provides various data smoothing functions. The following is a list of available commands.
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Examples
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Create 100 points on the curve  and add some random noise.
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![U := RTABLE(18446790986270129438, float[8], Vector[row], rectangular, Fortran_order, [], 1, 1 .. 100)](/support/helpjp/helpview.aspx?si=7305/file02851/math90.png)
| (1) |
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![V := `<,>`(seq(sin((1/10)*Pi*i)+U[i], i = 1 .. 100))](/support/helpjp/helpview.aspx?si=7305/file02851/math94.png)
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](/support/helpjp/helpview.aspx?si=7305/file02851/math106.png)
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Compute 5-element moving averages.
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![W := RTABLE(18446790986281142262, float[8], Vector[column], rectangular, Fortran_order, [], 1, 1 .. 96)](/support/helpjp/helpview.aspx?si=7305/file02851/math120.png)
| (2) |
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![R := LineChart(W, xcoords = [seq(i, i = 2 .. 98)], thickness = 3)](/support/helpjp/helpview.aspx?si=7305/file02851/math124.png)
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](/support/helpjp/helpview.aspx?si=7305/file02851/math128.png)
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Apply exponential smoothing.
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![U1 := RTABLE(18446790986281136366, float[8], Vector[column], rectangular, Fortran_order, [], 1, 1 .. 100)](/support/helpjp/helpview.aspx?si=7305/file02851/math142.png)
| (3) |
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![U2 := RTABLE(18446790986281137326, float[8], Vector[column], rectangular, Fortran_order, [], 1, 1 .. 100)](/support/helpjp/helpview.aspx?si=7305/file02851/math149.png)
| (4) |
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![R := LineChart([U1, U2], color = [red, blue], thickness = 3)](/support/helpjp/helpview.aspx?si=7305/file02851/math153.png)
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](/support/helpjp/helpview.aspx?si=7305/file02851/math157.png)
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Use lowess smoothing.
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](/support/helpjp/helpview.aspx?si=7305/file02851/math176.png)
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