MagicPlot Manual

Plotting and nonlinear fitting software

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smoothing [Mon Jun 3 11:48:16 2013]
Alexander
smoothing [Thu Jan 14 17:13:38 2021] (current)
Alexander
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-====== Smoothing (Pro edition only) =====+====== Smoothing =====
 Open Table or Figure or Fit Plot with initial data and select ''Processing -> Smooth'' menu item. The opened processing dialog shows parameters, initial curves (semi-transparent) and smoothed preview. Open Table or Figure or Fit Plot with initial data and select ''Processing -> Smooth'' menu item. The opened processing dialog shows parameters, initial curves (semi-transparent) and smoothed preview.
  
 {{:smoothing.png?nolink|Smoothing dialog}} {{:smoothing.png?nolink|Smoothing dialog}}
 +
 +===== Parameters =====
 +
 +''Periodic'' checkbox applies on calculation of first and last //p/2// points. When it is set MagicPlot will take missing values from the opposite end (as if the signal is periodic) to calculate first and last //p/2// points.
  
 ===== Algorithms ===== ===== Algorithms =====
  
 Two algorithms are available: Central Moving Average and [[wp>Savitzky–Golay_smoothing_filter|Savitzky-Golay method]]. Two algorithms are available: Central Moving Average and [[wp>Savitzky–Golay_smoothing_filter|Savitzky-Golay method]].
- 
-''Periodic'' checkbox applies on first and last //p/2// points calculation. When is is set MagicPlot will take missing values from the opposite end (as if the signal is periodic) to calculate first and last //p/2// points. 
  
 ==== Central Moving Average ==== ==== Central Moving Average ====
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 Each value //A<sub>k</sub>// is replaced with //p//-points average: Each value //A<sub>k</sub>// is replaced with //p//-points average:
  
-<m>A_k = sum{i=k−{p{/}2}}{k+p{/}2}{a_i}</m>.+<m>A_k = 1/p sum{i=k−{p{/}2}}{k+p{/}2}{a_i}</m>.
  
 If ''Periodic'' checkbox is not set the first and last //p/2// points are calculated with the same symmetrical formula but with less summands. If ''Periodic'' checkbox is not set the first and last //p/2// points are calculated with the same symmetrical formula but with less summands.
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 If ''Periodic'' checkbox is not set, MagicPlot will repeat the values of the first and last points to calculate a polynomial for the first and last //p/2// points. If ''Periodic'' checkbox is not set, MagicPlot will repeat the values of the first and last points to calculate a polynomial for the first and last //p/2// points.
 +
 +===== See Also =====
 +  * [[processing]]
  
  
smoothing.1370245696.txt.gz · Last modified: Sun Nov 8 12:20:34 2015 (external edit)