MagicPlot Manual

Plotting and nonlinear fitting software

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differentiation [Mon Jun 3 15:41:39 2013]
Alexander
differentiation [Sun Nov 8 12:21:24 2015]
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-====== Differentiation (Pro edition only) ===== 
  
-Open Table or Figure or Plot with initial data and use ''Processing -> Differentiate'' menu item. 
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-{{:differentiate.png?nolink|}} 
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-===== Formula ===== 
-To perform differentiation you should specify two columns: //x// and //y//. Missing values are ignored. 
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-MagicPlot uses [[wp>Finite_difference|central difference]] formula to compute the derivative: 
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-<m>{y prime}_i = 1/2 ({y_{i+1} − y_i}/{x_{i+1} − x_i} + {y_i − y_{i − 1}}/{x_i − x_{i − 1}}),~ i=2...N − 1</m> 
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-First and last points (//i//=1 and //i=N//) are computed as follows: 
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-<m>{y prime}_1 = {y_2 − y_1}/{x_2 − x_1} ,~~ {y prime}_N = {y_N − y_{N − 1}}/{x_N − x_{N − 1}}</m> 
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-===== See Also ===== 
-  * [[processing]] 
-  * [[Integration]] 
differentiation.txt · Last modified: Sun Nov 8 12:21:24 2015 (external edit)