Integration by the Simpson method in the R

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I have the electric field data in an array, from this data I need to use the method of Simpson in this E .

In MATLAB, I already have it.

Does anyone know of any package or built-in R function that does this?

    
asked by anonymous 28.01.2015 / 19:27

1 answer

3

Try the sintegral function of the package Bolstad2 .

Example of manual : 

## integrate the normal density from -3 to 3
x<-seq(-3,3,length=100)
fx<-dnorm(x)
estimate<-sintegral(x,fx)$int
true.val<-diff(pnorm(c(-3,3)))
cat(paste("Absolute error :",round(abs(estimate-true.val),7),"\n"))
cat(paste("Relative percentage error :", 100*round((abs(estimate-true.val)/true.val),6),"%\n"))
    
28.01.2015 / 19:46
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