[R] How to use curve() with two parameters in the function

C W tmrsg11 at gmail.com
Tue Oct 27 16:14:16 CET 2015


Dear R list,

I am trying to plot the curve of a function.

Here's the R code:

library(mvtnorm)

p <- function(x, mu){
   mu <- c(mu, 0)
   dmvnorm(c(x, 1), mu, diag(2))
}

> curve(p(x, 2), from = 0, to =1)
Error in dmvnorm(c(x, 1), mu, diag(2)) :
  mean and sigma have non-conforming size

I think my matrix probably have different size inside curve(), maybe I need
to use apply()?  I am not sure.

Thanks so much!

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