Nothing

```
# Function to check input data, the vector of observation times.
# Used for the plotting functions, where time taken is less important.
# Throws an error or returns NULL if no issues found.
# Not exported
checkInput <- function(y) {
if(!is.vector(y) || !is.numeric(y))
stop("The times of observations must be in a numeric vector.")
if(length(unique(y)) < 2)
stop("You have ", length(unique(y)), " different observations; at least 2 are needed to fit a density.")
if(any(is.na(y)))
stop("Your data have missing values.")
if(any(y < 0 | y > 2*pi))
stop("You have times < 0 or > 2*pi; make sure you are using radians.")
return(NULL)
}
```

**Any scripts or data that you put into this service are public.**

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.