Avoiding the .
As we've mentioned, using . in object names can lead to confusion.
This exercise is part of the course
Defensive R Programming
Exercise instructions
- Rename the objects and arguments below to use an underscore instead of a full stop.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Define a function to prevent pasting the code above
ci <- function(x, plot.it = FALSE) {
# Plot the data
if (isTRUE(plot.it)) hist(x)
m <- mean(x); s <- sd(x); n <- length(x)
c(m - 1.96 * s/sqrt(n), m + 1.96 * s/sqrt(n))
}
# Generate 100 normal random numbers
sample.values <- rnorm(100)
ci(sample.values)