How can I do a break or white space in line plot in R

Question

I want to know how can I do a break or white space in a line plot in r using only the function plot, cause I have a big project and I can't change for ggplot. For example I have data of temperature all the month but I don have data de day 4, I need a white space or break in the line the day 4.

Answer 1

Insert an 'NA' value for the missing data.

set.seed(3)
x <- 1:10                 
y <- runif(10)
mydf <- data.frame(x = x, y = y)  
plot(y ~ x, type = 'l', data = mydf, main = 'All data')

mydf_missing <- mydf[-4, ]
plot(y ~ x, type = 'l', data = mydf_missing, main = 'Missing data')

mydf_na <- mydf
mydf_na[4,2] <- 'NA'
plot(y ~ x, type = 'l', data = mydf_na, main = 'Missing replaced with NA')