Basic R plotting from a text file

example.r

# Read arguments from bash command line, example: Rscript data.txt plot.pdf
args <- commandArgs(trailingOnly = TRUE)
# Read data (space separated), if no header: header = FALSE
data <- read.csv(args[1], sep="")
# Set pdf output filename
pdf(file=args[2])

# Plot line plot
plot(data$time, data$raw, type='l')
# Draw another line on the same plot
lines(data$time, data$filtered, type = 'l', color='red')
# Draw points (.) on the same plot
points(data$time, data$points, pch='.', color='blue')
# Draw another line vertical/horizontal line on the same plot
abline(v=0)