x <- seq(0, 10, lengh.out = 100)Warning: In seq.default(0, 10, lengh.out = 100) :
extra argument 'lengh.out' will be disregardedExercise 2: Solutions
Task 1.1
Define a vector x containing 100 values between 0 and 10.
Task 1.2
Define a second variable y using sin(x).
y <- sin(x)Task 1.3
plot(x, y, pch = 20)
Task 1.4
Do the same, but swap the axis now. However, the axis name should stay the same as before.
plot(y, x, pch = 20, xlab = "x", ylab = "y")
Task 1.5
Now, do the same as a line plot. Add a title. Add the additional argument lty = 2.
plot(x, y, type = "l", lty = 2, main = "Sinus function")
Task 1.6
Combines a scatter and a line plot: make a scatter plot and use the lines() function to add a line.
plot(x, y, type = "l", lty = 2, main = "Sinus function")
plot(x, y, pch = 20)
Task 1.7
Create a new variable x <- c(1:10, 1:20, 1:30, 1:40, 1:50). Plot a histogram using 5 breaks.
x = c(1:10, 1:20, 1:30, 1:40, 1:50)
hist(x, breaks = 5)
Task 1.8
Add a line to the histogram with x-axis values 1:50 and y-axis values 50:1. Use the additional argument lwd = 2.
hist(x, breaks = 5)
lines(1:50, 50:1, lwd = 2)
Task 1.9
Define a data set using the command df <- data.frame(x = c(rnorm(100), rexp(100)), group = rep(1:2, each = 100)).
df <- data.frame(x = c(rnorm(100), rexp(100)), group = rep(1:2, each = 100))Task 1.10
Make a Boxplot of the variable x.
boxplot(x)
Task 1.11
Make a Boxplot for both variables.
boxplot(x~group, data = df)