building data frames from vectors.qmd (solution)

Exercise

You have data on the length, width, and height of 10 individuals of the yew Taxus baccata stored in the following vectors:

length <- c(2.2, 2.1, 2.7, 3.0, 3.1, 2.5, 1.9, 1.1, 3.5, 2.9)
width <- c(1.3, 2.2, 1.5, 4.5, 3.1, NA, 1.8, 0.5, 2.0, 2.7)
height <- c(9.6, 7.6, 2.2, 1.5, 4.0, 3.0, 4.5, 2.3, 7.5, 3.2)

Make a data frame that contains these three vectors as columns along with a genus column containing the name Taxus on all rows and a species column containing the word baccata on all rows.

Output solution

   genus species length width height
1  Taxus baccata    2.2   1.3    9.6
2  Taxus baccata    2.1   2.2    7.6
3  Taxus baccata    2.7   1.5    2.2
4  Taxus baccata    3.0   4.5    1.5
5  Taxus baccata    3.1   3.1    4.0
6  Taxus baccata    2.5    NA    3.0
7  Taxus baccata    1.9   1.8    4.5
8  Taxus baccata    1.1   0.5    2.3
9  Taxus baccata    3.5   2.0    7.5
10 Taxus baccata    2.9   2.7    3.2