How to Subset a Table in R (Example Code)
In this article, I’ll show how to extract a subset of a table object in the R programming language.
Creation of Example Data
data(mtcars) # Example data head(mtcars) # mpg cyl disp hp drat wt qsec vs am gear carb # Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4 # Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4 # Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1 # Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1 # Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2 # Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1 |
data(mtcars) # Example data head(mtcars) # mpg cyl disp hp drat wt qsec vs am gear carb # Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4 # Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4 # Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1 # Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1 # Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2 # Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
Example: How to Extract a Table Subset
mtcars_tab <- table(mtcars$cyl) # Create table with all values mtcars_tab # Display table # 4 6 8 # 11 7 14 |
mtcars_tab <- table(mtcars$cyl) # Create table with all values mtcars_tab # Display table # 4 6 8 # 11 7 14
mtcars_tab_new <- mtcars_tab[mtcars_tab > 10] # Subsetting table object mtcars_tab_new # Display updated table # 4 8 # 11 14 |
mtcars_tab_new <- mtcars_tab[mtcars_tab > 10] # Subsetting table object mtcars_tab_new # Display updated table # 4 8 # 11 14