Created
July 15, 2015 23:53
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| library(dplyr) | |
| data(iris) | |
| str(iris['Sepal.Length']) | |
| 'data.frame': 150 obs. of 1 variable: | |
| $ Sepal.Length: num 5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ... | |
| str(iris[,'Sepal.Length']) | |
| num [1:150] 5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ... | |
| iris <- tbl_df(iris) | |
| str(iris[,'Sepal.Length']) | |
| Classes ‘tbl_df’ and 'data.frame': 150 obs. of 1 variable: | |
| $ Sepal.Length: num 5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ... |
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The behaviour of subsetting in the matrix fashion changes depending on whether the data frame is a tbl_df or not.