In the case when you need to specifically call the package with the command, make sure to use the formula:.
\(package::function()\)
Section 2.7 Common Gotchas & Quick Fixes
Below are some common mistakes made in the
tidyverse and ways to fix them. As always in R (and probably in life) if some code ever gets too frustrating, step away from your computer for a few minutes.
Subsection 2.7.1 = vs ==
In math, we use one equal sign. In
tidyverse, we use two equal signs.
filter(species = "Adelie") # WRONG
filter(species == "Adelie") # RIGHT
Subsection 2.7.2 NA-aware math
When doing math (inside or outside of
tidyverse) NA values can mess up everything. Below is an example of this. We can utilize na.rm = command, which by default is set to “FALSE”.
mean(penguins$body_mass_g) # Returns NA if any missing
mean(penguins$body_mass_g, na.rm = TRUE) # CORRECT
[1] NA [1] 4201.754
As you can see, the addition of
na.rm = "TRUE" removes the NA value and calculates the average.
Subsection 2.7.3 Pipe position
Piping is something that most R programmers use in some way or another. If you decide to use it, it is imperative that the pipe is placed on the line that you’re going to connect. Below is an example of a good and a bad (won’t work) piping.
penguins |>
select(species) # Good
penguins
|> select(species) # Bad
Subsection 2.7.4 Conflicting function names
As mentioned before, there may be times where there are packages being loaded that have conflicting function names. For instance
dplyr::filter vs stats::filter.
