Rstudio isn’t showing unique values. How do I fix it

[Tqurram]

For starters, I’m using R for the Google Data Analyst certification Capstone project. I’m using the Cyclistic dataset. I’m new to R.

I’m using the Unique() function to find the unique variables in the columns, but I get the error message saying the object is not found. How do I fix this?

Reprex:

names(divvy_tripp_data_July_2022)
[1] "ride_id" "rideable_type" "started_at"
[4] "ended_at" "start_station_name" "start_station_id"
[7] "end_station_name" "end_station_id" "start_lat"
[10] "start_lng" "end_lat" "end_lng"
[13] "member_casual"

unique(rideable_type)
Error in unique(rideable_type) : object 'rideable_type' not found
unique("rideable_type")
[1] "rideable_type"

unique('rideable_type')
[1] "rideable_type"
class(divvy_tripp_data_July_2022)
[1] "spec_tbl_df" "tbl_df" "tbl" "data.frame"
unique(start_station_name)
Error in unique(start_station_name) :
object 'start_station_name' not found

[andresrcs]

Hi, welcome!

We don't really have enough info to help you out. Could you ask this with a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

If you've never heard of a reprex before, you might want to start by reading this FAQ:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[Tqurram]

I just updated it. Does it help you understand?

[andresrcs]

Well, that is not a reproducible example since you are not including sample data (I strongly recommend you to read the reprex guide) but it is enough to see where your problem is.

You are not referencing the variable correctly, columns do not exist as stand-alone objects, they are sub-elements of a data frame, so you have to reference them in the context of a data frame, see this example using a built-in data set.

names(iris)
#> [1] "Sepal.Length" "Sepal.Width"  "Petal.Length" "Petal.Width"  "Species"
unique(iris$Species)
#> [1] setosa     versicolor virginica 
#> Levels: setosa versicolor virginica

^{Created on 2022-09-06 with reprex v2.0.2}
So, in your case, you should type, unique(divvy_tripp_data_July_2022$rideable_type)