How to count unique values in r

Get the unique values of the variable using unique().

How to count the number of unique values in a column in r

dummyData = rep(c(1,2, 2, 2), 25)

table(dummyData)
# dummyData
#  1  2 
# 25 75

## or another presentation of the same data
as.data.frame(table(dummyData))
#    dummyData Freq
#  1         1   25
#  2         2   75

-1

Source: stackoverflow.com

Similar codes

0 vote176 views2 answers
R tibble select rows containing string
R
0 vote188 views1 answer
How to create dates in a range in R
R
0 vote176 views1 answer
Geom_jitter transparency
R
0 vote178 views1 answer
R extract top values from data frame
R
1 vote177 views1 answer
KnnImputation in r
R
0 vote142 views1 answer
Dplyr average columns
R
0 vote123 views1 answer
How to link world bank data into r
R
0 vote181 views1 answer
Remove all empty strings from R
R
3 votes207 views3 answers
R set dataframe column names
R
0 vote224 views1 answer
Rename variable in r dplyr
R