To get the list of columns and its datatype in R we use str() function and sapply along with class function. let’s see with an example of each
Let’s first create the dataframe.
df1=data.frame(State=c('Arizona','Georgia', 'Newyork','Indiana','seattle','washington','Texas'),
code=c('AZ','GA','NY','IN','ST','WT','TX'),
Score=c(62,47,55,74,31,77,85),
Index=c(6.8,7.1,8.9,7.4,9.4,7.7,9.2))
df1
So the dataframe will be
Get the list of columns and its datatype – Method 1
sapply() along with class function is used to get the datatype of each column
## Get the list of columns and its datatype – Method1 sapply(df1,class)
Result:
Get the list of columns and its datatype – Method 2
str() function is used to get the datatype of each column
## Get the list of columns and its datatype – Method2 str(df1)
Result:
