Select Specific Columns In The Index Range
We can select by using the index range operator, as shown below.
Syntax:
dataframe[,column_index_start:column_index_end]
where.
- column_index_start is the first index number, and column_index_end is the second index number.
Example:
R
# create a dataframe with 3 rows and 4 columnsdata=data.frame(name=c("akash","kyathi","preethi"), subjects=c("java","R","dbms"), marks=c(90,98,78))# select first to third columnprint(data[,1:3]) |
Output:
name subjects marks 1 akash java 90 2 kyathi R 98 3 preethi dbms 78
How to Select DataFrame Columns by Index in R?
In this article, we will discuss how to select columns by index from a dataframe in R programming language.
Note: The indexing of the columns in the R programming language always starts from 1.
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