The columns of the data frame can be renamed by specifying the new column names as a vector. Method 1: using colnames () method colnames () method in R is used to rename and replace the column names of the data frame in R. Work with Precipitation Data R Libraries. I wrote a post on using the aggregate () function in R back in 2013 and in this post I'll contrast between dplyr and aggregate ().
How to Rename Data Frame Columns in R - Statology Example 1: Sum by Group Based on aggregate R Function The name of the first column in the result containing the names of the input e.g.
It basically helps the user to identify the role of the respective column in the data frame. The sum of values in the first row for the first and third columns is 11. It provides the efficient data.table object which is a much improved version of the default ame. data.table is a package is used for working with tabular data in R. In this article, we will learn how to add a Header to a Dataframe in the R programming language. How to count observations per ID in R? - Data Science. Follow ame into list by columns merge and row.names In this example, since there are 11 column names and we only provided 4 column names, only the first 4 columns were renamed. Melting and Casting in R - DataScience Made Simple The data matrix consists of several numeric columns as well as of the grouping variable Species. Aggregate - A Powerful Tool for Data Frame in R RHS variables values will become column names. By default NULL and the names of the input are discarded.