How to change column names of a Data frame

Question

Here is the data frame called prices:

prices
  pr1 pr2 pr3
1 100 125 110
2 132 189 140
3 255 270 260

change the column names to old,new and best?

Thank you in Advance!!

Answer 1

Easiest way:

names(prices)[1]<-paste0("old")
names(prices)[2]<-paste0("new")
names(prices)[3]<-paste0("best")
#or by using colnames
colnames(prices)<-c("old","new","best")

prices
  old new best
1 100 125  110
2 132 189  140
3 255 270  260

Answer 2

Try this way -

names(data frame) <-  [list of new names]
names(iris) <- letters(1:5)

names(iris) <= c("ab","avd","yet","fwagr","xs")

Answer 3

Hi,

To change the name of a column in a Dataframe, just use a combination of the names() function, indexing, and reassignment as shown below.

# Change name of 1st column of df to "a"
names(df)[1] <- "a"