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r change column name in dataframe

df <- df %>%
  rename(newName1 = oldName1 ,
         newName2 = oldName2)
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how to change column names in r

colnames(dataset) <- c('name1','name2',..)
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r - change column name

colnames(df)[colnames(df) == "name"] <- "new_name"
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r dataframe change column name

names(df)[1] <- paste("newName")
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change columnnames in r

# declaring the columns of data frame
df = data.frame(
col1 = c('A', 'B', 'C', NA,'M'),
col2 = c(12.5, 9, 16.5,  20, 14.5),
col3 = c(NA, 3, 2, NA, 0))
  
# printing original data frame
print("Original data frame : ")
print(df)
  
# print("Renaming columns names ")
# renaming all the column names of data frame
df <- setNames(df, c("changed_Col1","changed_Col2","changed_Col3"))
  
print("Renamed data frame : ")
print(df)
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