dataframe remove column r code example

Example 1: r data frame remove column

df$columnName <- NULL

Example 2: drop a column in r data frame

df <- df %>%
  select(-column_to_drop)

Example 3: remove column from matrix r

# Remove third column - by column number
MyMatrix <- MyMatrix[,-3]

# Remove third and fifth columns - by feeding the matrix a boolean vector
MyMatrix <- MyMatrix[,c(TRUE,TRUE,FALSE,TRUE,FALSE,TRUE)]