data frame to matrix r

data.matrix(frame, rownames.force = NA)

# Creating a dataframe  
df1 = data.frame(  
  "Name" = c("Amar", "Akbar", "Ronald"),  
  "Language" = c("R", "Python", "C#"),  
  "Age" = c(26, 38, 22)  
)  
  
# Converting into numeric matrix 
df2 <- data.matrix(df1)