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Dataframe,Matrix,Table

I don't understand what you mean by a header line but does this do the other two for you?

mydata  <-  data.frame( 1:5, 21: 25)
mydata
names(mydata)  <-  c("alph", "louie")
rownames (mydata)  <-  letters[1:5]
mydata

John Kane
Kingston ON Canada
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