[R] How to best divide table by table

[Peter Dalgaard]

Serguei Kaniovski <kaniovsk at wsr.ac.at> writes:

> Hi all,
> 
> how can I divide two tables of the same dimension so that all names are
> preserved, ie do not become NA? I have "tab1" and "tab2", each having
> names in the first column. I want "tab3" with the same names and values
> "tab1/tab2".

Explain. If tab1 and tab2 have names "in the first column", how do you
expect the divide operation to work? Tables normally do preserve
row/column names in arithmetic:

> t1 <- t2 <- table(airquality$Month,airquality$Temp> 80)
> t1

    FALSE TRUE
  5    30    1
  6    20   10
  7     3   28
  8    11   20
  9    21    9
> t1/t2

    FALSE TRUE
  5     1    1
  6     1    1
  7     1    1
  8     1    1
  9     1    1


-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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