26 Mar
2012
26 Mar
'12
4:16 a.m.
On 26/03/2012, at 8:35 PM, Ketil Malde wrote:
Just to clarify (since I think the original suggestion was mine), I don't want to copy R's data frame (which I never quite understood, anyway)
A data.frame is - a record of vectors all the same length - which can be sliced and diced like a 2d matrix It's not unlike an SQL table (think of a column-oriented data base so a table is really a collection of named columns, but it _looks_ like a collection of rows).