« Interview with CEO of REvolution Computing, Richard Schultz | Main | Graphic literacy improving? »

February 03, 2009


Feed You can follow this conversation by subscribing to the comment feed for this post.

While I wholeheartedly agree with the concept, the example is not very good. The only thing we learn from that function call is that if we use sd R calls a function (written in c or fortran) called sd, so we are back at the starting point.

Well, no, it mostly calls 'var' -- which is where you hit the .Internal call. If it hits a matrix or a data frame, it calls itself in a way that then calls 'var'.

Still true, mind you, that 'sd' calls 'var' which makes an .Internal call. I think these are mostly coded in C, but I really neither know nor want to know.

The comments to this entry are closed.

Search Revolutions Blog

Got comments or suggestions for the blog editor?
Email David Smith.
Follow revodavid on Twitter Follow David on Twitter: @revodavid
Get this blog via email with Blogtrottr