--- Raul Miller <[EMAIL PROTECTED]> wrote: > On 4/3/07, Oleg Kobchenko <[EMAIL PROTECTED]> wrote: > > Some terminology though is not very clear: list/vector and > > table/matrix. In Dictionary list is 1-array, i.e. having > > one-element shape. Frame is the shape for a selected cell-rank. > > When cells are of rank _1, they are called items, and the > > frame is one-elemet shape. So can we call it list? > > Then how we distinguished lists when the whole array > > is rank-1 ? Vectors? > > I think the issue here is "list of what". > > For example, in http://www.jsoftware.com/help/dictionary/d300.htm > we have a list of cells, which clearly includes arrays with rank > greater than 1. In contrast, > http://www.jsoftware.com/help/dictionary/d200.htm > is clearly referring to a rank 1 list. > > Since the term "list" is a generic term for a collection of arbitrary > things, I think it's reasonable indicate when we want something > less general (for example, "list of atoms" vs. "list of items" vs. "string"). > > In contrast, vector is even more restricted, but we can use it more > generally if we don't mind being sloppy (sometimes vector implies > numeric data and in physics we are also saying something > abstract about the physical system we are describing).
>From "A. Nouns": The rest of the shape vector is called the frame... Since shape is always rank-1, "vector" is used to denote rank-1 arrays specifically. ____________________________________________________________________________________ Don't pick lemons. See all the new 2007 cars at Yahoo! Autos. http://autos.yahoo.com/new_cars.html ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
