Re: [Gretl-users] vertical matrix concatenation (was matrix declaration error)

It strikes me that logical OR as applied to matrices, is, while potentially meaningful, quite arcane. I'd be surprised if there are any gretl scripts in circulation that involve OR'ing matrices.

* ...with the exception that "A|B" in matrix-generating expressions means vertical concatenation (and if you really want to OR matrices you must use the new "||" form). I'm not pushing this idea all that hard, just wondering. It carries some potential for confusion. The main problem I see is identifying a "matrix-generating expression" for the purpose of interpreting "|". My notion is that this would be the right-hand side of a "matrix M = ..." command, or the right-hand side of commands on the pattern genr M = ... M = ...