CAT speedup

[John W. Eaton]

On 29-Feb-2004, Petter Risholm <address@hidden> wrote:

| I've reimplemented the cat function which has resulted in a considerable
| speedup. As it is now, it should be comparable to matlab's cat function
| when it comes to speed.
| 
| The reason for the speedup comes mainly from elimination of all N-d
| indexing which was the bottleneck in the old version.
| 
| This patch also provides horzcat and vertcat. They are currently
| called horzcat2 and vertcat2 since there already are a couple of .m
| scripts for doing horzcat and vertcat (I'm pretty sure they are quite a
| bit slower than my version for N-d concatenation, so I would recommend
| removing those .m files from the distribution).

I applied your changes.

Thanks,

jwe