Re: operations with lists
- To: mathgroup at smc.vnet.net
- Subject: [mg4107] Re: operations with lists
- From: Harald Berndt <haraldb at nature.berkeley.edu>
- Date: Tue, 4 Jun 1996 02:19:34 -0400
- Organization: University of California Forest Products Lab
- Sender: owner-wri-mathgroup at wolfram.com
Jonathan Lee wrote:
>
> Hello,
>
> I need help for three things:
>
> 1) are there any tips for operating with large lists/matrices (in the
> order of 512*512 or so)
>
MathLink to MatLab or C librraries, maybe?
> and
>
> 2) is it possible to thread a compiled function over several lists.
One list at a time, you mean? That should be immediate. At the same
time? Combine the lists in the appropriate way.
>
> 3) is there any way to "intertwine" two lists?
>
> i.e., if a and b are lists, is there a simple way to make a list that is
> {a[[1]], b[[1]],a[[2]],b[[2]],...}?
>
> Thanks for any and all help.
>
Flatten[ Transpose[{a, b}] ]
--
_______________________________________________________________
Harald Berndt University of California
Research Specialist Forest Products Laboratory
Phone: 510-215-4224 FAX:510-215-4299
_______________________________________________________________
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