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Re: concatenate matrices?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg118085] Re: concatenate matrices?
  • From: Sseziwa Mukasa <mukasa at gmail.com>
  • Date: Tue, 12 Apr 2011 05:55:34 -0400 (EDT)

On Apr 11, 2011, at 7:08 AM, hadi motamedi wrote:

> Dear All
> I have two column matrices named y1 & y2 with dimensions as 448000*1 .
> Can you please let me know how to construct a new matrix say 'y' with
> dimensions 448000*2 such that each column of it equals y1(or y2)?
> Thank you
>


Are y1 and y2 really matrices?  Or vectors?  Eg. is Length[Dimensions[y1]] 
2 or 1?

If it's 2 then

y = Join[y1,y2,2]

If it's 1 then

y = Transpose[{y1,y2}]

Regards,
	Ssezi


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