Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2011

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: How to deal with big matrix?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg116633] Re: How to deal with big matrix?
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Tue, 22 Feb 2011 04:43:37 -0500 (EST)

Flatten@matrix[[All,All,1]

and

Flatten@matrix[[All,All,2]

Bobby

On Mon, 21 Feb 2011 18:29:01 -0600, Szymon Roziewski  
<szymon.roziewski at gmail.com> wrote:

> Hello there,
>
> I have quite big matrix with let say 1000 rows and 1100 columns.
> Each of element of this matrix is a point on a surface e.g.  
> {1.232,12.123}
> How can I quickly get first element of each point for whole matrix and  
> put
> it in a vector (1000*1100 - this will be a length of that vector)  
> without do
> it in a nested loop (Do[Do[...]])?
> And the similar to get the second element of each point into vector.
>
> kind regards,
> Szymon Roziewski


-- 
DrMajorBob at yahoo.com


  • Prev by Date: Re: How to deal with big matrix?
  • Next by Date: Re: Delete elements from list..
  • Previous by thread: Re: How to deal with big matrix?
  • Next by thread: Re: How to deal with big matrix?