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Groups > comp.lang.python > #92941
| From | Fabien <fabien.maussion@gmail.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: How to construct matrix from vectors? |
| Date | 2015-06-21 10:49 +0200 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <mm5tq9$gtp$1@speranza.aioe.org> (permalink) |
| References | <mm55le$4sj$1@speranza.aioe.org> <mailman.665.1434853238.13271.python-list@python.org> <mm5c4c$fmm$1@speranza.aioe.org> <mm5hks$p52$1@speranza.aioe.org> |
On 06/21/2015 07:21 AM, Nasser M. Abbasi wrote:
> v1=np.array([(1,2,3)]).T
> v2=np.array([(4,5,6)]).T
> v3=np.array([(7,8,9)]).T
> v4=np.array([(10,11,12)]).T
>
> mat =np.hstack(( np.vstack((v1,v3)), np.vstack((v2,v4))) )
>
> Out[236]:
> array([[ 1, 4],
> [ 2, 5],
> [ 3, 6],
> [ 7, 10],
> [ 8, 11],
> [ 9, 12]])
>
> There are way too many '(([[]]))' things in Python :)
another solution with less "(([[]]))", and less ";". There are way too
many ";" in Matlab ;)
import numpy as np
v1 = [1, 2, 3]
v2 = [4, 5, 6]
v3 = [7, 8, 9]
v4 = [10, 11, 12]
np.hstack([[v1, v2], [v3, v4]]).T
Out[]:
array([[ 1, 4],
[ 2, 5],
[ 3, 6],
[ 7, 10],
[ 8, 11],
[ 9, 12]])
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How to construct matrix from vectors? "Nasser M. Abbasi" <nma@12000.org> - 2015-06-20 20:57 -0500
Re: How to construct matrix from vectors? MRAB <python@mrabarnett.plus.com> - 2015-06-21 03:20 +0100
Re: How to construct matrix from vectors? "Nasser M. Abbasi" <nma@12000.org> - 2015-06-20 22:47 -0500
Re: How to construct matrix from vectors? "Nasser M. Abbasi" <nma@12000.org> - 2015-06-21 00:21 -0500
Re: How to construct matrix from vectors? Fabien <fabien.maussion@gmail.com> - 2015-06-21 10:49 +0200
Re: How to construct matrix from vectors? Dave Farrance <df@see.replyto.invalid> - 2015-06-21 12:49 +0100
Re: How to construct matrix from vectors? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-06-21 09:32 +0100
Re: How to construct matrix from vectors? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-06-21 11:12 -0400
Re: How to construct matrix from vectors? lanuradha@gmail.com - 2015-06-21 09:00 -0700
Re: How to construct matrix from vectors? Tony the Tiger <tony@tiger.invalid> - 2015-07-09 20:23 +0000
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