Re: numpy - 2D matrix/array - initialization like in Matlab...

From	Emile van Sebille <emile@fenx.com>
Subject	Re: numpy - 2D matrix/array - initialization like in Matlab...
Date	2012-10-15 14:52 -0700
References	<k5hu2e$h5i$1@dont-email.me>
Newsgroups	comp.lang.python
Message-ID	<mailman.2243.1350337892.27098.python-list@python.org> (permalink)

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someone wrote:
> How to initialize my array directly using variables ?
> 
> It could also be that I wanted:
> 
> test11 = 1
> test12 = 1.5
> test13 = 2
> test21 = 0
> test22 = 5
> 
> Dx = numpy.matrix('test11 test12 test13; test21 test22 -0.5; 0 -0.5 1.5')
> 
> Etc... for many variables...
> 
> Appreciate ANY help, thank you very much!

You could use string interpolation:

Dx = numpy.matrix('%s %s %s; %s %s -0.5; 0 -0.5 1.5'
               % (test11 test12 test13 test21 test22))


Emile

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numpy - 2D matrix/array - initialization like in Matlab... someone <newsboost@gmail.com> - 2012-10-15 23:09 +0200
  Re: numpy - 2D matrix/array - initialization like in Matlab... MRAB <python@mrabarnett.plus.com> - 2012-10-15 22:26 +0100
    Re: numpy - 2D matrix/array - initialization like in Matlab... someone <newsboost@gmail.com> - 2012-10-16 00:42 +0200
      Re: numpy - 2D matrix/array - initialization like in Matlab... Marco Nawijn <nawijn@gmail.com> - 2012-10-16 03:34 -0700
      Re: numpy - 2D matrix/array - initialization like in Matlab... Marco Nawijn <nawijn@gmail.com> - 2012-10-16 03:34 -0700
  Re: numpy - 2D matrix/array - initialization like in Matlab... Emile van Sebille <emile@fenx.com> - 2012-10-15 14:52 -0700

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