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[Help-gsl] matrix and matrix views

From: Joakim Hove
Subject: [Help-gsl] matrix and matrix views
Date: Thu, 26 Aug 2004 09:58:27 +0200
User-agent: Gnus/5.1003 (Gnus v5.10.3) Emacs/21.2 (gnu/linux)


I have a matrix m. In addition to the whole of m, I am also using a
submatrix m_part quite a lot. Currently this is implemented as

  m           = gsl_matrix_alloc(10,10);
  m_part_view = gsl_matrix_submatrix(m,0,0,5,5);
  m_part      = &m_part_view.matrix;

Now, the *only* use of the matrix view I have is in the consctruction
above, i.e. simply to get access to the (utility ?) function

 o Would it not be simpler to let gsl_matrix_submatrix return a
   pointer to a matrix struct which only had shared memory?

 o Can I let m_part_view go out of scope and continue to use m_part,
   or will m_part then loose it's size/stride information?

Best Regards


Joakim Hove
hove AT ift uib no
+47 (55 5)8 27 90

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