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[matrix] Diff of /pkg/TODO
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Diff of /pkg/TODO

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revision 645, Tue Mar 15 00:51:42 2005 UTC revision 712, Fri May 6 22:20:59 2005 UTC
# Line 50  Line 50 
50    
51  ---  ---
52    
 - create a class of permutation matrices for use in expand.  The  
   current expand method for the LU factorization is not complete  
   because it does not provide the permutation.  
   
53  - combine the C functions for multiplication by special forms and  - combine the C functions for multiplication by special forms and
54    solution wrt special forms by using a 'right' argument and a    solution wrt special forms by using a 'right' argument and a
55    'classed' argument.    'classed' argument.
56       [done with dgeMatrix_matrix_mm();  not yet for other classes;
57        and for _crossprod()]
58    
59    - add more comprehensive examples / tests for Schur decomposition
60    
61    - arithmetic for sparse matrices:
62                 <sparseMatrix>  o  { <scalar> | <same-dim-sparseMatrix> }
63      should return a sparse matrix  for at least "+" and "*" , also %%,
64      and "/" and "%/%" at least when the RHS is non-zero a scalar.
65    
66    ---
67    
68    - in lmer.c check all instances of the use of ZtX and XtX and change
69      them so that having a negative last element of nc means use the
70      response only (but look for it in the right place).

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