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

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revision 538, Thu Feb 10 13:50:27 2005 UTC revision 712, Fri May 6 22:20:59 2005 UTC
# Line 3  Line 3 
3    
4  - [,] indexing  - [,] indexing
5    
6  - group generics: "Arith", but also "Ops" and "Math";  see  - group generics: "Arith" (partly done),
7    ?Math.data.frame  and the examples in    but also "Compare", "Math" etc;
8    ?SetGeneric    see ?Math  and the examples in ?SetGeneric
9    
10  - methods for rbind and cbind where they make sense  - methods for rbind and cbind where they make sense
11    
 - bCrosstab(): do we really want the diagonal "V:V" crosstabs?  
                (if so or in any case: add to  man/bCrosstab.Rd )  
   
 - man/Matrix.Rd :  has example with dimnames, but we just drop them!  
                 MM thinks dimnames should be supported (but then ...)  
   
12  - consider moving alloc3Darray from ./src/Mutils.c to  - consider moving alloc3Darray from ./src/Mutils.c to
13    $(RSRC)/src/base/array.c    $(RSRC)/src/base/array.c
14    
# Line 23  Line 17 
17          (such that one needs  data(*) explicitly);          (such that one needs  data(*) explicitly);
18          But MM would rather want something like  ex.mm and ex.y          But MM would rather want something like  ex.mm and ex.y
19    
20  - "factors" maybe should move up to "Matrix"  -  slot "factors" maybe should move up to "Matrix"
21    
22  -------  -------
23    
# Line 45  Line 39 
39    
40  ---  ---
41    
42    - provide methods for "dspMatrix" and "dppMatrix"!
43    
44  - implement (more) methods for supporting "packed" (symmetric / triangular)  - implement (more) methods for supporting "packed" (symmetric / triangular)
45    matrices; particularly something like pack() and unpack().    matrices; particularly something like pack() and unpack()  [to/from our
46      classes from/to "numeric"] --- have already man/unpack.Rd but no method yet!
47    
48  - implement diagonal Matrix class  "ddiMatrix" etc  - implement diagonal Matrix class  "ddiMatrix" etc
49    using constructor function Diagonal() or Diag().    using constructor function Diagonal() or Diag().
50    
51    ---
52    
53    - combine the C functions for multiplication by special forms and
54      solution wrt special forms by using a 'right' argument and a
55      '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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