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[matrix] Diff of /pkg/Done
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Diff of /pkg/Done

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revision 561, Fri Feb 18 19:24:43 2005 UTC revision 953, Wed Sep 28 19:31:36 2005 UTC
# Line 35  Line 35 
35    
36  - Clean up vestigial functions (pdFactor, pdMatrix, matrix<-) from the  - Clean up vestigial functions (pdFactor, pdMatrix, matrix<-) from the
37    nlme package.    nlme package.
38    
39    - create a class of permutation matrices for use in expand.  The
40      current expand method for the LU factorization is not complete
41      because it does not provide the permutation.
42    
43    - tcrossprod() now works: C code now "exported" via init.c
44    
45    - Fixed: dtpMatrix(... diag = "U") (i.e., unit-diagonal packed triangular)
46             *does* need 'x' entries for the diagonal but these are never looked at.
47        -> changed doc -- Lapack also says they are not referenced but assumed 1.
48    
49    
50    - in lmer.c check all instances of the use of ZtX and XtX and change
51      them so that having a negative last element of nc means use the
52      response only (but look for it in the right place).
53    
54    - Solved:
55    
56       Currently the show() method fail sometime after coercion:
57       e.g. 'sy' show()s wrongly, even though it "str()" fine :
58    
59          (po <- crossprod(Matrix(0:3, 2))) # ok
60          (ge <- as(po, "dgeMatrix")) # ok
61          (sy <- as(po, "dsyMatrix")) # BAD
62          str(sy) # looks fine
63    
64      or
65          example(expand) # -> ex$L and ex$U look bad, however
66          as(ex$L, "dgeMatrix") # `works'
67    
68      {Of course, we don't need a workaround but must understand
69       and solve the problem}
70    
71    -  slot "factors" maybe should move up to "Matrix" -- done, 2005-09-28
72    
73    - arithmetic for sparse matrices:
74         done for    <sparseMatrix>  o  <scalar>
75      {more needed: see TODO}
76    

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