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

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revision 511, Fri Feb 4 23:44:00 2005 UTC revision 530, Mon Feb 7 10:58:27 2005 UTC
# Line 7  Line 7 
7    ?Math.data.frame  and the examples in    ?Math.data.frame  and the examples in
8    ?SetGeneric    ?SetGeneric
9    
 - Should the uplo and diag slots continue to be stored as character?  
   An alternative is to use a factor as in the enum values for the  
   cblas.  
   
 - Organization of the source code files - right now they are organized  
   according to class (e.g. dgeMatrix.R, dgeMatrix.h, dgeMatrix.c).  Is  
   there a better way?  
   
 - Fix the calculation of the Dim slot for the crossprod method for  
   dgCMatrix objects (too tired to do that now).  
   
10  - bCrosstab(): do we really want the diagonal "V:V" crosstabs?  - bCrosstab(): do we really want the diagonal "V:V" crosstabs?
11                   (if so or in any case: add to  man/bCrosstab.Rd )
12    
13  - src/Metis/ : some Makefile needs fixing, as changing src/Metis/*.c  - src/Metis/ : one of the two Makefiles needs fixing, as changing
14               does not lead to recompilation.               src/Metis/*.c  does not lead to recompilation.
15      --DB - it seems both Makefiles need fixing.  I think I have the
16                 src/Metis/Makefile fixed but not src/Makefile
17    
18  - man/Matrix.Rd :  has example with dimnames, but we just drop them!  - man/Matrix.Rd :  has example with dimnames, but we just drop them!
19                  MM thinks dimnames should be supported (but then ...)                  MM thinks dimnames should be supported (but then ...)
# Line 30  Line 22 
22          If we really want to keep them, don't use "LazyData"          If we really want to keep them, don't use "LazyData"
23          (such that one needs  data(*) explicitly);          (such that one needs  data(*) explicitly);
24          But MM would rather want something like  ex.mm and ex.y          But MM would rather want something like  ex.mm and ex.y
25    
26    - "factors" maybe should move up to "Matrix"
27    
28    -------
29    
30    We have a (at least one) basic problem :
31       Currently the show() method fail sometime after coercion:
32       e.g. 'sy' show()s wrongly, even though it "str()" fine :
33    
34          (po <- crossprod(Matrix(0:3, 2))) # ok
35          (ge <- as(po, "dgeMatrix")) # ok
36          (sy <- as(po, "dsyMatrix")) # BAD
37          str(sy) # looks fine
38    
39      or
40          example(expand) # -> ex$L and ex$U look bad, however
41          as(ex$L, "dgeMatrix") # `works'
42    
43      {Of course, we don't need a workaround but must understand
44       and solve the problem}

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