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

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revision 491, Wed Feb 2 19:40:26 2005 UTC revision 529, Mon Feb 7 10:56:34 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    
10  - check to see if the .onLoad function to require the methods package  - bCrosstab(): do we really want the diagonal "V:V" crosstabs?
11    (in the AllClass.R file) is needed                 (if so or in any case: add to  man/bCrosstab.Rd )
12    
13  - Should the uplo and diag slots continue to be stored as character?  - src/Metis/ : one of the two Makefiles needs fixing, as changing
14    An alternative is to use a factor as in the enum values for the               src/Metis/*.c  does not lead to recompilation.
15    cblas.    --DB - it seems both Makefiles need fixing.  I think I have the
16                 src/Metis/Makefile fixed but not src/Makefile
 - 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?  
17    
18  - Fix the calculation of the Dim slot for the crossprod method for  - man/Matrix.Rd :  has example with dimnames, but we just drop them!
19    dgCMatrix objects (too tired to do that now).                  MM thinks dimnames should be supported (but then ...)
20    
21    - data/ : names 'mm' and even more 'y' are  ``too short''.
22            If we really want to keep them, don't use "LazyData"
23            (such that one needs  data(*) explicitly);
24            But MM would rather want something like  ex.mm and ex.y
25    
26    - spelling style: Should "coersion" be "coercion" ?
27    
28    - "factors" maybe should move up to "Matrix"
29    
30    -------
31    
32    We have a (at least one) basic problem :
33       Currently the show() method fail sometime after coercion:
34       e.g. 'sy' show()s wrongly, even though it "str()" fine :
35    
36          (po <- crossprod(Matrix(0:3, 2))) # ok
37          (ge <- as(po, "dgeMatrix")) # ok
38          (sy <- as(po, "dsyMatrix")) # BAD
39          str(sy) # looks fine
40    
41      or
42          example(expand) # -> ex$L and ex$U look bad, however
43          as(ex$L, "dgeMatrix") # `works'
44    
45      {Of course, we don't need a workaround but must understand
46       and solve the problem}

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