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

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revision 344, Mon Nov 15 23:29:41 2004 UTC revision 530, Mon Feb 7 10:58:27 2005 UTC
# Line 1  Line 1 
 - Fix up the image method for the csc classes so the xlim and ylim are at half-integers  
   
 - Check whether the xtmp and atmp arguments are needed in the triplet_to_col call in lmeRep.c  
   
1  - Report the problem in the Linux ldexp manual page.  The second and  - Report the problem in the Linux ldexp manual page.  The second and
2    third calls in the Synopsis should be to ldexpf and ldexpl.    third calls in the Synopsis should be to ldexpf and ldexpl.
3    
4    - [,] indexing
5    
6    - group generics: "Arith", but also "Ops" and "Math";  see
7      ?Math.data.frame  and the examples in
8      ?SetGeneric
9    
10    - 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/ : one of the two Makefiles needs fixing, as changing
14                 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!
19                    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    - "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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