SCM

SCM Repository

[matrix] Diff of /pkg/TODO
ViewVC logotype

Diff of /pkg/TODO

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 510, Fri Feb 4 23:36:17 2005 UTC revision 675, Sat Mar 26 11:16:05 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  - check to see if the .onLoad function to require the methods package  - methods for rbind and cbind where they make sense
   (in the AllClass.R file) is needed  
11    
12  - Should the uplo and diag slots continue to be stored as character?  - consider moving alloc3Darray from ./src/Mutils.c to
13    An alternative is to use a factor as in the enum values for the    $(RSRC)/src/base/array.c
   cblas.  
14    
15  - Organization of the source code files - right now they are organized  - data/ : names 'mm' and even more 'y' are  ``too short''.
16    according to class (e.g. dgeMatrix.R, dgeMatrix.h, dgeMatrix.c).  Is          If we really want to keep them, don't use "LazyData"
17    there a better way?          (such that one needs  data(*) explicitly);
18            But MM would rather want something like  ex.mm and ex.y
19    
20  - Fix the calculation of the Dim slot for the crossprod method for  -  slot "factors" maybe should move up to "Matrix"
   dgCMatrix objects (too tired to do that now).  
21    
22  - bCrosstab(): do we really want the diagonal "V:V" crosstabs?  -------
23    
24  - src/Metis/ : some Makefile needs fixing, as changing src/Metis/*.c  We have a (at least one) basic problem :
25               does not lead to recompilation.     Currently the show() method fail sometime after coercion:
26       e.g. 'sy' show()s wrongly, even though it "str()" fine :
27    
28  - man/Matrix.Rd :  has example with dimnames, but we just drop them!        (po <- crossprod(Matrix(0:3, 2))) # ok
29                  MM thinks dimnames should be supported (but then ...)        (ge <- as(po, "dgeMatrix")) # ok
30          (sy <- as(po, "dsyMatrix")) # BAD
31          str(sy) # looks fine
32    
33  - data/ : names 'mm' and even more 'y' are  ``too short''.    or
34          If we really want to keep them, don't use "LazyData"        example(expand) # -> ex$L and ex$U look bad, however
35          (such that one needs  data(*) explicitly);        as(ex$L, "dgeMatrix") # `works'
36          But MM would rather want something like  ex.mm and ex.y  
37      {Of course, we don't need a workaround but must understand
38       and solve the problem}
39    
40    ---
41    
42    - provide methods for "dspMatrix" and "dppMatrix"!
43    
44    - implement (more) methods for supporting "packed" (symmetric / triangular)
45      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
49      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

Legend:
Removed from v.510  
changed lines
  Added in v.675

root@r-forge.r-project.org
ViewVC Help
Powered by ViewVC 1.0.0  
Thanks to:
Vienna University of Economics and Business Powered By FusionForge