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 712, Fri May 6 22:20:59 2005 UTC revision 834, Mon Aug 8 08:36:34 2005 UTC
# Line 8  Line 8 
8    see ?Math  and the examples in ?SetGeneric    see ?Math  and the examples in ?SetGeneric
9    
10  - methods for rbind and cbind where they make sense  - methods for rbind and cbind where they make sense
11      (Kurt is particularly interested in dgCMatrix ones, for pkg 'arules')
12      ****> UNFEASIBLE as long cbind is function(..., *) !!!! <*******
13        --> follow John's proposition  cbind(x, ...) via Generic cbind2(x,y)?
14    
15  - consider moving alloc3Darray from ./src/Mutils.c to  - consider moving alloc3Darray from ./src/Mutils.c to
16    $(RSRC)/src/base/array.c    $(RSRC)/src/base/array.c
# Line 45  Line 48 
48    matrices; particularly something like pack() and unpack()  [to/from our    matrices; particularly something like pack() and unpack()  [to/from our
49    classes from/to "numeric"] --- have already man/unpack.Rd but no method yet!    classes from/to "numeric"] --- have already man/unpack.Rd but no method yet!
50    
51      (have some dtr* <-> dtp*)
52    
53  - implement diagonal Matrix class  "ddiMatrix" etc  - implement diagonal Matrix class  "ddiMatrix" etc
54    using constructor function Diagonal() or Diag().    using constructor function Diagonal() or Diag().
55    
56    - FIXME: dtpMatrix(... diag = "U") (i.e., unit-diagonal packed triangular)
57      -----  *does* need 'x' entries for the diagonal but these are never looked at.
58        -> change doc {or code ? - depends on what Lapack expects !}
59    
60    BUG: rcond() of a singular dpoMatrix gives a LaPack error instead of just 0:
61      MM <- crossprod(M <- Matrix(c(1:4,9:6), 2,4)) ; rcond(MM)
62      ##> Error in rcond(MM) : Lapack routine dpotrf returned error code 4
63    
64    
65  ---  ---
66    
67  - combine the C functions for multiplication by special forms and  - combine the C functions for multiplication by special forms and

Legend:
Removed from v.712  
changed lines
  Added in v.834

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