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

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revision 2884, Fri Jul 5 13:04:05 2013 UTC revision 2885, Fri Jul 26 20:49:21 2013 UTC
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1  ##-*- mode: org -*-  ##-*- mode: org -*-
2    
3  * *Urgent* in some sense ------------------------------------------------------  * *Urgent* in some sense ------------------------------------------------------
4    ** TODO src/CHOLMOD/MatrixOps/cholmod_symmetry.c  is "cool" and fast;
5  - diagonalMatrix inherits from sparseMatrix, *BUT*  Definitely should use it for solve(<dgCMatrix>)  {it seems MATLAB does}.
6    ** diagonalMatrix inherits from sparseMatrix, *BUT*
7    "ddiMatrix" does not inherit from "dsparseMatrix", nor does    "ddiMatrix" does not inherit from "dsparseMatrix", nor does
8    "ldiMatrix" from "lparseMatrix".   Seems an undesirable inconsistency    "ldiMatrix" from "lparseMatrix".   Seems an undesirable inconsistency
9    ** Look at Paul Bailey's problem -- CHOLMOD error (even seg.fault for him)
 - Look at Paul Bailey's problem -- CHOLMOD error (even seg.fault for him)  
10    --> ~/R/MM/Pkg-ex/Matrix/sparseOrderedLogit.R    --> ~/R/MM/Pkg-ex/Matrix/sparseOrderedLogit.R
11    ** BunchKaufman()'s result is not really useful yet {but it is used on C
 - BunchKaufman()'s result is not really useful yet {but it is used on C  
12    level e.g. for solve(<dsyMatrix>).   Should define  expand() method or    level e.g. for solve(<dsyMatrix>).   Should define  expand() method or
13    similar, see man/BunchKaufman-methods.Rd and R/dsyMatrix.R (at end).    similar, see man/BunchKaufman-methods.Rd and R/dsyMatrix.R (at end).
14    
15    
16  * New smallish ideas, relatively urgent for MM --------------------------------  * New smallish ideas, relatively urgent for MM --------------------------------
17    
18  - Investigate the "band changing (and getting) ideas  'band<-' etc,  - Investigate the "band changing (and getting) ideas  'band<-' etc,

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