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Diff of /pkg/Matrix/TODO
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revision 2537, Sat May 8 15:24:53 2010 UTC  revision 2538, Sat May 8 15:25:20 2010 UTC  

#  Line 207  Line 207 
207  line in tests/indexing.R uses very large objects unnecessarily;  line in tests/indexing.R uses very large objects unnecessarily; 
208  Improve replTmat() in R/Tsparse.R, making use of new "abIndex"  Improve replTmat() in R/Tsparse.R, making use of new "abIndex" 
209  vectors.  vectors. 
210  
211   {IS THIS CURRENT?}  
212  Sept. 2009:  
213  Subject: chol2inv() > solve(<CHMfactor>)  
214  
215  when testing and documenting chol2inv(),  
216  I found that it's pretty simple to also define a method for  
217  "CHMfactor" objects, namely simply the solve(*, Diagonal(.) "A")  
218  method.  
219  This is not particularly exciting, and also does *not*, I think  
220  help for defining a chol2inv() method for *sparse* (upper)  
221  triangular matrices. 

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