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

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revision 1887, Thu Jun 7 09:04:34 2007 UTC revision 1922, Sat Jun 23 18:08:48 2007 UTC
# Line 142  Line 142 
142    !M  where M is "sparseMatrix", currently always gives dense. This only    !M  where M is "sparseMatrix", currently always gives dense. This only
143    makes sense when M is ``really sparse''.    makes sense when M is ``really sparse''.
145  - column names of sparse matrices are not printed;  - log1p(<sparseMatrix>) "should" give <dsparseMatrix>
146    we now "mention" them (if they are non-empty).    Pretty surely, this would happen automagically, if "log1p" became part of
147    Option:    "Math" group generic.
         build show( <sparseMatrix>) on a function, possibly  
         print.sparseMatrix(), which gets an argument such as  
         '  = FALSE' which is documented and can be set to TRUE  
 - 'arules' needs fast colSums() and rowSums() - for ngCMatrix;  
   do it for "nMatrix" and "lMatrix" and return *integer*  

Removed from v.1887  
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  Added in v.1922
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