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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''. 
144  
145   column names of sparse matrices are not printed;   log1p(<sparseMatrix>) "should" give <dsparseMatrix> 
146  we now "mention" them (if they are nonempty).  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  
'col.names.show = 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* 

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