3 messages · Ott Toomet, S Ellison
'rowsum()' seems to add row names to the resulting matrix, corresponding to the respective 'group' values. This is very handy, but it is not documented. Should the documentation mention it so it could be relied upon as part of API? Cheers, Ott
Ott Toomet Visiting Researcher School of Information Mary Gates Hall, Suite 310 University of Washington Seattle, WA 98195 [[alternative HTML version deleted]]
'rowsum()' seems to add row names to the resulting matrix, corresponding to the respective 'group' values. This is very handy, but it is not documented. Should the documentation mention it so it could be relied upon as part of API?
If you're referring to base::rowSums, the 'value' section of the help page says
" A numeric or complex array of suitable size, or a vector if the
result is one-dimensional. For the first four functions the
'dimnames' (or 'names' for a vector result) are taken from the
original array. "
S Ellison
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I am referring to base::rowsum(), not rowSums(). For some reason I cannot access it's help on my computer but the online documentation (R-devel version) states: Value A matrix or data frame containing the sums. There will be one row per unique value of group Period. Above, the argument 'reorder' is mentioned which orders rows to 'agree with tapply'. Cheers, Ott
'rowsum()' seems to add row names to the resulting matrix, corresponding
to
the respective 'group' values. This is very handy, but it is not
documented.
Should the documentation mention it so it could be relied upon as part
of API?
If you're referring to base::rowSums, the 'value' section of the help page
says
" A numeric or complex array of suitable size, or a vector if the
result is one-dimensional. For the first four functions the
'dimnames' (or 'names' for a vector result) are taken from the
original array. "
S Ellison
*******************************************************************
This email and any attachments are confidential. Any u...{{dropped:23}}