R-alpha: Re^3: data file names
Martin Maechler <email@example.com>
Wed, 3 Dec 1997 16:56:31 +0100
>>>>> "PD" == Peter Dalgaard BSA <firstname.lastname@example.org> writes:
PD> Martin Maechler <email@example.com> writes:
>> Yes, why not agree on this, now, even before implementation!
KH> rdf for R data file/format (data.dump/data.restore)
>> data.dump/data.restore is hopefully going to be S-plus compatible as much
>> as possible (that's why most of us would want it).
>> Hence, I think the `R' is really too much there.
PD> I don't think so. The data.dump format is really just an efficient
PD> encoding of the output of dput/dump.
right! Actually I never looked at it this way.
PD> It won't be more compatible than the data structures themselves.
but this will lead to really portable (between S and R) data.dump output
for many cases we want.
PD> That is, unless someone wants to sit
PD> down and catalog all the differences in internal data structures and
PD> do the relevant transformation code....
Actually however, one case we may want to be `compatible' are
factors, since they are part of data.frames.
Factors are somewhat different in R and S
(internally: clear; in 'dput(.)' -- maybe not necessary).
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