>>>>> "CH" == Chao(Charlie) Huang <hch...@gmail.com>
>>>>> on Fri, 11 Feb 2011 10:32:06 -0600 writes:
CH> I am right now using Revolution R Enterprise 4.2. Could
CH> somebody show me how to import/export SAS
CH> datasets. Thanks.
but not primarily on R-help, please.
At first, note that R is GNU R,
and R-help has been about R as a Free ("Libre") Software,
for all its many years and hundreds of thousands of messages.
Revolutions's product may be fine for some, in some situations,
but supporting non-Free parts of it, really does not belong to R
and R-help in my view.
Martin Maechler,
R Core and R mailing list administrator since 1996
CH> On Fri, Feb 11, 2011 at 8:52 AM, Abhijit Dasgupta, PhD
CH> <aikidasgu...@gmail.com> wrote:
>>
>> I'm sure the legal ground is tricky. However, OpenOffice
>> and LibreOffice and KWord have been able to open the
>> (proprietary) MS Word doc format for a while now, and
>> they are open source (and Libre Office might even be
>> GPL'd), so the algorithm is in fact "published" in
>> Jeremy's sense, and has been for several years. I figure
>> the reason for keeping the SAS reading functionality
>> proprietary is Revolution's (perfectly legitimate) wish
>> to make money by separating their product from GNU R and
>> adding features that would make people want to buy rather
>> than just download from CRAN.
>>
>> Within GNU R there are of course sas.get in the Hmisc
>> package (which requires SAS). It should also be quite
>> easy to write a wrapper around dsread, a command-line
>> closed source product freely downloadable in a limited
>> form which will convert sas7bdat files to csv or tsv
>> format (and SQL if you pay). This latter path won't
>> require SAS locally.
>>
>> I'm also sure that SAS has a way to export its datasets
>> into R, since the current version of IML Studio will in
>> fact interact with R.
>>
>>
>> On 02/10/2011 03:11 PM, Jeremy Miles wrote:
>>>
>>> On 10 February 2011 12:01, Matt
>>> Shotwell<m...@biostatmatt.com> wrote:
>>>>
>>>> On Thu, 2011-02-10 at 10:44 -0800, David Smith wrote:
>>>>>
>>>>> The SAS import/export feature of Revolution R
>>>>> Enterprise 4.2 isn't open-source, so we can't release
>>>>> it in open-source Revolution R Community, or to CRAN
>>>>> as we do with the ParallelR packages (foreach, doMC,
>>>>> etc.).
>>>>
>>>> Judging by the language of Dr. Nie's comments on the
>>>> page linked below, it seems unlikely this feature is
>>>> the result of a licensing agreement with SAS. Is that
>>>> correct?
>>>>
>>>
>> There was some discussion of this on the SAS email
>>> list. People who seem to know what they were talking
>>> about said that they would have had to reverse engineer
>>> it to decode the file format. It's slightly tricky
>>> legal ground - the file format can't be copyrighted but
>>> publishing the algorigthm might not be allowed. I guess
>>> if they release it as open source, that could be
>>> construed as publishing the algorithm. (SPSS and WPS
>>> both can open SAS files, and I'd be surprised if SAS
>>> licensed to them. [Esp WPS, who SAS are (or were) suing
>>> for all kinds of things in court in London.)
>>>
>>> Jeremy
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