Hi,
Mike Hansen and I have put some work into making it possible to very
easily use R from Sage, and are
even maybe considering including R in Sage. This is very likely
definitely not ready yet, but we
have an experimental package that might work. It would be very
useful if some people could test
building it and report back whether or not it works, and how long it
takes to build.
All you have to do is:
(1) install R:
$ time ./sage -f -m r-2.6.1rc.p1
NOTE: If the package name changes, type
$ ./sage -experimental |grep r-
to see what the new name is. Note that we put "-f -m" above so that the R build
directory gets left laying around in spkg/build/. This is because
there are still some
issues with "make install" and R. Also, R hardcodes install paths
in the R command,
which is something we'll have to deal with before releasing R as an
official optional
package.
(2)
Then to test it out see if this works:
sage: import rpy
sage: rpy.r.t_test(range(100))
{'alternative': 'two.sided',
'conf.int': [43.743490583064158, 55.256509416935835],
'data.name': '0:99',
'estimate': {'mean of x': 49.5},
'method': 'One Sample t-test',
'null.value': {'mean': 0.0},
'p.value': 3.0537578007169442e-31,
'parameter': {'df': 99.0},
'statistic': {'t': 17.062204191756354}}
sage: time rpy.r.t_test(range(1000000))
CPU times: user 1.97 s, sys: 0.12 s, total: 2.08 s
Wall time: 2.09
{'alternative': 'two.sided',
'conf.int': [499433.7061652476, 500565.2938347524],
'data.name': '0:999999',
'estimate': {'mean of x': 499999.5},
'method': 'One Sample t-test',
'null.value': {'mean': 0.0},
'p.value': 0.0,
'parameter': {'df': 999999.0},
'statistic': {'t': 1732.0482094941815}}
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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