Re: [R] Integration with "adapt"

From: Martin Maechler <maechler_at_stat.math.ethz.ch>
Date: Wed 28 Jul 2004 - 18:03:34 EST

>>>>> "Rodrigo" == Rodrigo Drummond <rduarte@unicamp.br>
>>>>> on Tue, 27 Jul 2004 15:31:07 -0300 (BRT) writes:

    Rodrigo> Hi all, I need to calculate a multidimensional
    Rodrigo> integration on R. I am using the command
    Rodrigo> “adapt” (from library adapt), although

it's a "package", not a library.

    Rodrigo> sometimes I get the following error message:

    Rodrigo> Ifail=2, lenwrk was too small. -- fix adapt() !
    Rodrigo> Check the returned relerr! in: adapt(3, linf, lsup,
    Rodrigo> functn = Integrando1)

If you could give as a *reproducible* example,

we (the adapt authors) would have chance to do what the above message says, namely "fix adapt()" ..

    Rodrigo> I guess it happens because the domain of     Rodrigo> integration is too small,

maybe, maybe not. We need an example we can reproduce, see above.

    Rodrigo> although I tried a change of variables to avoid
    Rodrigo> this problem and it didn’t help. The command adapt
    Rodrigo> calls a fortran routine, but I don’t know fortran
    Rodrigo> enough to fix the problem.

Martin Maechler, ETH Zurich



R-help@stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Jul 28 18:11:07 2004

This archive was generated by hypermail 2.1.8 : Fri 18 Mar 2005 - 02:40:24 EST