[Rd] Using GSL Routines
Dear R-programmers, I am trying out certain methods in R, and the statistics require me to calculate n-(sample size) dimensional equations. They are not really very hard to solve - my home-brew implentation of Newton-Raphson in R succeeds most of time with simulated data. (Note that I am assured of a unique solution by theory). Problem comes in with real data, for which I should really implement a good line search (convergence issues). Being lazy, i would like to link to the GSL routines which are of course faster and more reliable. My question is should i use the C - GSL routines or the Python ones in NumPy? My major concern is the portability of the code i write: really dont want users to have to install a bunch of software just to use my package. (Im looking at Windows here) Alternatively, should i just hack out the code (fsolve) and put it in my package? Thanks for the advice, Mohit Dayal Applied Statistics & Computing Lab ISB [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Tail Call Elimination?
Dear R-programmers, I am trying to program a Newton-Raphson in R (yes, i will try GSL, not right now), and it would be a real boon if R had tail call elimination, so that a recursive program has a guarantee not to fail due to stack overflows, given how slow loops in R are. I did look at the documentation, but could not find a reason for it. Regards, Mohit Dayal Researcher Applied Statistics & Computing Lab ISB [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Projection Pursuit Index
Dear R-developers, I am trying to experiment with projection pursuit (PP), and different indexes for the same, especially using the tourr package. However, I've noticed that a PP index in the said package is only a function of the projected data. Could I modify the function so that the index sees the projection bases instead (or in addition to the data) ? Alternatively, if some other package can be used this way, I would be greatly obliged if you'd let me know. Thanks and Regards, Mohit Dayal Researcher Applied Statistics and Computing Lab Indian School of Business [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Fwd: Projection Pursuit Index
OK, figured this one out. But would a be a good modification I feel. Thanks and Regards, Mohit Dayal -- Forwarded message -- From: Mohit Dayal Date: 31 May 2011 17:05 Subject: Projection Pursuit Index To: R-devel@r-project.org Dear R-developers, I am trying to experiment with projection pursuit (PP), and different indexes for the same, especially using the tourr package. However, I've noticed that a PP index in the said package is only a function of the projected data. Could I modify the function so that the index sees the projection bases instead (or in addition to the data) ? Alternatively, if some other package can be used this way, I would be greatly obliged if you'd let me know. Thanks and Regards, Mohit Dayal Researcher Applied Statistics and Computing Lab Indian School of Business [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] AS Algorithms
Dear R-programmers, I would like to use one of the AS Algorithms that used to be published in the journal Applied Statistics of the Royal Statistical Society (Series C). FORTRAN code based on these are available on the Statlib website at http://lib.stat.cmu.edu/modules.php?op=modload&name=PostWrap&file=index&page=apstat/ with the disclaimer, *"The Royal Statistical Society holds the copyright to these routines, but has given its permission for their distribution provided that no fee is charged."* * * *Does this make these programs compatible with an open source license like GPL-2 ? More specifically, can one safely include them in an R package?* * * *BTW I am looking at AS 133 : Finding the global maximum or minimum of a function of 1 variable. * Regards, Mohit Dayal Researcher Applied Statistics & Computing Lab ISB [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Fwd: Two ideas / feature requests for R CMD check
Hi All, One thing that I've encountered with R CMD check is that if your package uses some functions from a base package, then the corresponding NAMESPACE imports do not seem to be automatically suggested. It might possibly an issue with how one's system is configured, but say, with the --as-cran switch this thing should be picked up on. Like I felt this was something else that could be looked into :) Thanks! Mohit -- mohitdayal.strikingly.com -- Forwarded message -- From: Gábor Csárdi Date: 25 February 2016 at 05:40 Subject: [Rd] Two ideas / feature requests for R CMD check To: "r-devel@r-project.org" We all love R CMD check. :) In my opinion it would be even better if it had options to - Run all checks, even if one fails with an error. I realize this sometimes might not make sense (e.g. if there is no DESCRIPTION file), but often does. - Run all examples even if an example fails. I think it would be great to get all failing examples at once, so that a package author can estimate the amount of breakage. Thank you for considering there, Gabor __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
