# languages

**URL:** https://discourse.datamethods.org/c/computing/lang/37.md

[Latest](https://discourse.datamethods.org/latest.md) · [Categories](https://discourse.datamethods.org/categories.md) · [Tags](https://discourse.datamethods.org/tags.md)

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## [About the languages category](https://discourse.datamethods.org/t/about-the-languages-category/60)

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**Author:** [@f2harrell](https://discourse.datamethods.org/u/f2harrell)\
**Replies:** 0

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Computer languages, especially related to data analysis and graphics

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## [Reanalyzing MERIT design using Julia + recent numerical algorithms](https://discourse.datamethods.org/t/reanalyzing-merit-design-using-julia-recent-numerical-algorithms/27822)

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**Author:** [@davidcnorrismd](https://discourse.datamethods.org/u/davidcnorrismd)\
**Replies:** 5\
**Last updated:** [August 11, 2026, 5:47pm UTC](https://discourse.datamethods.org/t/reanalyzing-merit-design-using-julia-recent-numerical-algorithms/27822 "2026-08-11T17:47:44Z")

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Here’s an interesting case of a paper that made it through peer review at Statistics in Medicine despite using Monte Carlo estimation without regard to its inherent error. An extensive tabulation and simulation study wer…

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## [What became of Ihaka & Temple Lang's (2008) "Back to the Future"?](https://discourse.datamethods.org/t/what-became-of-ihaka-temple-langs-2008-back-to-the-future/28715)

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**Author:** [@davidcnorrismd](https://discourse.datamethods.org/u/davidcnorrismd)\
**Replies:** 4\
**Last updated:** [April 23, 2026, 1:36pm UTC](https://discourse.datamethods.org/t/what-became-of-ihaka-temple-langs-2008-back-to-the-future/28715 "2026-04-23T13:36:34Z")

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Ross Ihaka and Duncan Temple Lang’s 2008 conference paper \[1\] (PDF) came to my attention via About Lisp-Stat | Lisp-Stat, and I wonder what happened leading to the (apparent?) abandonment of this idea. Does anybody know? …

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## [Quickr -- a R to Fortran source to source compiler](https://discourse.datamethods.org/t/quickr-a-r-to-fortran-source-to-source-compiler/28543)

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**Author:** [@R\_cubed](https://discourse.datamethods.org/u/R_cubed)\
**Replies:** 3\
**Last updated:** [November 30, 2025, 4:17pm UTC](https://discourse.datamethods.org/t/quickr-a-r-to-fortran-source-to-source-compiler/28543 "2025-11-30T16:17:57Z")

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It is far from unusual to find computational speed a limiting factor in some types of data analysis. The development of higher level languages with features like automatic memory management have made programming more ac…

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## [Bayesian Regression Modeling Strategies](https://discourse.datamethods.org/t/bayesian-regression-modeling-strategies/6105)

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**Author:** [@f2harrell](https://discourse.datamethods.org/u/f2harrell)\
**Replies:** 94\
**Last updated:** [September 23, 2024, 2:29pm UTC](https://discourse.datamethods.org/t/bayesian-regression-modeling-strategies/6105 "2024-09-23T14:29:45Z")

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This is the place for questions and answers regarding the R rmsb package. Earlier questions may be found here.

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## [How to create the real splines values for the rcs and %ia% functions in the rms package?](https://discourse.datamethods.org/t/how-to-create-the-real-splines-values-for-the-rcs-and-ia-functions-in-the-rms-package/4173)

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**Author:** [@maikol-solis](https://discourse.datamethods.org/u/maikol-solis)\
**Replies:** 4\
**Last updated:** [March 14, 2021, 4:26pm UTC](https://discourse.datamethods.org/t/how-to-create-the-real-splines-values-for-the-rcs-and-ia-functions-in-the-rms-package/4173 "2021-03-14T16:26:47Z")

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Hi everyone! I have a very basic question but I maybe you could help me. Suppose you have two random variables X1 \<- rnorm(1000) X2 \<- rnorm(1000) and I want to estimate the 3 knot restricted cubic spline for each on…

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## [How to get the unstable variable selection profile of stepwise and lasso during bootstrap?](https://discourse.datamethods.org/t/how-to-get-the-unstable-variable-selection-profile-of-stepwise-and-lasso-during-bootstrap/3194)

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**Author:** [@Orson](https://discourse.datamethods.org/u/Orson)\
**Replies:** 5\
**Last updated:** [April 12, 2020, 2:52pm UTC](https://discourse.datamethods.org/t/how-to-get-the-unstable-variable-selection-profile-of-stepwise-and-lasso-during-bootstrap/3194 "2020-04-12T14:52:44Z")

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I hope to get some R examples on showing the frequency of each candidate factor being selected by backward stepwise and lasso during bootstrap. I know in rms::validate function with backward method, the print can show “…

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## [Lrm function error: Error in if (x) { : argument is not interpretable as logical](https://discourse.datamethods.org/t/lrm-function-error-error-in-if-x-argument-is-not-interpretable-as-logical/3089)

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**Author:** [@Liang\_Hong](https://discourse.datamethods.org/u/Liang_Hong)\
**Replies:** 1\
**Last updated:** [March 13, 2020, 12:21pm UTC](https://discourse.datamethods.org/t/lrm-function-error-error-in-if-x-argument-is-not-interpretable-as-logical/3089 "2020-03-13T12:21:12Z")

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I have a logistic model, and I want to plot a nomogram using the rms package. But when a use the same formula with the lrm function it throws an error: Error in if (x) { : argument is not interpretable as logical I…

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## [Using R for epidemiology stats](https://discourse.datamethods.org/t/using-r-for-epidemiology-stats/2865)

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**Author:** [@Keno\_Mentor](https://discourse.datamethods.org/u/Keno_Mentor)\
**Replies:** 4\
**Last updated:** [January 14, 2020, 8:24am UTC](https://discourse.datamethods.org/t/using-r-for-epidemiology-stats/2865 "2020-01-14T08:24:44Z")

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So I’m doing a meta-analysis for the first time and I’m trying to get through some new (to me) statistical techniques using R. To test whether I’m used the code correctly, I’ve been using a few of the studies absolute da…

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## [How To Do Predictive Statistics: New (Free) Software](https://discourse.datamethods.org/t/how-to-do-predictive-statistics-new-free-software/158)

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**Author:** [@mattstat](https://discourse.datamethods.org/u/mattstat)\
**Replies:** 0\
**Last updated:** [July 23, 2018, 11:29pm UTC](https://discourse.datamethods.org/t/how-to-do-predictive-statistics-new-free-software/158 "2018-07-23T23:29:21Z")

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Time to leave hypothesis testing and parameter-based methods behind, and move to what we’ve always wanted. Which is a proper understanding of uncertainty. I’ve uploaded some new software, thus far only based on MCMCpack…