mattfidler @mattfidler

Fort Worth, TX Joined July 2008

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mattfidler @mattfidler

a week ago

New features in #nlmixr2 4.0, a #rstats package include a vere-style loading, importing models from older versions of nlmixr2 and Rstudio bug fixes. See blog.nlmixr2.org/blog/2025-08-2…

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The nlmixr2 team is thrilled to announce the release of nlmixr2 4.0! This major update introduces the WNL linear compartment solutions, replacing the previous ADVAN-based approach for improved accuracy, stability, and compatibility. blog.nlmixr2.org/blog/2025-07-1…

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mattfidler @mattfidler

3 months ago

In this month blog I speak of some of the lesser known ggplot2 pharmacometric geoms that are included in rxode2: blog.nlmixr2.org/blog/2025-05-3…

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mattfidler @mattfidler

4 months ago

Do you want to do pharmacometrics with neural network ODEs? You can use nlmixr2 as well as other tools. See this month's blog post: blog.nlmixr2.org/blog/2025-04-3…

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mattfidler @mattfidler

5 months ago

In this month's blog, I discuss adding more observations to predictions to better visualize predictions vs observations. This is covered here: blog.nlmixr2.org/blog/2025-03-3…

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mattfidler @mattfidler

6 months ago

In this month's blog, I talk about the ins an outs of plotting in rxode2: blog.nlmixr2.org/blog/2025-02-2…

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mattfidler @mattfidler

7 months ago

In this month's blog post I talk about the current extensibility of the nlmixr2 ecosystem that allows expansion of code for linear models, named arguments in functions, and even neural network ODEs. blog.nlmixr2.org/blog/2025-01-2…

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mattfidler @mattfidler

9 months ago

Happy Holidays! For this month's blog post, I am writing about the new mu2 and mu3 mu referencing that is available in nlmixr2 (actually nlmixr2est). I hope you have a good holiday season. blog.nlmixr2.org/blog/2024-12-1…

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mattfidler @mattfidler

11 months ago

In this month's blog post, I discuss importing `monolix` to `rxode2` and `nlmixr2`. This is one of the new imports in `babelmixr2` that allows translating inbetween `NONMEM`, `Monolix` and `nlmixr2`. blog.nlmixr2.org/blog/2024-10-2…

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mattfidler @mattfidler

12 months ago

nlmixr2 and rxode2 3.0 is out. It is a major release since there are some backward-incompatible changes. #nlmixr2 #rxode2 #rstats blog.nlmixr2.org/blog/2024-09-1…

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mattfidler @mattfidler

a year ago

In this month's blog, I am mentioning a useful feature in `rxode2` and `pmxTools` that isn't mentioned too much -- calculating derived PK parameters. Thought raising awareness of this feature might help someone's analysis go smoother. blog.nlmixr2.org/blog/2024-08-0…