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Bayesian SEM with BRMS

Note: for the most up to date version of this, see this post on rpubs Background So, it looks like brms version 2.0 implements multivariate responses – and hence piecewise Structural Equation Modeling in a Bayesian framework. After https://github.com/paul-buerkner/brms/issues/303, it became clear that while one cannot do tests of D-separation,...

Introducing the Open Derby (guest post)

Ensuring openness and reproducibility in ecology is an ongoing challenge, although open tools (e.g., R Studio, Github) are free to use, and user support is everywhere. To illustrate how ecology collaborations can fit within an open science framework, we had the idea of running an ‘Open Derby’. Similar to a research derby, where grad students and post-docs...

Which library to use to teach linear models & likelihood

I’ve been teaching likelihood to grad students for the past few years using the wonderful bbmle package from Ben Bolker. I really love it’s flexibility and the way you can get students into fitting anything their imagination can countenance. But there’s a small cost to that. First, their imagination, when they first meet likelihood, is….not ready. I...

Linear Model Power Analysis with Dplyr

I really liked the power analysis example I gave in class today. I feel like I’m finally firing on all cylinders with the tidyverse. So I thought I would post it here, in case it was of use to anyone! Power OK, we can fit and evluate linear regression models, but what about their power? Let’s look at our seal fit again – maybe we want to know...

You Complete Me

There’s a feature that is either new or I haven’t noticed before in the new release of tidyr that is making me giddy with giddiness. The complete function. This seems odd. Why would just one function make you giddy, Jarrett? Why not all of them? It’s making me so happy as it solves a problem that just took a substantial degree of thought and waaaay...

Other Writings about Parenting & Climate Change by Scientists

OK, so, I spoke too soon. There are at least a few stabs by scientists writing about being a parent who studies climate/environmental change. As folk send me more, I’ll try and keep this list updated. While there’s some great stuff here, I feel like this is an empty niche for some great writing. Maybe you want to contribute, too? Towards that end,...

Parenting as a Scientist in the Age of Climate Change

An old friend with a new child asked me if I know any climate change scientists or global change biologists who are parents and have written cogently about being parents in the era of climate change. Off of the top of my head, I couldn’t think of any (prove me wrong, internet), but, heck, I’m one myself. Here I am, staring down the barrel of hitting...

Rafe Sagarin and Passion in The Life Scientific

How to process something like Rafe Sagarin’s senseless passing? For those who never encountered him, Rafe was a wonderful marine ecologist whose body of work was as varied and eclectic as can be, from classic papers on long-term effects of climate change in Science and Ecological Monograph to books on how the natural world can help us deal with risk,...

Spicier Analyses with Interactive R Leaflet Maps

Who wants to make a kickass, public-friendly, dynamic, online appendix with a map for their papers? ME! (and you, right?) Let’s talk about a cool way to make your data sing to a much broader audience than a static image. Last time, I mentioned that I had also been playing the Rstudio’s Leaflet package. For those who don’t know, Leaflet is a javascript...

MEOW! It’s Marine Ecoregions in R!

So, I’m on paternity leave (yay! more on that another day – but HOMG, you guys, my daughter is amazing!) and while my daughter is amazing, there are many hours in the day and wee morning where I find myself rocking slowly back and forth, knowing that if I stop even for a second, this little bundle of cute sleeping away in the wrap will wake and howl. So,...

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