Andrew Marx
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andrewmarx.bsky.social
Andrew Marx
@andrewmarx.bsky.social
Wildlife ecologist, geneticist, computer programmer, Ph.D. dropout. Trying to create better tools for scientists. R packages: samc (author), gdistance (maintainer). Website: https://andrewmarx.github.io/
A couple of weeks since my last post. Rudimentary menus, UI, more physics, gamepad input, terrain, selectable levels/airboats, and VR up and running.

#godot #gamedev
December 10, 2025 at 4:58 AM
New personal project. First step: implement realistic-ish physics for airboats. Took a few weekends, but it's getting there.

#godot #gamedev #physics
November 23, 2025 at 11:52 PM
Prototyping a video idea with #Manim. #ecology #markrecapture
September 1, 2025 at 10:39 PM
I'm live on Twitch. Will be working on #samc things for a few hours. Feel free to join if you're interested in samc and would like to chat about it.
August 15, 2025 at 2:23 PM
I'm live on Twitch. Will be working on #samc stuff for a couple hours or so. Feel free to join if you're interested in samc and would like to chat about it.
August 8, 2025 at 2:35 PM
Reposted by Andrew Marx
The drawing and annotation tools in Radical Pie are finished! Now, I can type an equation and add highlighting, arrows, labels, etc., as shown in the following examples. All drawing objects are attached to anchor points in the equation, so they move and resize dynamically.
August 8, 2025 at 12:32 AM
My first live stream has started. I'm working on some ideas for samc, so this is a good chance for anyone interested in samc to come and chat about it. www.twitch.tv/andrewjmarx
andrewjmarx - Twitch
First stream/test. Wildlife ecologist tries to figure out Dijkstra's algorithm for SAMC (spatial absorbing Markov chains)
www.twitch.tv
August 1, 2025 at 4:00 PM
Starting later today, I'll be hosting a weekly live stream where I work on projects related to science, ecology, and conservation. It'll be a place where anyone interested can join my chat, hang out, and ask questions about what I'm working on.
andrewmarx.github.io/site/blog/st...
Streaming for Science: A Grassroots Approach
Over the past few years, I’ve had a lingering idea: that streaming could be a platform for building grassroots support to develop scientific tools. It’s time to stop procrastinating and give it a shot...
andrewmarx.github.io
August 1, 2025 at 10:53 AM
Setting up some new projects that will hopefully have me a lot more active here. The first step was a ground-up rebuild of my personal site with Hugo: andrewmarx.github.io
It's still in progress, but I may end up making it a theme that others can use if there is interest.
Andrew Marx
andrewmarx.github.io
June 9, 2025 at 2:28 AM
Reposted by Andrew Marx
Please share:

New opportunity➡️

University of Cambridge has a new program to provide fully funded opportunities for 5 #Brazilian Mphil students a year!

For more details and opportunities to link up with the Conservation Research institute, see:

conservation.cam.ac.uk/suzano-maste...
conservation.cam.ac.uk
November 21, 2024 at 8:16 AM
Reposted by Andrew Marx
Bluesky is built to make social more like the Web again, so we will never suppress links. Link to your writing, your art, your personal site — this is the social internet, designed from the ground up to be open and interoperable.
Hard to describe as a journalist how grateful I am to have a text-based app that does not suppress hyperlinks. I don’t know if people realize exactly how hostile the corporate internet has gotten toward news.
November 12, 2024 at 5:16 AM
Reposted by Andrew Marx
If you're curious why everybody's username is a domain, it's because every user is essentially a website
October 20, 2024 at 9:20 PM
My attempt to animate net visitation, or movement flow, from samc. Background grid is the net visitation map, which is really an aggregate of directional components. The moving lines are somewhat better at showing those components (with some significant caveats). #samc #Manim
November 3, 2024 at 7:23 PM
Toying around with #Manim part 2
November 1, 2024 at 6:24 PM
Version 4 of the samc R package is now available on CRAN. Input options for net visitation (aka movement flow, aka 'current' in Circuitscape) are now fully comprehensive. #samc #rstats andrewmarx.github.io/samc/news/in...
Changelog
andrewmarx.github.io
October 31, 2024 at 4:28 PM
Finally trying Manim
#manim
October 13, 2024 at 1:32 PM