Wild Idea Podcast
I recently joined my dear friend Bill Hodge on the The Wild Idea Podcast for a conversation about ecological resilience, climate adaptation, and how we think about wilderness in a […]
Author: azandis@gmail.com
Structural Equation Modeling in R
Introduction Today we are talking about structural equation models (SEM). There are lots of synonyms, sub-categories, and adjacent techniques that you may have heard before–covariance structure analysis, linear structural relations, […]
Text analysis using AI in R
Introduction Analyzing qualitative data is challenging. Such analyses are even more difficult when the topic is controversial and the results will drive important policy decisions. This post explores AI methods […]
UPDATE: Smartphone Hemispherical Image Analysis
When I first developed the method to estimate canopy metrics from smartphone spherical panoramas, I used a somewhat convoluted workflow involving command line image manipulation, a plugin for ImageJ to […]
Visualize mixed effect regressions in R with GGplot2
In this post, I will show some methods of displaying mixed effect regression models and associated uncertainty using non-parametric bootstrapping. This is kind of a follow-up to my previous post […]
Arctic Genes in Alaska Magazine
An article I wrote about an expedition to collect wood frogs in the Alaska Arctic is now online at Alaska Magazine. I’ve included the teaser below, but check out the […]
Biomass Pyramids and Funnel Plots in R with GGplot2
Every once in a while, I come across a plot form that is not in my ggplot repertoire. For example, I occasionally want to make a funnel plot in my […]
Plotting custom models with ggplot2 in R
Last week, I attended a talk at our local Yale data science group by my friend Matteo in which he presented an overview of ggplot2. During the questions after the […]
Web scraping and text analysis in R and GGplot2
I recently needed to learn text mining for a project at work. I generally learn more quickly with a real-world project. So, I turned to a topic I love: Wilderness, […]
Fractured Aviary
During the pandemic, my partner, Bayla, and I began taking daily walks down to Yale’s campus. We often noticed dead birds at the base of the glass walls that […]