51-Class hierarchical clustering of ecoregions into biodiversity driver zones

Based on the most excellent dendrogram work of Mike Bostock leveraging d3, this shows the nested scales by which the ~10,000 global ecoregions combine in clusters that have similar drivers of species richness (land use intensity, climate, etc.). Data is from forthcoming work by Bill Morris on geographically-weighted regression and ecological segmentation; it would be "done" rather than "forthcoming" if Bill would spend less time on dataviz and more on writing his %$&#ing dissertation.

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Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js