Visualising U.S. gun laws

2018-03-10T10:46:01Z (GMT) by Guido Grimm
These files provide the data used for the following post on Genealogical World of Networks (http:///

Grimm GW. Posted 5/3/2018. Visualizing U.S. gun laws. The Genealogical World of Phylogenetic Networks (ed. by D. Morrison).

The data matrix scores GunsToCarry's breakdown of U.S. gun legislation as a set of 17 binary and ternary characters, which is then used to infer inter-state pairwise (mean/Hamming) distances.

I provide the data matrix in two formats:
*.nex — A fully annotated version (character states labelled) generated with (and optimised for) Mesquite (
*.simple.nex — Version in (old) NEXUS format (data block) showing the set-up for the distance analysis such as the used weighting scheme

Results are provided raw and graphically enhanced
*.dst — the resultant pairwise distance matrix in (extended) PHYLIP format
*.dist — the resultant neighbour-net, Splits-NEXUS-formatted (can be opened and visualised with SplitsTree,, and R/phangorn,
*.png – graphically enhanced versions of the resultant neighbour-net as shown in the original post and the related long-read at Res.I.P. (http:///

Listed programmes are free-to-use software, *.simple.nex and *.dst files can also be viewed with any text-editor (*.nex and *.dist can be viewed but include complex additional code-lines)