Counties using Mike Bostock's most excellent us-atlas.
Small difference: "make counties.json" will preserve properties.STATE & properties.COUNTY
Last active
March 11, 2017 21:35
-
-
Save pbogden/46face2bb2a465bbfd8c to your computer and use it in GitHub Desktop.
counties1
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| gz | |
| shp |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <title>counties1</title> | |
| <style> | |
| body { | |
| font: 20px sans-serif; | |
| } | |
| path { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| #info { | |
| position: absolute; | |
| top: 20px; | |
| left: 600px; | |
| } | |
| </style> | |
| <body> | |
| <div id="info"></div> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.19/topojson.min.js"></script> | |
| <script> | |
| var width = 960, height = 500; | |
| var path = d3.geo.path(); | |
| var info = d3.select("body").append("div") | |
| .attr("id", "info"); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| d3.json("counties.json", function(error, data) { | |
| if (error) throw error; | |
| features = topojson.feature(data, data.objects.counties).features; | |
| svg.selectAll("path") | |
| .data(features) | |
| .enter() | |
| .append("path") | |
| .attr("d", path) | |
| .on("mouseover", function(d) { var p = d.properties; info.html(p.COUNTY + ", " + p.STATE + "<br>FIPS: " + d.id) }); | |
| }); | |
| </script> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # Create counties.json preserving county name & state 2-character ID | |
| all: counties.json | |
| # Use Mike Bostock's most excellent us-atlas (rest of the makefile is equivalent) | |
| counties.json.orig: | |
| cd ../us-atlas; make topo/us-counties-10m-ungrouped.json | |
| cp ../us-atlas/topo/us-counties-10m-ungrouped.json counties.json.orig | |
| gz/countyp010_nt00795.tar.gz: | |
| curl 'http://dds.cr.usgs.gov/pub/data/nationalatlas/$(notdir $@)' -o $@ | |
| shp/us/counties-unfiltered.shp: gz/countyp010_nt00795.tar.gz | |
| rm -rf $(basename $@) | |
| mkdir -p $(basename $@) | |
| tar -xzm -C $(basename $@) -f $< | |
| for file in $(basename $@)/*; do chmod 644 $$file; mv $$file $(basename $@).$${file##*.}; done | |
| rmdir $(basename $@) | |
| # remove water counties (e.g., Great Lakes) | |
| shp/us/counties.shp: shp/us/counties-unfiltered.shp | |
| rm -f $@ | |
| ogr2ogr -f 'ESRI Shapefile' -where "FIPS NOT LIKE '%000'" $@ $< | |
| counties.json: shp/us/counties.shp | |
| mkdir -p $(dir $@) | |
| topojson \ | |
| -o $@ \ | |
| --no-pre-quantization \ | |
| --post-quantization=1e6 \ | |
| --simplify=7e-7 \ | |
| -p STATE,COUNTY \ | |
| --id-property=+FIPS \ | |
| -- $< |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment