mbostock/.block

## .block
license:gpl-3.0
height:680
border:no

## .gitignore
cb_*
topo.json

## README.md

      
    Raw
  

              README.md
            
          
    Source: American Community Survey, 2014 5-Year Estimate

  
## index.html
<!DOCTYPE html>
<img src="topo.svg" width="960" height="680">

## legend.svg

      
Display the source blob

    
Display the rendered blob

    
    Raw
  

              legend.svg
            
          
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## package.json
{
  "private": true,
  "license": "gpl-3.0",
  "author": {
    "name": "Mike Bostock",
    "url": "https://bost.ocks.org/mike"
  },
  "scripts": {
    "prepublish": "bash prepublish"
  },
  "devDependencies": {
    "d3-scale": "^1.0.4",
    "d3-scale-chromatic": "^1.1.0",
    "d3-geo-projection": "^1.2.1",
    "ndjson-cli": "^0.3.0",
    "shapefile": "^0.5.9",
    "topojson-server": "^2.0.0",
    "topojson-client": "^2.1.0",
    "topojson-simplify": "^2.0.0"
  }
}

## prepublish
#!/bin/bash

# U.S. Albers
PROJECTION='d3.geoAlbersUsa().scale(1280).translate([480, 300])'

# The state FIPS codes.
STATES="01 02 04 05 06 08 09 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 44 45 46 47 48 49 50 51 53 54 55 56"

# The ACS 5-Year Estimate vintage.
YEAR=2014

# The display size.
WIDTH=960
HEIGHT=680

# Download the census tract boundaries.
# Extract the shapefile (.shp) and dBASE (.dbf).
# Download the census tract population estimates.
for STATE in ${STATES}; do
  if [ ! -f cb_${YEAR}_${STATE}_tract_500k.shp ]; then
    curl -o cb_${YEAR}_${STATE}_tract_500k.zip \
      "http://www2.census.gov/geo/tiger/GENZ${YEAR}/shp/cb_${YEAR}_${STATE}_tract_500k.zip"
    unzip -o \
      cb_${YEAR}_${STATE}_tract_500k.zip \
      cb_${YEAR}_${STATE}_tract_500k.shp \
      cb_${YEAR}_${STATE}_tract_500k.dbf
  fi
  if [ ! -f cb_${YEAR}_${STATE}_tract_B01003.json ]; then
    curl -o cb_${YEAR}_${STATE}_tract_B01003.json \
      "http://api.census.gov/data/${YEAR}/acs5?get=B01003_001E&for=tract:*&in=state:${STATE}&key=${CENSUS_KEY}"
  fi
done

# Construct TopoJSON.
if [ ! -f topo.json ]; then
  geo2topo -n \
    tracts=<(for STATE in ${STATES}; do \
        ndjson-join 'd.id' \
          <(shp2json -n cb_${YEAR}_${STATE}_tract_500k.shp \
            | geoproject -n "${PROJECTION}" \
            | ndjson-map 'd.id = d.properties.GEOID, d') \
          <(ndjson-cat cb_${YEAR}_${STATE}_tract_B01003.json \
            | ndjson-split 'd.slice(1)' \
            | ndjson-map '{id: d[1] + d[2] + d[3], B01003: +d[0]}') \
          | ndjson-map -r d3=d3-array 'd[0].properties = {density: d3.bisect([1, 10, 50, 200, 500, 1000, 2000, 4000], (d[1].B01003 / d[0].properties.ALAND || 0) * 2589975.2356)}, d[0]'; \
      done) \
    | topomerge -k 'd.id.slice(0, 5)' counties=tracts \
    | topomerge -k 'd.id.slice(0, 2)' states=counties \
    | topomerge --mesh -f 'a !== b' counties=counties \
    | topomerge --mesh -f 'a !== b' states=states \
    | topomerge -k 'd.properties.density' tracts=tracts \
    | toposimplify -p 1 -f \
    | topoquantize 1e5 \
    > topo.json
fi

# Convert to SVG (while dropping the last line).
cat \
  <(topo2geo -n < topo.json tracts=- \
    | ndjson-map -r d3=d3-scale-chromatic '(d.properties.title = d.id, d.properties.fill = d3.schemeOrRd[9][d.id], d)') \
  <(topo2geo -n < topo.json counties=- \
    | ndjson-map '(d.properties.stroke = "black", d.properties.strokeWidth = 0.5, d.properties.strokeOpacity = 0.3, d)') \
  <(topo2geo -n < topo.json states=- \
    | ndjson-map '(d.properties.stroke = "black", d.properties.strokeOpacity = 0.3, d)') \
  | geo2svg --stroke=none -n -p 1 -w ${WIDTH} -h ${HEIGHT} \
  | sed '$d' \
  > topo.svg

# Insert the legend.
tail -n +4 \
  < legend.svg \
  >> topo.svg

## preview.jpg

      
    Raw
  

              preview.jpg
            
          
## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## topo.svg

      
Display the source blob

    
Display the rendered blob

    
    Raw
  

              topo.svg
            
          
      Loading

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	<!DOCTYPE html>
	<img src="topo.svg" width="960" height="680">
	{
	"private": true,
	"license": "gpl-3.0",
	"author": {
	"name": "Mike Bostock",
	"url": "https://bost.ocks.org/mike"
	},
	"scripts": {
	"prepublish": "bash prepublish"
	},
	"devDependencies": {
	"d3-scale": "^1.0.4",
	"d3-scale-chromatic": "^1.1.0",
	"d3-geo-projection": "^1.2.1",
	"ndjson-cli": "^0.3.0",
	"shapefile": "^0.5.9",
	"topojson-server": "^2.0.0",
	"topojson-client": "^2.1.0",
	"topojson-simplify": "^2.0.0"
	}
	}
	#!/bin/bash

	# U.S. Albers
	PROJECTION='d3.geoAlbersUsa().scale(1280).translate([480, 300])'

	# The state FIPS codes.
	STATES="01 02 04 05 06 08 09 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 44 45 46 47 48 49 50 51 53 54 55 56"

	# The ACS 5-Year Estimate vintage.
	YEAR=2014

	# The display size.
	WIDTH=960
	HEIGHT=680

	# Download the census tract boundaries.
	# Extract the shapefile (.shp) and dBASE (.dbf).
	# Download the census tract population estimates.
	for STATE in ${STATES}; do
	if [ ! -f cb_${YEAR}_${STATE}_tract_500k.shp ]; then
	curl -o cb_${YEAR}_${STATE}_tract_500k.zip \
	"http://www2.census.gov/geo/tiger/GENZ${YEAR}/shp/cb_${YEAR}_${STATE}_tract_500k.zip"
	unzip -o \
	cb_${YEAR}_${STATE}_tract_500k.zip \
	cb_${YEAR}_${STATE}_tract_500k.shp \
	cb_${YEAR}_${STATE}_tract_500k.dbf
	fi
	if [ ! -f cb_${YEAR}_${STATE}_tract_B01003.json ]; then
	curl -o cb_${YEAR}_${STATE}_tract_B01003.json \
	"http://api.census.gov/data/${YEAR}/acs5?get=B01003_001E&for=tract:*&in=state:${STATE}&key=${CENSUS_KEY}"
	fi
	done

	# Construct TopoJSON.
	if [ ! -f topo.json ]; then
	geo2topo -n \
	tracts=<(for STATE in ${STATES}; do \
	ndjson-join 'd.id' \
	<(shp2json -n cb_${YEAR}_${STATE}_tract_500k.shp \
	\| geoproject -n "${PROJECTION}" \
	\| ndjson-map 'd.id = d.properties.GEOID, d') \
	<(ndjson-cat cb_${YEAR}_${STATE}_tract_B01003.json \
	\| ndjson-split 'd.slice(1)' \
	\| ndjson-map '{id: d[1] + d[2] + d[3], B01003: +d[0]}') \
	\| ndjson-map -r d3=d3-array 'd[0].properties = {density: d3.bisect([1, 10, 50, 200, 500, 1000, 2000, 4000], (d[1].B01003 / d[0].properties.ALAND \|\| 0) * 2589975.2356)}, d[0]'; \
	done) \
	\| topomerge -k 'd.id.slice(0, 5)' counties=tracts \
	\| topomerge -k 'd.id.slice(0, 2)' states=counties \
	\| topomerge --mesh -f 'a !== b' counties=counties \
	\| topomerge --mesh -f 'a !== b' states=states \
	\| topomerge -k 'd.properties.density' tracts=tracts \
	\| toposimplify -p 1 -f \
	\| topoquantize 1e5 \
	> topo.json
	fi

	# Convert to SVG (while dropping the last line).
	cat \
	<(topo2geo -n < topo.json tracts=- \
	\| ndjson-map -r d3=d3-scale-chromatic '(d.properties.title = d.id, d.properties.fill = d3.schemeOrRd[9][d.id], d)') \
	<(topo2geo -n < topo.json counties=- \
	\| ndjson-map '(d.properties.stroke = "black", d.properties.strokeWidth = 0.5, d.properties.strokeOpacity = 0.3, d)') \
	<(topo2geo -n < topo.json states=- \
	\| ndjson-map '(d.properties.stroke = "black", d.properties.strokeOpacity = 0.3, d)') \
	\| geo2svg --stroke=none -n -p 1 -w ${WIDTH} -h ${HEIGHT} \
	\| sed '$d' \
	> topo.svg

	# Insert the legend.
	tail -n +4 \
	< legend.svg \
	>> topo.svg