Steps for converting Shapefiles to unitedstates.io/districts

convert_directory.sh

#!/bin/bash

declare -A ordinals=(["01"]="1st" ["02"]="2nd" ["03"]="3rd" ["04"]="4th" ["05"]="5th" ["06"]="6th" ["07"]="7th" ["08"]="8th" ["09"]="9th" ["10"]="10th" ["11"]="11th" ["12"]="12th" ["13"]="13th" ["14"]="14th" ["15"]="15th" ["16"]="16th" ["17"]="17th" ["18"]="18th")

for filename in pennsylvania_xa*; do
  DISTRICT_NUM=$(cat ${filename} | jq -r '.features[0].id | tonumber')
  DISTRICT_ID=$(cat ${filename} | jq -r '.features[0].id')
  JSON_CODE="PA-${DISTRICT_ID}"
  JSON_ORD=${ordinals[$DISTRICT_ID]}
  JSON_DIST="Pennsylvania ${JSON_ORD}"
  DISTRICT_DIR="PA-${DISTRICT_NUM}"
  mkdir -p ${DISTRICT_DIR}

  jq --arg 'JSON_CODE' "${JSON_CODE}" --arg 'JSON_DIST' "${JSON_DIST}" '.features[0].geometry | {geometry: ., type: "Feature", properties: { Code: $JSON_CODE, District: $JSON_DIST }}' ${filename} > "${DISTRICT_DIR}/shape.geojson"

  tokml "${DISTRICT_DIR}/shape.geojson" > "${DISTRICT_DIR}/shape.kml"
done

gistfile1.txt

requires jq, tokml, mapmaker

1) Use mapmaker-gui to verify shape, export to geojson
  a. I used export options "drop-table id-field=DISTRICT" for PA

2) Split the state into districts
  $ geojsplit -v -l 0 -a 2 -o 2018 pennsylvania.json
  # the first file is empty
  $ rm pennsylvania_xaa.geojson

3) Convert to unitedstates/districts format and make kml
  $ ./convert_directory.sh