TopoJSON State Selection

Sometimes you do not want to display the US and all its counties. Sometimes you just want one or some states. This page will allow you to select the state(s) you want to display the counties and generate a TopoJSON file representing the selection.

Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida	Geogia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine	Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire	New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island	South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin
Wyoming

Guide

Data for processing is preloaded from a local copy of Mike Bostocks map. Feel free to clear and load your own. NOTE: It should be formatted as Mike's below. In other words, just use Mike's JSON map.
"Load Data" will clear and reload the local copy of the data.
ctrl + shift + i to open console for information during processing in Chrome
Every time "Process Data" is clicked the "Completed JSON" file is rebuilt with the states selection above in the "e;Completed JSON" window below.
Clicking "Process Data" without any checkboes selected will produce an empty map.
Source data from Mike Bostock https://bl.ocks.org/mbostock/raw/4090846/us.json
More on this JSON file format can be cound here at github: https://github.com/topojson/topojson-specification/blob/master/README.md#11-examples
https://github.com/topojson/us-atlas
Select all the content from the "Completed JSON" window and paste in notepad, or click "Copy to clipboard" to select all and copy, then open notepad and paste.

Data

FIPS codes for States A - C are 01 - 09 leading FIPS and only have 4 digits since they are cataloged with the leading 0 having been omitted, so for instance 01 Alabama will have FIPS codes 1### as opposed to 01###. However they are represented as 01 when we do the county count in the Developers Tool Console for digit count consistency of a two digit representation.
FIPS codes are called "id" in the data.

Input:

Completed JSON: