mapMaker

tutorial on initializing a D3 map

1. Install Packages:

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Ubuntu: PREP: sudo apt-get install software-properties-common GDAL: sudo add-apt-repository ppa:ubuntugis/ppa sudo apt-get update sudo apt-get install gdal-bin TOPOJSON: npm install -g topojson

MAC: GDAL: homebrew install gdal TOPOJSON: npm install -g topojson

Double check that they were installed!

2. Grabbing geological datum

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MAP DATA: 1. physical location: http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_admin_0_map_subunits.zip

2. populated places: http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_populated_places.zip

2. Converting & filtering data: A. convert both files into GeoJSON ogr2ogr -f GeoJSON
   -where "ADM0_A3 IN('USA')"
   subunits.json
   ne_10m_admin_0_subunits.shp

    	ogr2ogr -f GeoJSON\ 
    	-where "ADM0_A3 = 'USA' and SCALERANK <8"\
    	states.json\
    ne_10m_populated_places.shp
   

   B. Merge Files move files into the same folder topojson -0 usa.json
   --id-property SU_A3
   --properties name=NAME
   -- subunits.json places.json