A Leaflet Map for Data.gov county, city, state, international resources
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Convert csv files to geoJson files. USE -----> https://github.com/mapbox/csv2geojson
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If the geoJson files lack coordinates, there are resources online for finding point coordinates, polygons, and multipolygons. -http://www.latlong.net/ #This is good for finding coordinates for cities -https://github.com/johan/world.geo.json/tree/master/countries/USA #This is good for finding polygon and multipolygon coordinates for US states
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I personally copied and pasted the coordinates to each json feature, perhaps/probably there is a better way. -https://github.com/mapbox/geojsonhint #This allows you to check/debug geojson files for errors -https://github.com/tmcw/geojson-join #Join a stream of GeoJSON against a dataset. -https://github.com/mapbox/geojsonio-cli #A cli for geojson.io -https://github.com/tmcw/geojson2dsv #Converts GeoJson to CSV -https://github.com/topojson/topojson
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You can use this url: http://geojson.io/#map=2/20.0/0.0 to check how your geoJson would look on a map very quickly.
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After your geoJson is ready, you can use leafletjs to create an interactive map. -http://leafletjs.com/ #Highly Recommend checking out their tutorials and Documentation, it is easy to follow and pick up 1)You will need to get map tiles for your map. -Check out Mapbox, OpenStreetMaps, Stamen for some map tiles. Mapbox charges after a certain limit. 1)https://www.mapbox.com/studio/styles/ 2)https://www.openstreetmap.org/#map=3/10.83/-17.40&layers=C 3)http://maps.stamen.com/#watercolor/12/37.7706/-122.3782 2)https://github.com/stefanocudini/leaflet-search #Use this to set up a search feature. Other pluggins available. 3) Check out the HTMl and JS in Map.html. It is commented and goes over the features of the map.