HOWTO: Convert your CSV's to a reprojected GeoJSON with leaving the terminal.

readme.markdown

CSV to a reprojected geojson

I've never liked having to open up QGIS or ArcGIS to convert a CSV into a shapefile/geojson. It always seemed like there should be an easier way, and it turns out that there is.

First, you'll want to install @tmcw's csv2geojson library, and GDAL.

npm install -g csv2geojson && brew install gdal

Second, let's convert your CSV to a GeoJSON

csv2geojson data.csv > output.geojson

Lastly, depending on how you collect and use your data, that may be all you need to do. I like to store as much of my spatial data on Github as possible, which requires reprojecting the data from UTM Zone 19(EPSG:26919) to WGS 84(EPSG:4326). With ogr2ogr, this is pretty simple.

ogr2ogr -F geojson -s_srs epsg:26919 -t_srs epsg:4326 projected.geojson output.geojson

Hope that helps!

data.csv

output.geojson

projected.geojson

{
"type": "FeatureCollection",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
                                                                                
"features": [
{ "type": "Feature", "properties": { "long": "594162", "lat": "4932451" }, "geometry": { "type": "Point", "coordinates": [ -67.814745063622965, 44.539239545393343 ] } }
]
}