New Course: Geospatial Mapping in D3 Posted on June 20, 2016 In this course, you'll learn: How to work with shapefiles using ogr2ogr How to convert GeoJSON to TopoJSON How to make maps in d3 How to automate processing files with “make” Get a Free Trial to Pluralsight Here d3, gdal, geospatial data, mapping, maps, ogr2ogr, topojson