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A confession: I'm starting to hate choropleth maps. When it comes to comes to comparing U.S. states, especially where there's no obvious geographic pattern, a map is often the wrong choice. So, following my posts on responsive maps and legends, let's make a bar chart, and let's make it responsive: Percent of adults over 25 with at least a bachelor's degree: Median: Source: U.S. Census Bureau, via
Trying out D3's geographic features. Hover over a county: There's nothing special about this map. It's just US counties and states, with minimal interaction. I wanted to try out D3's mapping capabilities, and this made for good practice. The Good Creating a simple map in D3 is remarkably easy. Assuming you have a GeoJSON, drawing a path is as simple as: var counties = map.append('g') .attr('class'
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