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May 21, 2021 20:50
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Retrieve data from the Census API, build a table with D3.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| </head> | |
| <body> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var stats = 'B01001_001E,B17001_002E'; | |
| var census = 'http://api.census.gov/data/2015/acs/acs1?get=NAME,' + stats + '&for=urban+area:*'; | |
| var headerLabels = ['Name', 'Population', 'Poverty', '%']; | |
| var numberFormat = d3.format(','); | |
| d3.json(census, function(response) { | |
| console.log('json', response); | |
| var table = d3.select('body').append('table'); | |
| var thead = table.append('thead').append('tr'); | |
| var tbody = table.append('tbody'); | |
| // First item in response array is an array of column labels. | |
| // Not user-friendly so throw them away. | |
| response.shift(); | |
| response.forEach(function(row) { | |
| // Calculate percentage below the poverty line. | |
| row.push(((row[2] / row[1]) * 100).toFixed(2)); | |
| // Remove the urban area number identifier. | |
| row.splice(3,1); | |
| }); | |
| thead.selectAll('th') | |
| .data(headerLabels) | |
| .enter() | |
| .append('th') | |
| .text(function(d) { return d; }); | |
| tbody.selectAll('tr') | |
| .data(response) | |
| .enter() | |
| .append('tr') | |
| .selectAll('td') | |
| .data(function(d) { return d; }) | |
| .enter() | |
| .append("td").text(function(d, i) { | |
| if ( i === 1 || i === 2 ) { | |
| return numberFormat(d); | |
| } else { | |
| return d; | |
| } | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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