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June 16, 2015 23:36
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d3 Nest data example
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Nested Data example </title> | |
| </head> | |
| <body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js" charset="utf-8"></script> | |
| <script src="nested.js"></script> | |
| </body> | |
| </html> |
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| var rootNode = d3.select('body').append('svg'); | |
| rootNode.attr('width', 1000).attr('height', 1000); | |
| var data = [ | |
| {'radius': 5, 'color': 'green', 'text': 'hello'}, | |
| {'radius': 6, 'color': 'green', 'text': 'hello'}, | |
| {'radius': 7, 'color': 'green', 'text': 'hello'}, | |
| {'radius': 8, 'color': 'green', 'text': 'hello'}, | |
| {'radius': 9, 'color': 'green', 'text': 'hello'}, | |
| {'radius': 10, 'color': 'green', 'text': 'hello'} | |
| ]; | |
| var data2 = [ | |
| {'radius': 1, 'color': 'red', 'text': 'oh no'}, | |
| {'radius': 16, 'color': 'red', 'text': 'oh no'}, | |
| {'radius': 17, 'color': 'red', 'text': 'oh no'}, | |
| {'radius': 18, 'color': 'red', 'text': 'oh no'}, | |
| {'radius': 25, 'color': 'red', 'text': 'oh no'} | |
| ]; | |
| nestedBinding(data); | |
| setTimeout(function (){ | |
| console.log('timeout called'); | |
| nestedBinding(data2); | |
| }, 2000); | |
| function nestedBinding(data){ | |
| console.log('bindDataBrokenUpdate data', data); | |
| var allGroups = rootNode.selectAll('g').data(data); | |
| var groupEnter = allGroups.enter().append('g'); | |
| allGroups.exit().remove(); | |
| groupEnter.attr('transform', function (d, i){ | |
| return 'translate('+ (50) +','+ ((i+1) * 50) +')'; | |
| }); | |
| groupEnter.append('circle') | |
| .attr('cx', 0) | |
| .attr('cy', 0) | |
| .attr('r', 0); | |
| groupEnter.append('text'); | |
| var groupMerge = rootNode.selectAll('g'); | |
| // CANNOT use selectAll or the data is flattened (SelectAll on a SelectAll is bad) | |
| groupMerge.select('circle').transition() | |
| .attr('r', function (d){ | |
| return d.radius; | |
| }) | |
| .style('fill',function (d){ | |
| return d.color; | |
| }); | |
| // CANNOT use selectAll or the data is flattened (SelectAll on a SelectAll is bad) | |
| groupMerge.select('text').transition() | |
| .text(function (d){ | |
| return d.text; | |
| }); | |
| } | |
| function bindDataParentNode(data){ | |
| console.log('bindDataParentNode data', data); | |
| var allGroups = rootNode.selectAll('g').data(data); | |
| var groupEnter = allGroups.enter().append('g'); | |
| allGroups.exit().remove(); | |
| groupEnter.attr('transform', function (d, i){ | |
| return 'translate('+ (50) +','+ ((i+1) * 50) +')'; | |
| }); | |
| groupEnter.append('circle') | |
| .attr('cx', 0) | |
| .attr('cy', 0) | |
| .attr('r', 0); | |
| groupEnter.append('text'); | |
| var groupMerge = rootNode.selectAll('g'); | |
| groupMerge.selectAll('circle').transition() | |
| .attr('r', function (){ | |
| var data = d3.select(this.parentNode).data()[0]; | |
| return data.radius; | |
| }) | |
| .style('fill',function (){ | |
| var data = d3.select(this.parentNode).data()[0]; | |
| return data.color; | |
| }); | |
| groupMerge.selectAll('text').transition() | |
| .text(function (){ | |
| var data = d3.select(this.parentNode).data()[0]; | |
| return data.text; | |
| }); | |
| } |
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