The fourth of a series of data visualizations on basic coding concepts. When you declare a variable, the next step is to assign it data!
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December 10, 2015 01:44
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Variable Declaration
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| width: 1024px; | |
| margin-top: 0; | |
| margin: auto; | |
| font-family: "Lato", "PT Serif", serif; | |
| color: #222222; | |
| padding: 0; | |
| font-weight: 300; | |
| line-height: 33px; | |
| -webkit-font-smoothing: antialiased; | |
| } | |
| .guide { | |
| fill: none; | |
| stroke: #7f8c8d; | |
| stroke-dasharray: 2px 10px; | |
| } | |
| .circle { | |
| stroke:#eee; | |
| } | |
| .c0{ | |
| fill: red; | |
| } | |
| .c1{ | |
| fill: blue; | |
| } | |
| .c2{ | |
| fill: green; | |
| } | |
| .c3{ | |
| fill: black; | |
| } | |
| .c4{ | |
| fill: pink; | |
| } | |
| .c5{ | |
| fill: brown; | |
| } | |
| .c6{ | |
| fill: purple; | |
| } | |
| .c7{ | |
| fill: orange; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 600, | |
| translate_speed = 3000; | |
| var svg = d3.select('body').append('svg') | |
| .attr('width', width) | |
| .attr('height', height); | |
| var p1 = svg.append('path') | |
| .attr('d', 'M'+500+','+100+'v'+200) | |
| .attr('class', 'guide') | |
| var p2 = svg.append('path') | |
| .attr('d', 'M'+500+','+300+'v'+200) | |
| .attr('class', 'guide') | |
| // Static Vector | |
| var assign = svg.append('text') | |
| .attr('x',730) | |
| .attr('y',105) | |
| .style('text-anchor', 'middle') | |
| .style('font-size', '24') | |
| .text('{ Assign Data to Variable }') | |
| var adjust = svg.append('text') | |
| .attr('x',730) | |
| .attr('y',305) | |
| .style('text-anchor', 'middle') | |
| .style('font-size', '24') | |
| .text('{ Adjust Variable Data }') | |
| var reassign = svg.append('text') | |
| .attr('x',730) | |
| .attr('y',505) | |
| .style('text-anchor', 'middle') | |
| .style('font-size', '24') | |
| .text('{ Free Variable Data }') | |
| // Model | |
| function translateAlong(path) { | |
| var l = path.getTotalLength(); | |
| return function(d, i, a) { | |
| return function(t) { | |
| var p = path.getPointAtLength(t * l); | |
| return "translate(" + (p.x - 75) + "," + (p.y - 75/2) + ")"; | |
| }; | |
| }; | |
| } | |
| function alter(){ | |
| var g = d3.select(this) | |
| g.select('circle') | |
| .transition() | |
| .duration(translate_speed/10) | |
| .ease('sin') | |
| .attr("r", function() { | |
| return d3.select(this).attr('r') / (Math.random()*1.3 + 0.4) | |
| }); | |
| g.transition() | |
| .duration(translate_speed) | |
| .ease('sin') | |
| .attrTween("transform", translateAlong(p2.node())) | |
| .transition().duration(500) | |
| .each("end", flank); | |
| } | |
| function flank(){ | |
| d3.select(this).select('rect') | |
| .transition() | |
| .duration(500) | |
| .style('fill-opacity', '0.1') | |
| .remove(); | |
| d3.select(this).select('circle') | |
| .transition() | |
| .duration(translate_speed/10) | |
| .attr("transform", function() { | |
| var t = d3.select(this).attr('transform').split(','); | |
| return "translate("+ (-150)+","+t[1];}) | |
| .ease('sin') | |
| .transition() | |
| .duration(500) | |
| .remove() | |
| } | |
| function assign_variable(){ | |
| var g = svg.append('g') | |
| .attr('transform', 'translate(50,60)'); | |
| var circle = g.append('circle') | |
| .attr('r', Math.random()*12+4.25) | |
| .attr('transform', 'translate(75,32.5)') | |
| .attr('class', 'circle c'+Math.floor(Math.random()*8)) | |
| g.transition() | |
| .duration(translate_speed) | |
| .attr("transform", function() { | |
| var t = d3.select(this).attr('transform').split(','); | |
| return "translate("+ (425)+","+t[1];}) | |
| .ease('sin') | |
| .each("end", stored_variable); | |
| } | |
| function stored_variable(){ | |
| var g = d3.select(this); | |
| var box = g.append('rect') | |
| .attr('width', 150) | |
| .attr('height', 75) | |
| .style('fill', '#eee') | |
| .style('fill-opacity', '0.5'); | |
| g.transition() | |
| .duration(translate_speed) | |
| .ease('sin') | |
| .attrTween("transform", translateAlong(p1.node())) | |
| .each("end", alter); | |
| } | |
| // Run model | |
| setInterval(assign_variable, 1800) | |
| d3.select(self.frameElement).style("height", (height+20) + "px"); | |
| </script> |
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