Created
November 5, 2017 13:41
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Line generator // source https://jsbin.com/layara
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| <!DOCTYPE html> | |
| <html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <title>Line generator</title> | |
| <script type="text/x-mathjax-config"> | |
| MathJax.Hub.Config({ | |
| tex2jax: { | |
| inlineMath: [ ['$','$'], ['\\(','\\)'] ], | |
| processEscapes: true | |
| } | |
| }); | |
| </script> | |
| <script type="text/javascript" async | |
| src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS_CHTML"> | |
| </script> | |
| </head> | |
| <body> | |
| <h1>The cardinal sine function</h1> | |
| <h2>$f(x)=\frac{\sin(x)}{x}$</h2> | |
| <svg width="900" height="400"></svg> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script> | |
| <script> | |
| var lineGenerator = d3.line(); | |
| sineCurve = []; | |
| for (var i=0;i<1000;i++){ | |
| sineCurve.push([i-120, 80*Math.sin(i/30)/((i-110)*0.007+0.0001)+200]); | |
| } | |
| var pathData = lineGenerator(sineCurve); | |
| // Select the path element and set its d attribute | |
| d3.select('svg').append('path') | |
| .attr('d', pathData) | |
| .attr('stroke', 'magenta') | |
| .attr('stroke-width', '6') | |
| .attr('fill','none') | |
| .style("mix-blend-mode", "darken"); | |
| sineCurve = []; | |
| for (var i=0;i<1000;i++){ | |
| sineCurve.push([i-140, 80*Math.sin(i/30)/((i-110)*0.006+0.0001)+200]); | |
| } | |
| var pathData = lineGenerator(sineCurve); | |
| d3.select('svg').append('path') | |
| .attr('d', pathData) | |
| .attr('stroke', 'cyan') | |
| .attr('stroke-width', '6') | |
| .attr('fill','none') | |
| .style("mix-blend-mode", "darken"); | |
| sineCurve = []; | |
| for (var i=0;i<1000;i++){ | |
| sineCurve.push([i-160, 80*Math.sin(i/30)/((i-110)*0.005+0.0001)+200]); | |
| } | |
| var pathData = lineGenerator(sineCurve); | |
| d3.select('svg').append('path') | |
| .attr('d', pathData) | |
| .attr('stroke', 'yellow') | |
| .attr('stroke-width', '6') | |
| .attr('fill','none') | |
| .style("mix-blend-mode", "darken"); | |
| </script> | |
| </body> | |
| </html> |
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A first-try of plotting math function with D3.js.