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Arrowheads at each end of axis
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://unpkg.com/d3-jetpack"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| const svg = d3 | |
| .select('body') | |
| .append('svg') | |
| .attr('width', 500) | |
| .attr('height', 500); | |
| // Arrowhead defs | |
| svg.append('defs') | |
| .append('marker') | |
| .at({ | |
| id: 'arrowhead-right', | |
| refX: 5, | |
| refY: 5, | |
| markerWidth: 16, | |
| markerHeight: 13, | |
| }) | |
| .append('path') | |
| .at({ | |
| d: 'M 0 0 L 5 5 L 0 10', | |
| stroke: 'black', | |
| strokeWidth: 1, | |
| fill: 'none', | |
| }); | |
| svg.append('defs') | |
| .append('marker') | |
| .at({ | |
| id: 'arrowhead-left', | |
| refX: 0, | |
| refY: 5, | |
| markerWidth: 16, | |
| markerHeight: 13, | |
| }) | |
| .append('path') | |
| .at({ | |
| d: 'M 5 0 L 0 5 L 5 10', | |
| stroke: 'black', | |
| strokeWidth: 1, | |
| fill: 'none', | |
| }); | |
| const x = d3 | |
| .scaleLinear() | |
| .range([0, 400]) | |
| .domain([0, 10]); | |
| const xa = svg | |
| .append('g') | |
| .attr('class', 'axis') | |
| .attr('transform', 'translate(50,250)') | |
| .call(d3.axisBottom(x) | |
| .tickSizeInner(0) | |
| .tickPadding(6) | |
| .tickSizeOuter(0)); | |
| // append the markers at the start and end of our axis path | |
| xa.select('path').at({ markerEnd: 'url(#arrowhead-right)' }); | |
| xa.select('path').at({ markerStart: 'url(#arrowhead-left)' }); | |
| </script> | |
| </body> |
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