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January 22, 2022 20:27
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <body> | |
| <script src="https://d3js.org/d3.v3.min.js"></script> | |
| <script src="https://rawgit.com/jasondavies/d3-cloud/master/build/d3.layout.cloud.js"></script> | |
| <script> | |
| //Based on https://github.com/jasondavies/d3-cloud/blob/master/examples/simple.html | |
| // Encapsulate the word cloud functionality | |
| function wordCloud(selector) { | |
| var fill = d3.scale.category20(); | |
| //Construct the word cloud's SVG element | |
| var svg = d3.select(selector).append("svg") | |
| .attr("width", 500) | |
| .attr("height", 500) | |
| .append("g") | |
| .attr("transform", "translate(250,250)"); | |
| //Draw the word cloud | |
| function draw(words) { | |
| var cloud = svg.selectAll("g text") | |
| .data(words, function (d) { return d.text; }) | |
| //Entering words | |
| cloud.enter() | |
| .append("text") | |
| .style("font-family", "Impact") | |
| .style("fill", function (d, i) { return fill(i); }) | |
| .attr("text-anchor", "middle") | |
| .attr('font-size', 1) | |
| .text(function (d) { return d.text; }); | |
| //Entering and existing words | |
| cloud | |
| .transition() | |
| .duration(600) | |
| .style("font-size", function (d) { return d.size + "px"; }) | |
| .attr("transform", function (d) { | |
| return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")"; | |
| }) | |
| .style("fill-opacity", 1); | |
| //Exiting words | |
| cloud.exit() | |
| .transition() | |
| .duration(200) | |
| .style('fill-opacity', 1e-6) | |
| .attr('font-size', 1) | |
| .remove(); | |
| } | |
| //Use the module pattern to encapsulate the visualisation code. We'll | |
| // expose only the parts that need to be public. | |
| return { | |
| //Recompute the word cloud for a new set of words. This method will | |
| // asycnhronously call draw when the layout has been computed. | |
| //The outside world will need to call this function, so make it part | |
| // of the wordCloud return value. | |
| update: function (words) { | |
| d3.layout.cloud().size([500, 500]) | |
| .words(words) | |
| .padding(5) | |
| .rotate(function () { return ~~(Math.random() * 2) * 90; }) | |
| .font("Impact") | |
| .fontSize(function (d) { return d.size; }) | |
| .on("end", draw) | |
| .start(); | |
| } | |
| } | |
| } | |
| function render_wordcloud(arr, selector) { | |
| wordCloud(selector).update(arr) | |
| } | |
| </script> | |
| </body> |
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