我是使用d3时间轴插件(https://github.com/jiahuang/d3-timeline),现在我已经成功让可视化工具读取到我的数据。但是,我现在需要将一个特定学生的所有条目显示在同一行上,而不是单独显示每个条目。
CSV数据如下:
CSV数据如下:
Start,End,Student,Event Type,tooltip
2015-May-27 20:08:15,2015-May-27 20:08:21,Student 338,Pretest,Student 338 spent 00:00:06 on Biological Chemistry test. Student scored 100%.
2015-May-27 20:08:21,2015-May-27 20:08:30,Student 338,Learning Path,Student 338 spent 00:00:09 on Biological Buffers Website.
2015-May-27 20:08:30,2015-May-27 20:08:34,Student 338,Learning Path,Student 338 spent 00:00:04 on Organic Molecules Textbook.
2015-May-27 20:08:34,2015-May-27 20:08:36,Student 338,Learning Path,Student 338 spent 00:00:03 on Nucleic Acid Structure and Function Textbook 2.
文件长这样:
<script type="text/javascript">
window.onload = function() {
var width = 800;
var height = 700;
var parseDate = d3.time.format("%Y-%b-%d %H:%M:%S").parse; //With parseDate, I define what my time data looks like for d3
d3.csv("https://dl.dropboxusercontent.com/u/42615722/LeaP/biology-course2.csv", function(d){
return {
label : d.Student,
eventType: d["Event Type"],
times:[{"starting_time" : parseDate(d.Start),
"ending_time" : parseDate(d.End)}], //the timeline plugin is looking for a times array of objects with these keys so they must be defined.
info: d.tooltip
};
}, function(data) {
console.log(data);
function timelineRect() {
var colorScale = d3.scale.ordinal().range(['#ed5565','#ffce54','#48cfad','#5d9cec','#ec87c0','#ac92ec','#4fc1e9','#fc6e51','#a0d468','#656d78'])
.domain(['Pretest','Learning Path','Supplemental Info','Questions','Test Me','Remedial Page','Search Query','Recommended Reading','Search Results','Practice Questions']);
var chart = d3.timeline()
.colors( colorScale )
.colorProperty('event_type')
.rotateTicks(45)
.stack(); //necessary to unstack all of the labels
var svg = d3.select("#timeline1").append("svg").attr("width", width)
.datum(data).call(chart);
}
timelineRect();
});
}
</script>
</head>
<body>
<div>
<div id="timeline1"></div>
</div>
</body>
这些例子都没有为此定义域名,而且所有的示例数据都是以数组形式给出的,而不是从CSV文件中读取。我该如何定义这些数据,使得具有相同学生标签的每个条目都出现在同一时间轴行上呢?