This example shows one way to visualize the attendence record of a meetup. The meetup members are split into different groups depending on when they joined the group. The bad guys (no shows) are color coded with red.
The collected data is here and has been processed to the required data format.
Link to sequence explorer on github.
<!DOCTYPE html>
<meta charset="utf-8"> <!-- also save this file as unicode-8 ! -->
<head>
<link rel="stylesheet" type="text/css" href="//www.ankerst.de/lib/sankeySeqExplorer_10.css">
<!--script src="../../../lib/d3_v4_2_1/d3.js"></script-->
<script src="//d3js.org/d3.v4.js"></script>
<script src="//www.ankerst.de/lib/sankeySeqExplorer_10.min.js"></script>
<script src="//www.ankerst.de/lib/sankeySeq_10.min.js"></script>
<style>
rect.nyresponded_but_did_not_show_up {
fill: red;
}
</style>
</head>
<body>
<script>
// no parameter when data is embedded in <pre id="data"> tag, otherwise sequenceExplorerChart(file);
// var myChart = sequenceExplorerChart();
var myChart = sequenceExplorerChart("meetup_sankey3.csv")
.showNodeLabels(false)
.sequenceName("meetup")
.categoryName("action")
.categories(["joined meetup group","responded but did not show up","did not respond","responded No","responded and showed up"])
.sequence(["new member","meetup1","meetup2","meetup3"])
.valueName("Number of members");
d3.select("body")
.append("div")
.attr("class", "chart")
.call(myChart);
</script>
</body>
</html> value,sourceX,sourceY,targetX,targetY,member group
5,meetup2,responded and showed up,meetup3,responded but did not show up,members since meetup 1
3,meetup2,responded but did not show up,meetup3,responded but did not show up,members since meetup 1
3,meetup2,responded but did not show up,meetup3,responded and showed up,members since meetup 2
20,meetup1,responded and showed up,meetup2,responded and showed up,members since meetup 1
157,meetup2,did not respond,meetup3,did not respond,members since meetup 2
11,meetup1,responded No,meetup2,responded No,members since meetup 1
19,meetup2,responded but did not show up,meetup3,did not respond,members since meetup 1
44,new member,joined meetup group,meetup3,responded and showed up,members since meetup 3
5,meetup2,responded No,meetup3,responded and showed up,members since meetup 1
1,meetup2,responded but did not show up,meetup3,responded and showed up,members since meetup 1
58,new member,joined meetup group,meetup1,responded and showed up,members since meetup 1
11,meetup2,responded and showed up,meetup3,did not respond,members since meetup 1
20,meetup1,responded and showed up,meetup2,did not respond,members since meetup 1
27,new member,joined meetup group,meetup3,responded but did not show up,members since meetup 3
29,new member,joined meetup group,meetup2,responded and showed up,members since meetup 2
1,meetup2,did not respond,meetup3,responded and showed up,members since meetup 2
7,meetup1,did not respond,meetup2,responded No,members since meetup 1
10,meetup1,did not respond,meetup2,responded but did not show up,members since meetup 1
193,meetup1,did not respond,meetup2,did not respond,members since meetup 1
3,meetup2,responded and showed up,meetup3,responded No,members since meetup 2
2,meetup2,responded No,meetup3,responded No,members since meetup 2
17,meetup2,responded and showed up,meetup3,did not respond,members since meetup 2
51,new member,joined meetup group,meetup1,responded No,members since meetup 1
12,meetup2,responded and showed up,meetup3,responded and showed up,members since meetup 1
13,meetup2,responded No,meetup3,did not respond,members since meetup 2
2,meetup2,responded but did not show up,meetup3,responded No,members since meetup 1
4,meetup2,responded No,meetup3,responded but did not show up,members since meetup 1
217,new member,joined meetup group,meetup1,did not respond,members since meetup 1
5,meetup2,responded but did not show up,meetup3,responded but did not show up,members since meetup 2
2,meetup2,responded and showed up,meetup3,responded but did not show up,members since meetup 2
7,meetup2,responded and showed up,meetup3,responded and showed up,members since meetup 2
68,new member,joined meetup group,meetup1,responded but did not show up,members since meetup 1
7,meetup1,did not respond,meetup2,responded and showed up,members since meetup 1
2,meetup2,responded No,meetup3,responded and showed up,members since meetup 2
214,new member,joined meetup group,meetup3,did not respond,members since meetup 3
8,meetup1,responded but did not show up,meetup2,responded No,members since meetup 1
3,meetup2,responded No,meetup3,responded No,members since meetup 1
11,meetup1,responded and showed up,meetup2,responded No,members since meetup 1
169,new member,joined meetup group,meetup2,did not respond,members since meetup 2
19,new member,joined meetup group,meetup2,responded No,members since meetup 2
9,meetup2,did not respond,meetup3,responded and showed up,members since meetup 1
270,meetup2,did not respond,meetup3,did not respond,members since meetup 1
16,new member,joined meetup group,meetup3,responded No,members since meetup 3
4,meetup2,did not respond,meetup3,responded No,members since meetup 2
7,meetup2,did not respond,meetup3,responded but did not show up,members since meetup 2
2,meetup2,responded No,meetup3,responded but did not show up,members since meetup 2
5,meetup2,did not respond,meetup3,responded No,members since meetup 1
1,meetup2,responded but did not show up,meetup3,responded No,members since meetup 2
25,meetup2,responded No,meetup3,did not respond,members since meetup 1
28,meetup2,responded but did not show up,meetup3,did not respond,members since meetup 2
5,meetup1,responded No,meetup2,responded but did not show up,members since meetup 1
48,meetup1,responded but did not show up,meetup2,did not respond,members since meetup 1
30,meetup1,responded No,meetup2,did not respond,members since meetup 1
37,new member,joined meetup group,meetup2,responded but did not show up,members since meetup 2
3,meetup1,responded but did not show up,meetup2,responded but did not show up,members since meetup 1
9,meetup1,responded but did not show up,meetup2,responded and showed up,members since meetup 1
5,meetup1,responded No,meetup2,responded and showed up,members since meetup 1
7,meetup2,did not respond,meetup3,responded but did not show up,members since meetup 1
13,meetup2,responded and showed up,meetup3,responded No,members since meetup 1
7,meetup1,responded and showed up,meetup2,responded but did not show up,members since meetup 1