ここでは明らかに単純なものが欠けており、専門家の意見を求めています。ボタンをクリックするとデータセットが更新される d3 を使用して、x 軸のタイムラインを持つ単純な棒グラフを作成しようとしています。各データセットの長さは、ユーザーの入力に応じて異なります (最終的に最も顕著なのは、選択した時間範囲です)。私の問題に対処するために、変数 'live' と 'test' に保存されている 2 つのデータセットだけを抽出しました。このデータセットは、以下のコードに含まれており、jsFiddle 内で複製されています: http://jsfiddle.net/jimaroonie/6WBEU/
私の問題は、バーを新しいデータセットの値で更新できないことです。データセットの長さが各バーの幅を決定するため、データは変化しています。これは、更新ボタンをクリックすると明確に機能します (この側面を駆動するために序数スケールを使用しているのに対し、x 軸は時間スケール形式を使用していることに注意してください (比較)以下の 'xord' および 'x' 変数))。
それで、どこが間違っているのですか？選択階層、またはデータがどのように追加されているか（もしあれば？）で何かが欠けているのではないかと思います。うまくいけば、誰かが私を正しい方向に向けることができます。
HTML には単純なボタンが含まれています。
<body>
<div id="click">
<button>Update</button>
</div>
</body>
スタイリングと選択に使用される .CSS:
body {
font: 12px Arial;
}
h1, h2 {
font-weight: bold;
}
path {
stroke-width: 2;
fill: none;
}
.servers-class {
stroke: steelblue;
shape-rendering: crispEdges;
}
.players-class {
stroke: red;
}
.bar-class {
fill: lightblue;
}
.axis path, .axis line {
fill: none;
stroke: black;
stroke-width: 1;
shape-rendering: crispEdges;
}
そして最後に、JavaScript:
var live = [{"Servers":"10301","Players":"7743","Retrieved":"2013-08-01 03:00:05"},{"Servers":"10301","Players":"8987","Retrieved":"2013-08-01 02:00:05"},{"Servers":"10299","Players":"9973","Retrieved":"2013-08-01 01:00:06"},{"Servers":"10294","Players":"11066","Retrieved":"2013-08-01 00:00:04"},{"Servers":"10291","Players":"12194","Retrieved":"2013-07-31 23:00:05"},{"Servers":"10285","Players":"14094","Retrieved":"2013-07-31 22:00:05"},{"Servers":"10281","Players":"16666","Retrieved":"2013-07-31 21:00:05"},{"Servers":"10274","Players":"19626","Retrieved":"2013-07-31 20:00:11"},{"Servers":"10264","Players":"20595","Retrieved":"2013-07-31 19:00:05"},{"Servers":"10257","Players":"20289","Retrieved":"2013-07-31 18:00:07"},{"Servers":"10246","Players":"19772","Retrieved":"2013-07-31 17:00:04"},{"Servers":"10235","Players":"19025","Retrieved":"2013-07-31 16:00:04"},{"Servers":"10225","Players":"19226","Retrieved":"2013-07-31 15:00:05"},{"Servers":"10217","Players":"18856","Retrieved":"2013-07-31 14:00:04"},{"Servers":"10211","Players":"17571","Retrieved":"2013-07-31 13:00:06"},{"Servers":"10203","Players":"16722","Retrieved":"2013-07-31 12:00:04"},{"Servers":"10195","Players":"16918","Retrieved":"2013-07-31 11:00:04"},{"Servers":"10186","Players":"16160","Retrieved":"2013-07-31 10:00:05"},{"Servers":"10179","Players":"15283","Retrieved":"2013-07-31 09:00:04"},{"Servers":"10218","Players":"13658","Retrieved":"2013-07-31 08:00:07"},{"Servers":"10215","Players":"10549","Retrieved":"2013-07-31 07:00:04"},{"Servers":"10213","Players":"7698","Retrieved":"2013-07-31 06:00:05"},{"Servers":"10210","Players":"6548","Retrieved":"2013-07-31 05:00:05"},{"Servers":"10340","Players":"6603","Retrieved":"2013-07-31 04:00:05"}];
var test = [{"Servers":"10215","Players":"15378","Retrieved":"2013-07-30 09:00:05"},{"Servers":"10207","Players":"12884","Retrieved":"2013-07-30 08:00:04"},{"Servers":"10205","Players":"10113","Retrieved":"2013-07-30 07:00:04"},{"Servers":"10200","Players":"7381","Retrieved":"2013-07-30 06:00:07"},{"Servers":"10195","Players":"6268","Retrieved":"2013-07-30 05:00:04"},{"Servers":"10302","Players":"6477","Retrieved":"2013-07-30 04:00:04"},{"Servers":"10293","Players":"7925","Retrieved":"2013-07-30 03:00:05"},{"Servers":"10288","Players":"9181","Retrieved":"2013-07-30 02:00:05"},{"Servers":"10286","Players":"10238","Retrieved":"2013-07-30 01:00:04"},{"Servers":"10291","Players":"10865","Retrieved":"2013-07-30 00:00:04"},{"Servers":"10290","Players":"11770","Retrieved":"2013-07-29 23:00:05"},{"Servers":"10283","Players":"13600","Retrieved":"2013-07-29 22:00:05"},{"Servers":"10280","Players":"16196","Retrieved":"2013-07-29 21:00:04"},{"Servers":"10274","Players":"18868","Retrieved":"2013-07-29 20:00:05"},{"Servers":"10264","Players":"19884","Retrieved":"2013-07-29 19:00:05"},{"Servers":"10250","Players":"19667","Retrieved":"2013-07-29 18:00:05"},{"Servers":"10240","Players":"18211","Retrieved":"2013-07-29 17:00:05"},{"Servers":"10230","Players":"17748","Retrieved":"2013-07-29 16:00:04"},{"Servers":"10220","Players":"17977","Retrieved":"2013-07-29 15:00:05"},{"Servers":"10211","Players":"17914","Retrieved":"2013-07-29 14:00:06"},{"Servers":"10206","Players":"16742","Retrieved":"2013-07-29 13:00:06"},{"Servers":"10189","Players":"16475","Retrieved":"2013-07-29 12:00:05"},{"Servers":"10175","Players":"16201","Retrieved":"2013-07-29 11:00:05"},{"Servers":"10163","Players":"15738","Retrieved":"2013-07-29 10:00:05"},{"Servers":"10157","Players":"14728","Retrieved":"2013-07-29 09:00:05"},{"Servers":"10201","Players":"12660","Retrieved":"2013-07-29 08:00:06"},{"Servers":"10192","Players":"10393","Retrieved":"2013-07-29 07:00:05"},{"Servers":"5000","Players":"7846","Retrieved":"2013-07-29 06:00:05"},{"Servers":"10184","Players":"6342","Retrieved":"2013-07-29 05:00:05"},{"Servers":"10294","Players":"6716","Retrieved":"2013-07-29 04:00:07"},{"Servers":"10291","Players":"7863","Retrieved":"2013-07-29 03:00:05"},{"Servers":"10289","Players":"8796","Retrieved":"2013-07-29 02:00:06"},{"Servers":"10286","Players":"9748","Retrieved":"2013-07-29 01:00:05"},{"Servers":"10281","Players":"10415","Retrieved":"2013-07-29 00:00:05"},{"Servers":"10275","Players":"11513","Retrieved":"2013-07-28 23:00:04"},{"Servers":"10271","Players":"13356","Retrieved":"2013-07-28 22:00:05"},{"Servers":"10264","Players":"16443","Retrieved":"2013-07-28 21:00:05"},{"Servers":"10255","Players":"19093","Retrieved":"2013-07-28 20:00:05"},{"Servers":"10247","Players":"19162","Retrieved":"2013-07-28 19:00:04"},{"Servers":"10238","Players":"19187","Retrieved":"2013-07-28 18:00:05"},{"Servers":"10232","Players":"17643","Retrieved":"2013-07-28 17:00:04"},{"Servers":"10226","Players":"17413","Retrieved":"2013-07-28 16:00:04"},{"Servers":"10217","Players":"16721","Retrieved":"2013-07-28 15:00:06"},{"Servers":"10204","Players":"15756","Retrieved":"2013-07-28 14:00:05"},{"Servers":"10194","Players":"14853","Retrieved":"2013-07-28 13:00:04"},{"Servers":"10181","Players":"14262","Retrieved":"2013-07-28 12:00:06"},{"Servers":"10177","Players":"13976","Retrieved":"2013-07-28 11:00:04"},{"Servers":"10167","Players":"13895","Retrieved":"2013-07-28 10:00:06"}];
// Set the dimensions of the canvas / graph
var margin = {top: 30, right: 50, bottom: 30, left: 50},
width = 960 - margin.left - margin.right,
height = 400 - margin.top - margin.bottom;
// Parse the date / time
var parseDate = d3.time.format.iso.parse;
// Set the ranges
var x = d3.time.scale()
.range([0, width])
;
var y = d3.scale.linear()
.range([height, 0])
;
// Define the axes
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(12)
//.tickFormat(d3.time.format("%H:%M"))
;
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
// Define the lines
var serversLine = d3.svg.line()
.interpolate("step-before")
.x(function(d) { return x(parseDate(d.Retrieved)); })
.y(function(d) { return y(d.Servers); });
var playersLine = d3.svg.line()
.interpolate("basis")
.x(function(d) { return x(parseDate(d.Retrieved)); })
.y(function(d) { return y(d.Players); });
// Adds the svg canvas
var chart = d3.select("body")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
// Scale the range of the data
x.domain(d3.extent(live, function(d) { return parseDate(d.Retrieved); }));
y.domain([0, d3.max(live, function(d) { return Math.max(d.Servers, d.Players); })]);
var xord = d3.scale.ordinal()
.domain(d3.range(live.length))
.rangeRoundBands([0, width], 0.05);
// Display Bar Chart
chart.selectAll("container")
.data(live)
.enter()
.append("rect")
.attr("class", "bar-class")
.attr("x", function(d) { return x(parseDate(d.Retrieved)); })
.attr("y", function(d) { return y(d.Servers); })
.attr("width", xord.rangeBand() )
.attr("height", function(d) { return height - y(d.Servers); })
;
chart.append("path")
.attr("class", "players-class")
.attr("d", playersLine(live));
// Add the X Axis
chart.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
// Add the Y Axis
chart.append("g")
.attr("class", "y axis")
.call(yAxis);
d3.select("#click")
.on("click", function() {
// Scale the range of the data
x.domain(d3.extent(test, function(d) { return parseDate(d.Retrieved); }));
y.domain([0, d3.max(test, function(d) { return Math.max(d.Servers, d.Players); })]);
var xord = d3.scale.ordinal()
.domain(d3.range(test.length))
.rangeRoundBands([0, width], 0.05);
var chart = d3.select("body");
chart.select(".players-class")
.attr("d", playersLine(test));
chart.select(".x.axis")
.call(xAxis);
chart.select(".y.axis")
.call(yAxis);
var bars = chart.selectAll("rect")
.data(test);
bars.enter()
.append("rect")
.attr("x", function(d) { return x(parseDate(d.Retrieved)); })
.attr("y", function(d) { return y(d.Servers); })
.attr("width", xord.rangeBand() )
.attr("height", function(d) { return height - y(d.Servers); })
;
bars.transition()
.duration(750)
.attr("x", function(d) { return x(parseDate(d.Retrieved)); })
.attr("y", function(d) { return y(d.Servers); })
.attr("width", xord.rangeBand() )
.attr("height", function(d) { return height - y(d.Servers); })
;
bars.exit()
.remove();
});