我正在使用D3创建一个多线图。我已经编写了代码但是没有显示两行,只有一行来了,我无法弄清楚这个问题的原因。
var margin = {
top: 20,
right: 30,
bottom: 30,
left: 40
},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var z = d3.scale.category20c();
var svg = 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 + ")");
var parseDate = d3.time.format("%Y-%m-%dT%H:%M:%S.%LZ");
var data = [{
data: [
["2016-01-20T05:31:17.000Z", 95.9, {}],
["2016-01-20T05:31:47.000Z", 95.9, {}],
["2016-01-20T05:32:17.000Z", 95.4, {}],
["2016-01-20T05:32:47.000Z", 96.1, {}],
["2016-01-20T05:33:17.000Z", 95.7, {}],
["2016-01-20T05:33:47.000Z", 95.9, {}],
["2016-01-20T05:34:17.000Z", 95.5, {}],
["2016-01-20T05:34:47.000Z", 95.9, {}],
["2016-01-20T05:35:17.000Z", 95.8, {}],
["2016-01-20T05:35:47.000Z", 95.9, {}],
["2016-01-20T05:36:17.000Z", 95.7, {}],
["2016-01-20T05:36:47.000Z", 95.7, {}],
["2016-01-20T05:37:17.000Z", 95.9, {}],
["2016-01-20T05:37:47.000Z", 95.5, {}],
["2016-01-20T05:38:17.000Z", 95.4, {}],
["2016-01-20T05:38:47.000Z", 95.8, {}],
["2016-01-20T05:39:17.000Z", 96.0, {}],
["2016-01-20T05:39:47.000Z", 96.1, {}],
["2016-01-20T05:40:17.000Z", 95.8, {}],
["2016-01-20T05:40:47.000Z", 96.0, {}],
["2016-01-20T05:41:17.000Z", 95.9, {}],
["2016-01-20T05:41:47.000Z", 94.9, {}],
["2016-01-20T05:42:17.000Z", 95.8, {}],
["2016-01-20T05:42:47.000Z", 95.9, {}],
["2016-01-20T05:43:17.000Z", 95.8, {}],
["2016-01-20T05:43:47.000Z", 96.0, {}],
["2016-01-20T05:44:17.000Z", 95.7, {}],
["2016-01-20T05:44:47.000Z", 96.0, {}],
["2016-01-20T05:45:17.000Z", 95.9, {}],
["2016-01-20T05:45:47.000Z", 96.0, {}],
["2016-01-20T05:46:17.000Z", 95.8, {}],
["2016-01-20T05:46:47.000Z", 96.0, {}],
["2016-01-20T05:47:17.000Z", 95.7, {}],
["2016-01-20T05:47:47.000Z", 96.2, {}],
["2016-01-20T05:48:17.000Z", 95.8, {}],
["2016-01-20T05:48:47.000Z", 95.9, {}],
["2016-01-20T05:49:17.000Z", 95.7, {}],
["2016-01-20T05:49:47.000Z", 95.9, {}],
["2016-01-20T05:50:18.000Z", 95.7, {}],
["2016-01-20T05:50:48.000Z", 95.8, {}],
["2016-01-20T05:51:18.000Z", 95.7, {}],
["2016-01-20T05:51:48.000Z", 95.9, {}],
["2016-01-20T05:52:18.000Z", 95.5, {}],
["2016-01-20T05:52:48.000Z", 95.9, {}],
["2016-01-20T05:53:18.000Z", 95.8, {}],
["2016-01-20T05:53:48.000Z", 95.9, {}],
["2016-01-20T05:54:18.000Z", 95.7, {}],
["2016-01-20T05:54:48.000Z", 95.9, {}],
["2016-01-20T05:55:18.000Z", 95.8, {}],
["2016-01-20T05:55:48.000Z", 95.8, {}],
["2016-01-20T05:56:18.000Z", 95.6, {}],
["2016-01-20T05:56:48.000Z", 95.7, {}],
["2016-01-20T05:57:18.000Z", 95.7, {}],
["2016-01-20T05:57:48.000Z", 95.8, {}],
["2016-01-20T05:58:18.000Z", 95.7, {}],
["2016-01-20T05:58:48.000Z", 95.7, {}],
["2016-01-20T05:59:18.000Z", 95.6, {}],
["2016-01-20T05:59:48.000Z", 95.8, {}],
["2016-01-20T06:00:18.000Z", 95.7, {}],
["2016-01-20T06:00:48.000Z", 95.7, {}],
["2016-01-20T06:01:18.000Z", 95.6, {}],
["2016-01-20T06:01:48.000Z", 95.7, {}],
["2016-01-20T06:02:18.000Z", 95.8, {}],
["2016-01-20T06:02:48.000Z", 95.8, {}],
["2016-01-20T06:03:18.000Z", 95.8, {}],
["2016-01-20T06:03:48.000Z", 95.8, {}],
["2016-01-20T06:04:18.000Z", 95.8, {}],
["2016-01-20T06:04:48.000Z", 95.8, {}],
["2016-01-20T06:05:18.000Z", 95.7, {}],
["2016-01-20T06:05:48.000Z", 95.7, {}]
],
label: "a"
}, {
data: [
["2016-01-20T05:31:17.000Z", 95.9, {}],
["2016-01-20T05:31:47.000Z", 95.9, {}],
["2016-01-20T05:32:17.000Z", 95.4, {}],
["2016-01-20T05:32:47.000Z", 96.1, {}],
["2016-01-20T05:33:17.000Z", 95.7, {}],
["2016-01-20T05:33:47.000Z", 95.9, {}],
["2016-01-20T05:34:17.000Z", 95.5, {}],
["2016-01-20T05:34:47.000Z", 95.9, {}],
["2016-01-20T05:35:17.000Z", 95.8, {}],
["2016-01-20T05:35:47.000Z", 95.9, {}],
["2016-01-20T05:36:17.000Z", 95.7, {}],
["2016-01-20T05:36:47.000Z", 95.7, {}],
["2016-01-20T05:37:17.000Z", 95.9, {}],
["2016-01-20T05:37:47.000Z", 95.5, {}],
["2016-01-20T05:38:17.000Z", 95.4, {}],
["2016-01-20T05:38:47.000Z", 95.8, {}],
["2016-01-20T05:39:17.000Z", 96.0, {}],
["2016-01-20T05:39:47.000Z", 96.1, {}],
["2016-01-20T05:40:17.000Z", 95.8, {}],
["2016-01-20T05:40:47.000Z", 96.0, {}],
["2016-01-20T05:41:17.000Z", 95.9, {}],
["2016-01-20T05:41:47.000Z", 94.9, {}],
["2016-01-20T05:42:17.000Z", 95.8, {}],
["2016-01-20T05:42:47.000Z", 95.9, {}],
["2016-01-20T05:43:17.000Z", 95.8, {}],
["2016-01-20T05:43:47.000Z", 96.0, {}],
["2016-01-20T05:44:17.000Z", 95.7, {}],
["2016-01-20T05:44:47.000Z", 96.0, {}],
["2016-01-20T05:45:17.000Z", 95.9, {}],
["2016-01-20T05:45:47.000Z", 96.0, {}],
["2016-01-20T05:46:17.000Z", 95.8, {}],
["2016-01-20T05:46:47.000Z", 96.0, {}],
["2016-01-20T05:47:17.000Z", 95.7, {}],
["2016-01-20T05:47:47.000Z", 96.2, {}],
["2016-01-20T05:48:17.000Z", 95.8, {}],
["2016-01-20T05:48:47.000Z", 95.9, {}],
["2016-01-20T05:49:17.000Z", 95.7, {}],
["2016-01-20T05:49:47.000Z", 95.9, {}],
["2016-01-20T05:50:18.000Z", 95.7, {}],
["2016-01-20T05:50:48.000Z", 95.8, {}],
["2016-01-20T05:51:18.000Z", 95.7, {}],
["2016-01-20T05:51:48.000Z", 95.9, {}],
["2016-01-20T05:52:18.000Z", 95.5, {}],
["2016-01-20T05:52:48.000Z", 95.9, {}],
["2016-01-20T05:53:18.000Z", 95.8, {}],
["2016-01-20T05:53:48.000Z", 95.9, {}],
["2016-01-20T05:54:18.000Z", 95.7, {}],
["2016-01-20T05:54:48.000Z", 95.9, {}],
["2016-01-20T05:55:18.000Z", 95.8, {}],
["2016-01-20T05:55:48.000Z", 95.8, {}],
["2016-01-20T05:56:18.000Z", 95.6, {}],
["2016-01-20T05:56:48.000Z", 95.7, {}],
["2016-01-20T05:57:18.000Z", 95.7, {}],
["2016-01-20T05:57:48.000Z", 95.8, {}],
["2016-01-20T05:58:18.000Z", 95.7, {}],
["2016-01-20T05:58:48.000Z", 95.7, {}],
["2016-01-20T05:59:18.000Z", 95.6, {}],
["2016-01-20T05:59:48.000Z", 95.8, {}],
["2016-01-20T06:00:18.000Z", 95.7, {}],
["2016-01-20T06:00:48.000Z", 95.7, {}],
["2016-01-20T06:01:18.000Z", 95.6, {}],
["2016-01-20T06:01:48.000Z", 95.7, {}],
["2016-01-20T06:02:18.000Z", 95.8, {}],
["2016-01-20T06:02:48.000Z", 95.8, {}],
["2016-01-20T06:03:18.000Z", 95.8, {}],
["2016-01-20T06:03:48.000Z", 95.8, {}],
["2016-01-20T06:04:18.000Z", 95.8, {}],
["2016-01-20T06:04:48.000Z", 95.8, {}],
["2016-01-20T06:05:18.000Z", 95.7, {}],
["2016-01-20T06:05:48.000Z", 95.7, {}]
],
label: "b"
}]
var x = d3.time.scale()
.range([0, width]);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var line = d3.svg.line()
.interpolate("monotone")
.x(function(d) {
return x(parseDate.parse(d[0]));
})
.y(function(d) {
return y(d[1]);
});
var ary = [];
data.forEach(function(d) {
ary.push(d.data);
});
x.domain(d3.extent(d3.merge(ary), function(d) {
return parseDate.parse(d[0]);
}));
y.domain([
d3.min(data, function(c) {
return d3.min(c.data, function(v) {
return v[1];
});
}),
d3.max(data, function(c) {
return d3.max(c.data, function(v) {
return v[1];
});
})
]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
var series = svg.selectAll(".series")
.data(data)
.enter().append("g")
.attr("class", "series");
series.append("path")
.attr("class", "line")
.attr("d", function(d) {
return line(d.data);
})
.style("stroke", function(d, i) {
return z(i);
});

text.inner-circle {
font-weight: 400;
font-size: 12px;
text-transform: uppercase;
}
text.inner-text {
font-weight: 400;
font-size: 36px;
font-family: 'Metric Regular', 'Metric';
text-align: center;
font-style: normal;
text-transform: uppercase;
}
path {
stroke: steelblue;
stroke-width: 2;
fill: none;
}
.axis path,
.axis line {
fill: none;
stroke: grey;
stroke-width: 2;
shape-rendering: crispEdges;
}
.grid .tick {
stroke: lightgrey;
stroke-opacity: 0.7;
shape-rendering: crispEdges;
}
.grid path {
stroke-width: 0;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
&#13;
请帮我弄清楚我做错了什么。
答案 0 :(得分:4)
你只是错过了'回归'
x.domain(d3.extent(d3.merge(ary), function(d) {
parseDate.parse(d[0]);
}));
应该是
x.domain(d3.extent(d3.merge(ary), function(d) {
return parseDate.parse(d[0]);
}));
答案 1 :(得分:2)
答案 2 :(得分:1)
如果更改数据中的值,您会看到有两行。
还可以尝试为您的线条添加颜色,以便更好地区分它们:
var color = d3.scale.category10();
series.append("path")
.attr("class", "line")
.attr("d", function(d) {
return line(d.data);
})
.style("stroke", function(d, i) {
return color(i);
});