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javascript - 无法生成网格线

转载 作者:行者123 更新时间:2023-11-28 08:26:03 25 4
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我一直在尝试在我的图表中获取网格线,我一直在学习 d3noob 的 d3 提示和技巧。如果我的代码错误请帮助我

风格

body {
font: 12px Arial;
}
path {
stroke: steelblue;
stroke-width: 2;
fill: none;
}
.axis path, .axis line {
fill: none;
stroke: grey;
stroke-width: 1;
shape-rendering: crispEdges;
}
.grid.tick {
stroke: lightgrey;
opacity: 0.7;
}
.grid path {
stroke-width: 0;
}

代码

<body>
<!-- load the d3.js library -->
<script src="d3.v3.min.js"></script>
<script>
// Set the dimensions of the canvas / graph
Var margin = {
top: 30,
right: 20,
bottom: 30,
left: 50
},
width = 400 - margin.left - margin.right,
height = 200 - margin.top - margin.bottom;

// Parse the date / time
var parseDate = d3.time.format("%d-%b-%y").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(5);

var yAxis = d3.svg.axis().scale(y)
.orient("left").ticks(5);

// Define the line
var valueline = d3.svg.line()
.interpolate("bundle")
.x(function(d) {
return x(d.date);
})
.y(function(d) {
return y(d.close);
});

// Adds the svg canvas
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 + ")");

function make_x_axis() {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5)
}

function make_y_axis() {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5)
}


// Get the data
d3.csv("data.csv", function(error, data) {
data.forEach(function(d) {
d.date = parseDate(d.date);
d.close = +d.close;
});

// Scale the range of the data
x.domain(d3.extent(data, function(d) {
return d.date;
}));
y.domain([0, d3.max(data, function(d) {
return d.close;
})]);

// Add the valueline path.
svg.append("path")
.attr("class", "line")
.attr("d", valueline(data));

// Add the X Axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);


svg.append("text") // text label for the x axis
.attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom) + ")")
.style("text-anchor", "middle")
.text("Date");


// Add the Y Axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis);

svg.append("text")
.attr("x", (width / 2))
.attr("y", 0 - (margin.top / 2))
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("text-decoration", "underline")
.text("Value vs Date Graph");

svg.append("g")
.attr("class", "grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""))

svg.append("g")
.attr("class", "grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""))

});
</script>
</body>

数据.csv

date,close
1-May-12,58.13
30-Apr-12,53.98
27-Apr-12,67.00
26-Apr-12,89.70
25-Apr-12,99.00
24-Apr-12,130.28
23-Apr-12,166.70
20-Apr-12,234.98
19-Apr-12,345.44
18-Apr-12,443.34
17-Apr-12,543.70
16-Apr-12,580.13
13-Apr-12,605.23
12-Apr-12,622.77
11-Apr-12,626.20
10-Apr-12,628.44
9-Apr-12,636.23
5-Apr-12,633.68
4-Apr-12,624.31
3-Apr-12,629.32
2-Apr-12,618.63
30-Mar-12,599.55
29-Mar-12,609.86
28-Mar-12,617.62
27-Mar-12,614.48
26-Mar-12,606.98

最佳答案

问题可能是由第一行代码引起的,其中 var 显示为 Var。看看是否有帮助

Var margin = {
top: 30,
right: 20,
bottom: 30,
left: 50
},

关于javascript - 无法生成网格线,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22397744/

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