在D3.js中，如何使条具有不同的模式？
我有一个由.CSV创建的条形图，并在D3.js中创建了三种模式。如何应用这三种模式来填充每个条？
我使用的csv我使用的csv：yeal.csv
year,value
2001,10
2002,30
2003,20
这是我写的代码，包括条形图和三个模式。现在，条上充满了蓝色，三个模式在图表旁边。
<!doctype html>
<html>
<head>
<style>
.bar {
fill: steelblue;
}
</style>
<script src="https://d3js.org/d3.v4.min.js"></script>
</head>
<body>
<svg width="600" height="500"></svg>
<svg>
<defs>
<pattern id="pattern1"
x="10" y="10" width="20" height="20"
patternUnits="userSpaceOnUse" >
<circle cx="10" cy="10" r="10" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<defs>
<pattern id="pattern2"
x="10" y="10" width="20" height="20"
patternUnits="userSpaceOnUse" >
<circle cx="10" cy="10" r="5" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<defs>
<pattern id="pattern3"
x="10" y="10" width="20" height="20"
patternUnits="userSpaceOnUse" >
<circle cx="10" cy="10" r="3" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<rect x="0" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#pattern1);" />
<rect x="100" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#pattern2);" />
<rect x="200" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#pattern3);" />
</svg>
<script>
var svg = d3.select("svg"),
margin = 200,
width = svg.attr("width") - margin,
height = svg.attr("height") - margin
var xScale = d3.scaleBand().range([0, width]).padding(0.4),
yScale = d3.scaleLinear().range([height, 0]);
var g = svg.append("g")
.attr("transform", "translate(" + 100 + "," + 100 + ")");
d3.csv("Year.csv", function(error, data) {
if (error) {
throw error;
}
xScale.domain(data.map(function(d) { return d.year; }));
yScale.domain([0, d3.max(data, function(d) { return d.value; })]);
g.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(xScale));
g.append("g")
.call(d3.axisLeft(yScale).tickFormat(function(d){
return d;
}).ticks(10));
g.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return xScale(d.year); })
.attr("y", function(d) { return yScale(d.value); })
.attr("width", xScale.bandwidth())
.attr("height", function(d) { return height - yScale(d.value); })
.attr("fill", "url(#pattern-checkers)");
});
</script>
</body>
</html>
I have a bar chart created from .csv and have created three patterns in d3.js. How can I apply these three patterns to fill each bar?
The Csv I used:Year.csv
year,value
2001,10
2002,30
2003,20
Here is the code I wrote, including the bar chart and three patterns. Now the bars are filled with blue, and the three patterns are beside the chart.
<!doctype html>
<html>
<head>
<style>
.bar {
fill: steelblue;
}
</style>
<script src="https://d3js.org/d3.v4.min.js"></script>
</head>
<body>
<svg width="600" height="500"></svg>
<svg>
<defs>
<pattern id="pattern1"
x="10" y="10" width="20" height="20"
patternUnits="userSpaceOnUse" >
<circle cx="10" cy="10" r="10" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<defs>
<pattern id="pattern2"
x="10" y="10" width="20" height="20"
patternUnits="userSpaceOnUse" >
<circle cx="10" cy="10" r="5" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<defs>
<pattern id="pattern3"
x="10" y="10" width="20" height="20"
patternUnits="userSpaceOnUse" >
<circle cx="10" cy="10" r="3" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<rect x="0" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#pattern1);" />
<rect x="100" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#pattern2);" />
<rect x="200" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#pattern3);" />
</svg>
<script>
var svg = d3.select("svg"),
margin = 200,
width = svg.attr("width") - margin,
height = svg.attr("height") - margin
var xScale = d3.scaleBand().range([0, width]).padding(0.4),
yScale = d3.scaleLinear().range([height, 0]);
var g = svg.append("g")
.attr("transform", "translate(" + 100 + "," + 100 + ")");
d3.csv("Year.csv", function(error, data) {
if (error) {
throw error;
}
xScale.domain(data.map(function(d) { return d.year; }));
yScale.domain([0, d3.max(data, function(d) { return d.value; })]);
g.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(xScale));
g.append("g")
.call(d3.axisLeft(yScale).tickFormat(function(d){
return d;
}).ticks(10));
g.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return xScale(d.year); })
.attr("y", function(d) { return yScale(d.value); })
.attr("width", xScale.bandwidth())
.attr("height", function(d) { return height - yScale(d.value); })
.attr("fill", "url(#pattern-checkers)");
});
</script>
</body>
</html>
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评论（1）
尝试一下。使用栏的索引来指定哪种模式：
一个bar的更新。
i只是条的左至右索引，因此请使用所选索引上的模式。第二个酒吧：Try this. Use the index of the bar to designate which pattern:
UPDATE for one bar. The
iis just the left to right index of the bar, so use the pattern on your chosen index. For the second bar: