我从这个 Link 中找到了一个简单的响应条形图。所以，我对此做了一些小的修改，并在条形图中添加了图例。图表是响应式的，但不是图例。几天以来我一直在研究这个。我曾尝试将图例附加到 x 轴，但也不起作用。
<!doctype html>
<html lang="en">
<head>
<title>Bootstrap Case</title>
<meta charset="utf-8">
<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
</head>
<style>
.axis path,
.axis line {
fill: none;
stroke: #bdbdbd;
}
.axis text {
font-family: 'Open Sans regular', 'Open Sans';
font-size: 13px;
}
.bar {
fill: #8bc34a;
}
.bar:hover {
fill: #039be4;
}
</style>
<div id ="chartID"></div>
<script>
var data = [{
"letter": "a",
"frequency": "4.84914547592537",
"Color": "#D3D3D3"
},
{
"letter": "b",
"frequency": "4.86872684269123",
"Color": "#D3D3D3"
},
{
"letter": "c",
"frequency": "6.63842861065779",
"Color": "#000000"
},
{
"letter": "d",
"frequency": "6.53280838923937",
"Color": "#000000"
}
]
var data2 = [];
for (var i = 0; i < 2; i++) {
data2.push(data[i]);
}
var color_hash = {
0: ["Control", "#D3D3D3"],
1: ["Case", "#000000"]
}
var margin = {
top: 30,
right: 100,
bottom: 20,
left: 80
};
var width = 960 - margin.left - margin.right;
var height = 500 - margin.top - margin.bottom;
var xScale = d3.scale.ordinal().rangeRoundBands([0, width], .1)
var yScale = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(xScale)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(yScale)
.orient("left");
var svgContainer = d3.select("#chartID").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 + ")");
xScale.domain(data.map(function (d) {
return d.letter;
}));
yScale.domain([0, d3.max(data, function (d) {
return d.frequency;
})]);
var xAxis_g = svgContainer.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + (height) + ")")
.call(xAxis);
var yAxis_g = svgContainer.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("dx", "-10em")
.attr("transform", "rotate(-90)")
.attr("y", 6).attr("dy", "-4.0em")
.style("text-anchor", "end").text("Expression values");
svgContainer.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function (d) {
return xScale(d.letter);
})
.attr("width", xScale.rangeBand())
.attr("y", function (d) {
return yScale(d.frequency);
})
.attr("height", function (d) {
return height - yScale(d.frequency);
})
.style("fill", function (d) {
return d.Color;
});
// Add Legends
var legend = svgContainer.append("g")
// .attr("transform", "translate(0," + (10) + ")")
// .attr("x", width - 100)
// .attr("y", 250)
// .attr("height", 100)
// .attr("width", 100);
legend.selectAll('g').data(data2)
.enter()
.append('g')
.each(function (d, i) {
var g = d3.select(this);
g.append("rect")
// .attr("class", "legend")
.attr("x", width)
.attr("y", i * 25)
.attr("width", 10)
.attr("height", 10)
.style("fill", color_hash[String(i)][1]);
g.append("text")
// .attr("class", "legend")
.attr("x", width - 20 * -1)
.attr("y", i * 25 + 8)
// .attr("height", 30)
// .attr("width", 100)
// .style("text-anchor", "end")
.style("font-size", 16)
.text(color_hash[String(i)][0]);
});
d3.select(window).on('resize', resize);
function resize() {
// console.log('----resize function----');
// update width
width = parseInt(d3.select('#chartID').style('width'), 10);
width = width - margin.left - margin.right;
height = parseInt(d3.select("#chartID").style("height"));
height = height - margin.top - margin.bottom;
// console.log('----resiz width----' + width);
// console.log('----resiz height----' + height);
// resize the chart
if (width < 870) {
//xScale.range([0, width]);
xScale.rangeRoundBands([0, width], .1);
yScale.range([height, 0]);
yAxis.ticks(Math.max(height / 50, 2));
xAxis.ticks(Math.max(width / 50, 2));
d3.select(svgContainer.node().parentNode)
.style('width', (width + margin.left + margin.right) + 'px');
svgContainer.selectAll('.bar')
.attr("x", function (d) {
return xScale(d.letter);
})
.attr("width", xScale.rangeBand());
// svgContainer.selectAll('.legend')
// .attr("x", function (d) {
// return ;
// })
// .attr("width", xScale.rangeBand());
svgContainer.select('.x.axis').call(xAxis.orient('bottom'));
// svgContainer.select('.legend');
}
}
</script>
</html>
需要一些帮助。
谢谢。