我有这个situation ，我可以将更多元素分组到 d3 中的剪辑路径下吗？我想要更多的方 block 使线条变绿。我尝试了各种方法，但没有一个起作用。
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
.dot {
fill: white;
stroke: steelblue;
stroke-width: 1.5px;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
//def variabili
var width = 960,
height = 500;
//data
var data = [
[new Date(2001, 0, 1), 1],
[new Date(2002, 0, 1), 2],
[new Date(2003, 0, 1), 2],
[new Date(2004, 0, 1), 3],
[new Date(2005, 0, 1), 4],
[new Date(2006, 0, 1), 5]
];
//margin
var margin = {top: 20, right: 30, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
//assi
var x = d3.time.scale()
.domain([new Date(2001, 0, 1), new Date(2006, 0, 1)])
.range([0, width]);
var y = d3.scale.linear()
.domain([0, 6])
.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(d[0]); })
.y(function(d) { return y(d[1]); });
//Append svg canvas
var svg = d3.select("body").append("svg")
.datum(data)
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var defs = svg.append("defs");
defs.append("clipPath")
.attr("id", "area")
.append("rect")
.attr("x", 250)
.attr("y", 220)
.attr("width", 150)
.attr("height", 100);
//plot axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
//plot rect
svg.append("rect")
.attr("x", 250)
.attr("y", 220)
.attr("width", 150)
.attr("height", 100)
.style("fill", "yellow");
//plot line
svg.append("path")
.attr("class", "line")
.attr("width", width)
.attr("height", height)
.style("stroke", "red")
.attr("d", line);
//plot line overlay
svg.append("path")
.attr("class", "line")
.attr("clip-path", "url(#area)")
.style("stroke", "green")
.style("stroke-width", "3")
.attr("d", line);
</script>最佳答案
听起来你想让你的剪辑路径数据驱动:
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
.dot {
fill: white;
stroke: steelblue;
stroke-width: 1.5px;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
//def variabili
var width = 960,
height = 500;
//data
var data = [
[new Date(2001, 0, 1), 1],
[new Date(2002, 0, 1), 2],
[new Date(2003, 0, 1), 2],
[new Date(2004, 0, 1), 3],
[new Date(2005, 0, 1), 4],
[new Date(2006, 0, 1), 5]
];
//margin
var margin = {
top: 20,
right: 30,
bottom: 30,
left: 40
},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
//assi
var x = d3.time.scale()
.domain([new Date(2001, 0, 1), new Date(2006, 0, 1)])
.range([0, width]);
var y = d3.scale.linear()
.domain([0, 6])
.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(d[0]);
})
.y(function(d) {
return y(d[1]);
});
//Append svg canvas
var svg = d3.select("body").append("svg")
.datum(data)
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var clips = [
{
x: 250,
y: 250,
width: 150,
height: 150
},{
x: 100,
y: 300,
width: 50,
height: 50
},{
x: 700,
y: 100,
width: 50,
height: 50
}
];
var defs = svg.append("defs");
defs.selectAll("clipPath")
.data(clips)
.enter()
.append("clipPath")
.attr("id", function(d,i){
return "area-" + i;
})
.append("rect")
.attr("x", function(d){
return d.x;
})
.attr("y", function(d){
return d.y;
})
.attr("width", function(d){
return d.width;
})
.attr("height", function(d){
return d.height;
});
//plot axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
//plot line
svg.append("path")
.attr("class", "line")
.style("stroke", "red")
.attr("d", line);
//plot line overlay
svg.selectAll(".clipped")
.data(d3.range(clips.length))
.enter()
.append("path")
.attr("class", "clipped")
.attr("clip-path", function(d){
return "url(#area-" + d + ")";
})
.style("stroke", "green")
.style("stroke-width", "3")
.style("fill", "none")
.attr("d", line(data));
</script>关于javascript - 由一组正方形组成的剪辑路径，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38662838/