我正在尝试创建一组text元素，并将其放置在各种rect元素上方，以使其看起来好像在它们内部。问题是我无法完成这项简单的任务。
在text列中需要的rect元素是数组的元素：var dataDnt4 = [42,31,16,4,3,2,1];
我会留下一个正在运行的代码段，以便到目前为止您的进度。
非常感谢您的帮助。谢谢
var icon2 = '<g><path class="st0" d="M23.1,34.9c6.9,0,12.5-5.6,12.5-12.5c0-6.9-5.6-12.5-12.5-12.5c-6.9,0-12.5,5.6-12.5,12.5 C10.6,29.3,16.2,34.9,23.1,34.9L23.1,34.9z"/><path class="st0" d="M39.2,54.6c0.2,0,0.4,0,0.7,0c-3.7-3-6-7.5-6-12.6c0-1.2,0.1-2.4,0.4-3.6c-0.1,0-0.3,0-0.4,0H12.4 C5.5,38.5-0.1,44.1-0.1,51v17.9h23.3C24.1,60.8,30.9,54.6,39.2,54.6L39.2,54.6z"/><path class="st0" d="M76.8,34.9c6.9,0,12.5-5.6,12.5-12.5c0-6.9-5.6-12.5-12.5-12.5c-6.9,0-12.5,5.6-12.5,12.5 C64.2,29.3,69.9,34.9,76.8,34.9L76.8,34.9z"/><path class="st0" d="M87.5,38.5H66c-0.1,0-0.3,0-0.4,0c0.3,1.1,0.4,2.3,0.4,3.6c0,5.1-2.4,9.6-6,12.6c0.2,0,0.4,0,0.7,0 c8.3,0,15.1,6.3,16,14.3H100V51C100,44.1,94.4,38.5,87.5,38.5L87.5,38.5z"/><path class="st0" d="M49.9,54.6c6.9,0,12.5-5.6,12.5-12.5c0-6.9-5.6-12.5-12.5-12.5c-6.9,0-12.5,5.6-12.5,12.5 C37.4,49,43,54.6,49.9,54.6L49.9,54.6z"/><path class="st0" d="M60.7,58.1H39.2c-6.9,0-12.5,5.6-12.5,12.5v17.9h46.5V70.7C73.2,63.7,67.6,58.1,60.7,58.1L60.7,58.1z"/></g>'
var dataDnt4 = [42, 31, 16, 4, 3, 2, 1];
var distanciaRect = [25, 50, 75, 100, 125, 150, 175]
var width = 512,
height = 600
radius = (Math.min(width, height) / 2.5) - 60;
var sym = "%"
var legendTextArr = ["alpha", "beta", "Gamma", "vvv", "www", "xxx", "yyy", "zzz"]
var color_rect = ["#00338D", "#BC204B", "#0091DA", "#eaaa00", "#005eb8", "#f68d2e", "#009444", "#470a68"]
var pie = d3.pie()
.value(function(d) {
return d
})(dataDnt4);
var arc = d3.arc()
.outerRadius(radius - 10)
.innerRadius(radius - (radius / 2.4));
var labelArc = d3.arc()
.outerRadius(radius - 35)
.innerRadius(radius - 35);
var svg = d3.select("#chartdiv")
.append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2.4 + ")");
var title = svg.append("text")
.attr("font-weight", "bold")
.attr("class", "title1")
.html("title 1")
.attr("transform", function() {
return "translate(" + (-184) + "," + (-180) + ")"
})
var title = svg.append("text")
.attr("font-weight", "bold")
.attr("class", "title2")
.html("title 2")
.attr("transform", function() {
return "translate(" + (-184) + "," + (-160) + ")"
})
var legendG = svg.append("g")
.attr("class", "legendG")
.attr("transform", function() {
return "translate(" + (-60) + "," + (155) + ")"
})
var legendG = svg.append("g")
.attr("class", "legendG")
.attr("transform", function() {
return "translate(" + (-60) + "," + (155) + ")"
})
var legendText = legendG.selectAll("text")
.data(distanciaRect)
.enter()
.append("text")
.attr("x", -80)
.attr("y", function(d, i) {
return d + 10
})
.data(legendTextArr)
.html(function(d) {
return d
})
var legends = legendG.selectAll(".rect")
.data(distanciaRect)
.enter()
.append("rect")
.attr("x", -120)
.attr("y", function(d, i) {
return d
})
.attr("width", 25)
.attr("height", 17)
.attr("class", "icon1")
.data(color_rect)
.attr("fill", function(d, i) {
return d
})
var g = svg.selectAll("arc")
.data(pie)
.enter().append("g")
.attr("class", "arc");
function easeInverse(ease) {
return function(e) {
var min = 0,
max = 1;
while (max - min > 1e-3) {
var mid = (max + min) * 0.5;
emid = ease(mid);
if (emid > e) {
max = mid;
} else {
min = mid;
}
}
return max;
}
}
var inverseCubic = easeInverse(d3.easeCubic);
var oneOver2Pi = 1.0 / (2 * Math.PI);
var total_msec = 2000;
g.append("path")
.attr("d", arc)
.attr("transform", function() {
return "translate(" + (-16) + "," + (0) + ")"
})
.style("fill", function(d, i) {
return color_rect[i];
})
.transition()
.ease(d3.easeLinear)
.delay(function(d) {
return total_msec * inverseCubic(d.startAngle * oneOver2Pi);
})
.duration(function(d) {
return total_msec * (inverseCubic(d.endAngle * oneOver2Pi) - inverseCubic(d.startAngle * oneOver2Pi));
})
.attrTween("d", arcTween);
function arcTween(d) {
var i = d3.interpolate(inverseCubic(d.startAngle * oneOver2Pi), inverseCubic(d.endAngle * oneOver2Pi));
return function(t) {
d.endAngle = 2 * Math.PI * d3.easeCubic(i(t));
return arc(d);
}
}
svg.append("g")
.attr("class", "icon2")
.html(icon2);<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://d3js.org/d3.v5.min.js"></script>
<div id="chartdiv"></div>
答案 0 :(得分：1)
有很多方法可以做到这一点，因此这是一种可能的方法。我将图例的三个部分（矩形，键文本和矩形上的文本）组合到一个g元素中，并将dataDnt4绑定到每个项目。矩形颜色和图例文本可以按位置进行检索，即第一个dataDnt4项对应于color_rect[0]和legendTextArr[0]，第二个项对应于color_rect[1]和legendTextArr[1]等
我已经删除了与图例项的位置无关的代码-您可以在脚本中将其恢复。
var width = 512,
height = 600,
radius = (Math.min(width, height) / 2.5) - 60;
var sym = "%"
var legendTextArr = ["alpha", "beta", "Gamma", "vvv", "www", "xxx", "yyy", "zzz"]
var dataDnt4 = [42, 31, 16, 4, 3, 2, 1];
var color_rect = ["#00338D", "#BC204B", "#0091DA", "#eaaa00", "#005eb8", "#f68d2e", "#009444", "#470a68"]
var svg = d3.select("#chartdiv")
.append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2.4 + ")");
var title = svg.append("text")
.attr("font-weight", "bold")
.attr("class", "title1")
.html("scroll down!")
.attr("transform", function() {
return "translate(" + -184 + "," + -180 + ")"
})
var legendG = svg.append("g")
.attr("class", "legendG")
.attr("transform", function() {
// this moves the whole legend box
// you can change this to whatever transformation is appropriate for your chart
return "translate(" + -((width / 2)-40) + "," + 120 + ")"
})
// group each legend item in a `g` element
var legendText = legendG.selectAll("g")
.data(dataDnt4)
.enter()
.append('g')
.attr('transform', function(d, i) {
// instead of having a hard-coded list of multiples of 25, you can multiply
// the array index, `i`, by 25 to get the correct position
return 'translate(0,' + (i*25) + ')';
});
legendText.append("rect")
.attr("width", 25)
.attr("height", 17)
.attr("class", "icon1")
.attr("fill", function(d, i) {
return color_rect[i];
})
// the text "in" the rectangle
// use 'text-anchor: middle' and an x offset of 12.5 (rectangle width / 2)
// to centre the labels
// change the `y` attribute to alter the vertical positioning
legendText.append("text")
.attr("x", 12.5)
.attr("y", 13)
.attr('text-anchor', 'middle')
.attr('fill', 'white')
// d is the items in dataDnt4
.text(function(d) {
return d;
})
// legend text items
legendText.append("text")
.attr("x", 40)
.attr("y", 13)
// take legendTextArr item in position i
.text(function(d,i) {
return legendTextArr[i];
})<script src="https://d3js.org/d3.v5.min.js"></script>
<div id="chartdiv"></div>
您的代码中有一些错误（例如，您两次声明了变量legendG和title），这可能对您通过代码套子运行代码很有帮助，这样您就可以看到您可能不会注意到的问题。