因此,我想在条形图上方显示每个条形的总价值。不幸的是,我似乎无法使其直接位于酒吧上方。 我已经尝试了几件事,但是该值似乎在栏的上方保持静态。有人可以帮我吗?我非常感谢。我已经省略了一些代码,因为它太长了。
这是现在的样子:
var x = d3.scaleBand()
.rangeRound([0, width])
.paddingInner(0.2);
var y = d3.scaleLinear()
.rangeRound([height, 0]);
var color = d3.scaleOrdinal()
.range(d3.schemeGreys[7]);
var xAxis = d3.axisBottom(x);
var yAxis = d3.axisLeft(y)
.tickFormat(d3.format(".2s"));
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 + ")");
var update = function(data) {
color.domain(d3.keys(data[0]).filter(function(key) { return key !== "Categories"; }));
data.forEach(function(d) {
var y0 = 0;
d.stores = color.domain().map(function(name) { return {name: name, y0: y0, y1: y0 += +d[name]}; });
d.total = d.stores[d.stores.length - 1].y1;
});
data.sort(function(a, b) { return b.total - a.total; });
x.domain(data.map(function(d) { return d.Categories; }));
y.domain([0, d3.max(data, function(d) { return d.total; })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call((xAxis)
.tickSize(0)
.tickPadding(6));
var categories = svg.selectAll(".categories")
.data(data)
.enter().append("g")
.attr("class", "g")
.attr("transform", function(d) { return "translate(" + x(d.Categories) + ",0)"; });
categories.selectAll("rect")
.data(function(d) { return d.stores; })
.enter().append("rect")
.attr("width", x.bandwidth())
.attr("y", function(d) { return y(d.y1); })
.attr("height", function(d) { return y(d.y0) - y(d.y1); })
.style("fill", function(d) { return color(d.name); });
categories.selectAll("text")
.data(function(d) { return d.stores; })
.enter().append("text")
.attr("y", function(d) { return y((d.y0 + d.y1) / 2); })
.attr("x", x.bandwidth()/2)
.attr("text-anchor","middle")
.attr("alighnment-baseline", "middle")
.style("fill",'#fff')
.text(function(d) { return d.y1 - d.y0; });
categories.append("text")
.attr("text-anchor", "middle")
.attr("x", x.bandwidth()/2)
.attr("y", function(d) { return y((d.y0)); })
.style("fill", "black")
.text(function(d) { return d.total; });
var Data = [
{
"Categories": "Lissabon",
"1": "34",
"2": "76",
"3": "87",
"4": "54",
"5": "66",
"6": "72"
},
答案 0 :(得分:1)
您可以使用现有的y
比例尺来计算总计的位置,方法与对矩形的上下边缘以及每个文本的处理方式相同。无需使用d.y0
或d.y1
,而需要使用d.total
:
categories.append("text")
.attr("text-anchor", "middle")
.attr("x", x.bandwidth()/2)
.attr("y", function(d) { return y(d.total); }) // d.total!
.style("fill", "black")
.text(function(d) { return d.total; });
这会将文本定位在顶部矩形的顶部,因此,最好在此矩形上添加一些偏移:
categories.append("text")
.attr("text-anchor", "middle")
.attr("x", x.bandwidth()/2)
.attr("y", function(d) { return y(d.total); })
.attr('dy', '-0.5em') // add 0.5em offset
.style("fill", "black")
.text(function(d) { return d.total; });
这是一个有效的示例:
var Data = [
{
"Categories": "Lissabon",
"1": "34",
"2": "76",
"3": "87",
"4": "54",
"5": "66",
"6": "72"
},
{ Categories: "This",
1: 239, 2: 254, 3: 225, 4: 152, 5: 362, 6: 98
},
{ Categories: "That",
1: 457, 2: 234, 3: 83, 4: 327, 5: 88, 6: 99
},
{ Categories: "The Other",
1: 132, 2: 286, 3: 222, 4: 150, 5: 363, 6: 95
}
]
var height = 600,
width = 600,
margin = { left: 10, right: 10, top: 20, bottom: 20 }
var x = d3.scaleBand()
.rangeRound([0, width])
.paddingInner(0.2);
var y = d3.scaleLinear()
.rangeRound([height, 0]);
var color = d3.scaleOrdinal()
.range(d3.schemeGreys[7]);
var xAxis = d3.axisBottom(x);
var yAxis = d3.axisLeft(y)
.tickFormat(d3.format(".2s"));
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 + ")");
var update = function(data) {
color.domain(d3.keys(data[0]).filter(function(key) { return key !== "Categories"; }));
data.forEach(function(d) {
var y0 = 0;
d.stores = color.domain().map(function(name) { return {name: name, y0: y0, y1: y0 += +d[name]}; });
d.total = d.stores[d.stores.length - 1].y1;
});
data.sort(function(a, b) { return b.total - a.total; });
x.domain(data.map(function(d) { return d.Categories; }));
y.domain([0, d3.max(data, function(d) { return d.total; })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call((xAxis)
.tickSize(0)
.tickPadding(6));
var categories = svg.selectAll(".categories")
.data(data)
.enter().append("g")
.attr("class", "g")
.attr("transform", function(d) { return "translate(" + x(d.Categories) + ",0)"; });
categories.selectAll("rect")
.data(function(d) { return d.stores; })
.enter().append("rect")
.attr("width", x.bandwidth())
.attr("y", function(d) { return y(d.y1); })
.attr("height", function(d) { return y(d.y0) - y(d.y1); })
.style("fill", function(d) { return color(d.name); });
categories.selectAll("text")
.data(function(d) { return d.stores; })
.enter().append("text")
.attr("y", function(d) { return y((d.y0 + d.y1) / 2); })
.attr("x", x.bandwidth()/2)
.attr('dy', '0.35em')
.attr("text-anchor","middle")
.attr("alighnment-baseline", "middle")
.style("fill",'#fff')
.text(function(d) { return d.y1 - d.y0; });
categories.append("text")
.attr("text-anchor", "middle")
.attr("x", x.bandwidth()/2)
.attr("y", function(d) { return y(d.total); })
.attr('dy', '-0.5em')
.style("fill", "black")
.text(function(d) { return d.total; });
}
update(Data)
<script type="text/javascript" src="http://d3js.org/d3.v5.js"></script>