在下面的小提示中,您可以注意到第一个栏的标签为no
,即使其值为零。
如何在堆积条形图中删除零值的标签?
CODE:
var data = [
{
"episode": "Ep. 01",
"yes": "100",
"no": "0"
},
{
"episode": "Ep. 02",
"yes": "70",
"no": "30"
},
{
"episode": "Ep. 03",
"yes": "50",
"no": "50"
},
{
"episode": "Ep. 04",
"yes": "90",
"no": "10"
},
{
"episode": "Ep. 05",
"yes": "30",
"no": "70"
},
{
"episode": "Ep. 06",
"yes": "60",
"no": "40"
},
{
"episode": "Ep. 07",
"yes": "70",
"no": "30"
},
{
"episode": "Ep. 08",
"yes": "50",
"no": "50"
},
{
"episode": "Ep. 09",
"yes": "90",
"no": "10"
},
{
"episode": "Ep. 10",
"yes": "30",
"no": "70"
}
];
var margin = {top: 20, right: 100, bottom: 30, left: 40},
width = 600 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.domain(data.map( function(d) { return d.episode; }))
.rangeRoundBands([0, width], .1);
var y = d3.scale.linear()
.rangeRound([height, 0]);
var color = d3.scale.ordinal()
.range(["#B4D92A", "#FF3332"]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickSize(10,10);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(d3.format(".0%"));
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom + 100)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
//d3.csv("data.csv", function(error, data) {
color.domain(d3.keys(data[0]).filter(function(key) { return key !== "episode"; }));
data.forEach(function(d) {
var y0 = 0;
d.ages = color.domain().map(function(name) { return {name: name, y0: y0, y1: y0 += +d[name]}; });
d.ages.forEach(function(d) { d.y0 /= y0; d.y1 /= y0; });
});
//data.sort(function(a, b) { return b.ages[0].y1 - a.ages[0].y1; });
// var unique = data.map(function(d) { return d.episode.substring(0,5)+'...'; });
// x.domain(unique);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll(".tick text")
.call(wrap, x.rangeBand());
svg.selectAll(".ellipse")
.data(data)
.enter()
.append("ellipse")
.attr("cx", function(d) { return x(d.episode) + 14; })
.attr("cy", function(d) { return y(0); })
.attr("rx", 18)
.attr("ry", 5)
.style("fill", "#728220");
var episode = svg.selectAll(".episode")
.data(data)
.enter().append("g")
.attr("class", "episode")
.attr("transform", function(d) { return "translate(" + x(d.episode) + ",0)"; });
var tooltip = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
episode.selectAll("rect")
.data(function(d) { return d.ages; })
.enter().append("rect")
.attr("width", x.rangeBand() - 15)
.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); })
.on("mouseover", function(d) {
var x=Number($(this).attr("height"))/45;
if($(this).css("fill")=="rgb(255, 51, 50)" || $(this).css("fill")=="#ff3332" ){
tooltip.html("YES: " + Number((10-x)*10) + "%<br/>NO: " + Number(x*10) + "%")
}
else
{
tooltip.html("YES: " + Number((x)*10) + "%<br/>NO: " + Number(10-x)*10 + "%")
}
tooltip.transition().duration(200).style("opacity", .9);
tooltip
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY - 28) + "px");
})
.on("mouseout", function(d) {
tooltip.transition().duration(500).style("opacity", 0);
});
/*.attr("rx", 5)
.attr("ry", 5);*/
var label = svg.selectAll(".episode")
.selectAll(".legend")
.data(function(d) { return d.ages; })
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d) { return "translate(" + x.rangeBand() / 2 + "," + y((d.y0 + d.y1) / 2) + ")"; });
label.append("text")
.attr("x", -15)
.attr("dy", "-0.35em")
.attr("transform", "rotate(-90)")
.text(function(d) { return d.name; });
function wrap(text, width) {
text.each(function() {
var text = d3.select(this),
words = text.text().split(/\s+/).reverse(),
word,
line = [],
lineNumber = 0,
lineHeight = 1.1, // ems
y = text.attr("y"),
dy = parseFloat(text.attr("dy")),
tspan = text.text(null).append("tspan").attr("x", 0).attr("y", y).attr("dy", dy + "em");
while (word = words.pop()) {
line.push(word);
tspan.text(line.join(" "));
if (tspan.node().getComputedTextLength() > width) {
line.pop();
tspan.text(line.join(" "));
line = [word];
tspan = text.append("tspan").attr("x", 0).attr("y", y).attr("dy", ++lineNumber * lineHeight + dy + "em").text(word);
}
}
});
}
//});
答案 0 :(得分:4)
有很多方法可以解决这个问题,在创建文本元素时请考虑这一点:
.style("display", function(d) { (test if value is zero) ? "none" : "inline"; }
在你的小提琴中实施:http://jsfiddle.net/V5fJ7/1/
或者,您可以在实际创建文本之前过滤您的选择,因此不会首先创建它们:
d3Selection.filter(function(d) { return (conditions of data you wish to keep); })
.append("text")
.etc..
您可以在此处看到:http://jsfiddle.net/V5fJ7/2/