我留下了使用前一位开发人员的 nv.d3.js 构建的数据可视化图表，我目前正在尝试编辑饼图以将饼图定位在顶部，将标签定位在底部。这是一个视觉示例的 fiddle 。
https://jsfiddle.net/kxrd2h7t/2/
我相信之前的开发者使用的nv.d3.js版本不同，我找到了饼图功能但不知道从哪里开始。
a.models.pieChart = function () {
"use strict";
function b(e) {
return q.reset(), q.models(c), e.each(function (e) {
var k = d3.select(this);
a.utils.initSVG(k);
var n = a.utils.availableWidth(g, k, f),
o = a.utils.availableHeight(h, k, f);
if (b.update = function () {
k.transition().call(b)
}, b.container = this, l.setter(s(e), b.update).getter(r(e)).update(), l.disabled = e.map(function (a) {
return !!a.disabled
}), !m) {
var q;
m = {};
for (q in l) m[q] = l[q] instanceof Array ? l[q].slice(0) : l[q]
}
if (!e || !e.length) return a.utils.noData(b, k), b;
k.selectAll(".nv-noData").remove();
var t = k.selectAll("g.nv-wrap.nv-pieChart").data([e]),
u = t.enter().append("g").attr("class", "nvd3 nv-wrap nv-pieChart").append("g"),
v = t.select("g");
if (u.append("g").attr("class", "nv-pieWrap"), u.append("g").attr("class", "nv-legendWrap"), i)
if ("top" === j) d.width(n).key(c.x()), t.select(".nv-legendWrap").datum(e).call(d), f.top != d.height() && (f.top = d.height(), o = a.utils.availableHeight(h, k, f)), t.select(".nv-legendWrap").attr("transform", "translate(0," + -f.top + ")");
else if ("right" === j) {
var w = a.models.legend().width();
w > n / 2 && (w = n / 2), d.height(o).key(c.x()), d.width(w), n -= d.width(), t.select(".nv-legendWrap").datum(e).call(d).attr("transform", "translate(" + n + ",0)")
}
t.attr("transform", "translate(" + f.left + "," + f.top + ")"), c.width(n).height(o);
var x = v.select(".nv-pieWrap").datum([e]);
d3.transition(x).call(c), d.dispatch.on("stateChange", function (a) {
for (var c in a) l[c] = a[c];
p.stateChange(l), b.update()
}), p.on("changeState", function (a) {
"undefined" != typeof a.disabled && (e.forEach(function (b, c) {
b.disabled = a.disabled[c]
}), l.disabled = a.disabled), b.update()
})
}), q.renderEnd("pieChart immediate"), b
}
var c = a.models.pie(),
d = a.models.legend(),
e = a.models.tooltip(),
f = {
top: 30,
right: 20,
bottom: 20,
left: 20
},
g = null,
h = null,
i = !0,
j = "top",
k = a.utils.defaultColor(),
l = a.utils.state(),
m = null,
n = null,
o = 250,
p = d3.dispatch("tooltipShow", "tooltipHide", "stateChange", "changeState", "renderEnd");
e.headerEnabled(!1).duration(0).valueFormatter(function (a, b) {
return c.valueFormat()(a, b)
});
var q = a.utils.renderWatch(p),
r = function (a) {
return function () {
return {
active: a.map(function (a) {
return !a.disabled
})
}
}
},
s = function (a) {
return function (b) {
void 0 !== b.active && a.forEach(function (a, c) {
a.disabled = !b.active[c]
})
}
};
return c.dispatch.on("elementMouseover.tooltip", function (a) {
a.series = {
key: b.x()(a.data),
value: b.y()(a.data),
color: a.color
}, e.data(a).hidden(!1)
}), c.dispatch.on("elementMouseout.tooltip", function () {
e.hidden(!0)
}), c.dispatch.on("elementMousemove.tooltip", function () {
e.position({
top: d3.event.pageY,
left: d3.event.pageX
})()
}), b.legend = d, b.dispatch = p, b.pie = c, b.tooltip = e, b.options = a.utils.optionsFunc.bind(b), b._options = Object.create({}, {
noData: {
get: function () {
return n
},
set: function (a) {
n = a
}
},
showLegend: {
get: function () {
return i
},
set: function (a) {
i = a
}
},
legendPosition: {
get: function () {
return j
},
set: function (a) {
j = a
}
},
defaultState: {
get: function () {
return m
},
set: function (a) {
m = a
}
},
tooltips: {
get: function () {
return e.enabled()
},
set: function (b) {
a.deprecated("tooltips", "use chart.tooltip.enabled() instead"), e.enabled(!!b)
}
},
tooltipContent: {
get: function () {
return e.contentGenerator()
},
set: function (b) {
a.deprecated("tooltipContent", "use chart.tooltip.contentGenerator() instead"), e.contentGenerator(b)
}
},
color: {
get: function () {
return k
},
set: function (a) {
k = a, d.color(k), c.color(k)
}
},
duration: {
get: function () {
return o
},
set: function (a) {
o = a, q.reset(o)
}
},
margin: {
get: function () {
return f
},
set: function (a) {
f.top = void 0 !== a.top ? a.top : f.top, f.right = void 0 !== a.right ? a.right : f.right, f.bottom = void 0 !== a.bottom ? a.bottom : f.bottom, f.left = void 0 !== a.left ? a.left : f.left
}
}
}), a.utils.inheritOptions(b, c), a.utils.initOptions(b), b
}
有没有比编辑源代码更简单的实现方法？我用 css 做了几次尝试，但没有成功。
最佳答案
我找到了图例的类，这可能有点乱，但你明白了。
#chart svg {
height: 400px;
margin-top: -80px;
margin-bottom: 80px;
}
.nv-label text {
fill: rgb(255, 255, 255) !important;
}
section {
width: 400px;
margin: auto;
}
.nv-legendWrap {
transform: translateY(300px);
}
几个变化。
示例:
关于javascript - 如何使用 Nv.d3.js 库将饼图置于顶部？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33893587/