答案 0 :(得分:2)
首先制作如下所示的颜色类别
var c10 = d3.scale.category10();
将颜色定义为如下图所示的函数
color: function(d,i){console.log(i); return c10(i)},
接下来,我们在nvd3的渲染事件之后在svg defs
部分定义渐变。(读取内联注释)
dispatch: {
renderEnd: function(e) {
//make as many gradient as many slices in the pie.
var grads = d3.select("svg").append("defs").selectAll("radialGradient").data($scope.data)
.enter().append("radialGradient")
.attr("gradientUnits", "userSpaceOnUse")
.attr("cx", 0)
.attr("cy", 0)
.attr("r", "100%")
.attr("id", function(d, i) {
return "grad" + i;
});
//gradient start is white
grads.append("stop").attr("offset", "0.5%").style("stop-color", "white");
//gradient end is the color of the slice
grads.append("stop").attr("offset", "27%").style("stop-color", function(d, i) {
return c10(i);
});
//to the slice add the fill for the gradient.
d3.selectAll(".nv-slice path").attr("fill", function(d, i) { return "url(#grad" + i + ")"; })
}
},
工作代码here
希望这有帮助!