用d3.js填充一半的圆 [英] Half filled circle with d3.js

问题描述

我正在尝试用d3.js创建一个半圆，就像

I am trying to create a half filled circle with d3.js to be like this. I didn't find any example of how to do it. How can this be done with d3.js?

推荐答案

是的，您可以使用

Yes, you can do that with an SVG gradient. All you have to do is define it and then use it as fill for the circle.

var grad = svg.append("defs").append("linearGradient").attr("id", "grad")
              .attr("x1", "0%").attr("x2", "0%").attr("y1", "100%").attr("y2", "0%");
grad.append("stop").attr("offset", "50%").style("stop-color", "lightblue");
grad.append("stop").attr("offset", "50%").style("stop-color", "white");

svg.append("circle")
   .attr("fill", "url(#grad)");

JSfiddle 此处.

JSfiddle here.

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