Javascript 反转刻度功能
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时间：2020-08-22 22:27:23 来源:igfitidea点击:
Invert scale function
提问by ngungo
This is interesting to me. Look at the following D3 code:
这对我来说很有趣。看下面的D3代码：
var scale = d3.scale.linear()
.domain([100, 500])
.range([10, 350]);
scale(100); //Returns 10
scale(300); //Returns 180
scale(500); //Returns 350
Is there a function that inverse of scale? For example,
是否有与比例尺成反比的函数？例如，
inverseScale(10); //Returns 100
inverseScale(180); //Returns 300
inverseScale(350); //Returns 500
回答by OrionMelt
Yes, there is, and it's aptly named invert.
是的，有，而且它的名字恰如其分invert。
console.log(scale.invert(10)); //Returns 100
console.log(scale.invert(180)); //Returns 300
console.log(scale.invert(350)); //Returns 500
