CODEWITHSUNDEEP
javascriptd3.js
ngungo
ngungo

Reputation: 5322

Invert scale function

This is interesting to me. Look at the following D3 code:

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,

inverseScale(10);   //Returns 100
inverseScale(180);  //Returns 300
inverseScale(350);  //Returns 500

Upvotes: 56

Views: 33105

Answers (1)

OrionMelt
OrionMelt

Reputation: 2601

Yes, there is, and it's aptly named invert.

console.log(scale.invert(10));   //Returns 100
console.log(scale.invert(180));  //Returns 300
console.log(scale.invert(350));  //Returns 500

Upvotes: 89

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