javascript - Convert given range values to domain values in D3 -



javascript - Convert given range values to domain values in D3 -

i have linear scale:

var xrange.range([0, parentwidth]).domain([0, 100]);

now on mouseover xy coords of mouse cursor using d3.mouse(container). show floating tooltip. need set xy values calculated mouse position according xrange scale.

how do it? or have create scale swapped range , domain values?

no need scale. linear (numeric) input can utilize linear.invert(), which:

returns value in input domain x corresponding value in output range y. represents inverse mapping range domain.

example:

var x = d3.scale.linear() .domain([0,50]) .range([0,100]); // domain range: x(25); // 50 // range domain: x.invert(50); // 25

javascript d3.js

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