d3.js nvd3.js - 获取y轴最小/最大值

Question

I'm using NVD3's lineChart model.

I need to force-set the min and max y-axis values relative to the actual ones, eg:

chart.lines.forceY([min/1.1,max*1.1]);

How can I get the current min/max y-axis values?

Answer 1

您可以通过chart.yAxis.scale().domain()获取当前域。

Answer 2

If you have already set the y-axis domain like so:

var yAxis = d3.svg.axis().scale(y)
    .orient("left").ticks(5);

y.domain([0, d3.max(yourData)]);

you can access the values through y . y[0] is the minimum, y[1] is the max.