Question

I am current working on library d3.js.I have line graph using
Dynamic Line Graph
Here we have option of drawing power linear and log.
But my problem is that I might have some values zero in my data set and as log 0 is undefined so the code is unable to plot it.
Here in my code the scale set like this

y = d3.scale.log().domain([0.1, max_y _value]).range([h, 0]).nice();

and this is how it is used

  lineFunction = d3.svg.line()
        .y(function(d) {
          return y(d);
        });

I know that its an odd question.But is there a way by which I can handle log 0 value so that if I have single zero value the rest of them are plotted correctly.
Can I gave two domain and range in same statement (to handle 0 value) if yes than how will it bind to y axis?

Thanks any help will be appreciated.

Answer 1

I solved my problem by using a clamp function. This is how I have changed the code:

y = d3.scale.log().clamp(true).domain([0.1, max_y _value]).range([h, 0]).nice();