transform linechart to 'squared' chart not being a barchart - d3.js

Question

I just created a linechart but what I would really like is that the line is not going from point to point, but that the line is more squared.
I don't know if this has a specific name, but these pictures should make it all a bit more clear:
This is what I have:
This is what I want:
Is there a way to do this in d3 without having to create a script which adds the 'extra' points?
This is the code I use for the line chart:
var maxDepth = graphObj[graphObj.length-1].maxDepth ;
$('#floodRiskChart').html('');
var margin = {top: 5, right: 5, bottom: 50, left: 65},
width = 410 - margin.left - margin.right,
height = 210 - margin.top - margin.bottom;
var x = d3.scale.linear()
.range([0, width]);
var y = d3.scale.linear()
.domain([0, maxDepth ])
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var line = d3.svg.line()
.x(function(d) { return x(d.exceedance); })
.y(function(d) { return y(d.depth); });
var svg = d3.select("#chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
graphObj.forEach(function(d) {
//d.date = parseDate(d.date);
d.exceedance = parseFloat(+d.exceedance);
d.depth= parseFloat(+d.depth);
});
x.domain(d3.extent(graphObj, function(d) { return parseFloat(d.exceedance); }));
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.attr("x", "25%")
.attr("dy", "3em")
.html("chance");
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", -50)
.attr("dx", 0)
.style("text-anchor", "end")
.html("depth");
svg.append("path")
.datum(graphObj)
.attr("class", "line")
.attr("d", line);

Answer 1

you need to add .interpolate('step-after') on the line generator, like so:
var line = d3.svg.line()
.interpolate('step-after')
.x(function(d) { return x(d.exceedance); })
.y(function(d) { return y(d.depth); });
this will give you that result, more info can be found here: enter link description here towards the end of the page