// define scales
xScale
    .domain(d3.range(0, xMax))
    .rangeRoundBands([0, width], 0.2, 0.2)

yScale
    .domain([0, yMax])
    .range([height, 0])

// draw bars
d3.
    .selectAll(".bar")
    .data(data)
    .enter()
        .append("rect")
    .attr("class", "bar")

// draw the y axis (with long horizontal ticks)
yAxis
    .orient('left')
    .ticks(10)
    .tickPadding(15)
    .tickSize(-width)

d3.selectAll(g.axis-y)
    .attr("transform", "translate(0, 0)")
    .call(yAxis)