I am building a bar chart using nvd3's multiBarChart and need to adjust the position of rotated x-axis labels:

![enter image description here](https://i.stack.imgur.com/QSnPM.png)

```
var chart = nv.models.multiBarChart();
...
chart.rotateLabels(-90);

```

I would like the column labels to not overlap the chart and be centered under each bar. I could select the labels after plotting the chart and adjust them but is there an easier way?