JFreeChart Datetickunit question

Question

Hi,

I'm trying to plot a weekly XY plot with irregular spacing between data point. That means the first data point and second data points might not be spaced 7 days apart, although the rest of the data points will be evenly spaced. How do I plot the chart so that all the data points are labelled on the x-axis?

(I've used DateTickUnit class with 7 day tick spacings, but to no avail.) Or is there an alternate way to do this nicely?

Thanks!