jqplot show labels using date axis renderer

i'm using jqplot 1.0.开发者_如何学Python0b1_r746. i want to display some time periods using the date axis renderer. the chart looks like as follows:

now i would like to show the begin and end date as labels of one period. i have tried to use the pointLables plugin, but with no success.

---

the usage point lables labels was the right approch. the label is the last element of each point, e.g.

var line1=[['2008-06-30',1,'line1'], ['2008-7-30',1,'line1']];

then you have to use the point lables configuration, e.g.

pointLabels: {
    show: true
 }
},

see the docs for futher information: http://www.jqplot.com/docs/files/plugins/jqplot-pointLabels-js.html