JS Sencha Touch Charts: max length of label on axis

i'm working with sencha touch charts. Line chart if to be correctly. My axis labels values is 'Category'. Is there any property to set max length of label ? Lets say 5 symbols. And id label value is more t开发者_如何学编程han 5 symbols, then display '...' in the end. Because some times labels a too long, and if so, than they disappear. Thanks in advance...

Have a look at

com.sencha.gxt.chart.client.chart.axis.NumericAxis.createLabels()

there are the labels created.