Hide values on the X axis

Hi,
I would like to know if it is possible to "filter" values on the X axis.

Let me explain: imagine to have 3 data rows (or columns) A,B,C and 5 values for each (one for category: V,W,X,Y,Z).

As we know, C3 automatically puts the legend for A,B,C and allows, by clicking them, to toggle the data serie.
But what if I would like to hide the representation for the values in the category X (so, to draw values just for V,V,Y,Z)? It is possible? I know there is the zoom feature... but does a feature for my request exist? Or have I to manually implement it modyfing the existing data serie?

Thanks