How do I smooth by bin means?

For an assignment, i need to use smoothing by bin means. Where you sort a value, create bins of the same size, and replace the value with the bin mean.I'm having a tough time finding this feature. Discretization is the only section that discusses binning and I didn't see anything dealing with means in the transformations section. Does RapidMiner support this?

After searching a bit, I've only seen this technique mentioned in academic papers and presentations. Is this not a common technique for professionals? What is a more preferred smoothing approach?

Thanks,
Jamison