> dt + scale_x_date() > dt + scale_x_date(format="%m/%d") > dt + scale_x_date(format="%W")+ You can only have one x scale - the last one overrides all the others. The date scale (currently) doesn't have a limits setting (what units would you specify it in?), but you could use subset to plot only the subject of interest. Hadley -- http://had.co.nz/