Yes we can do in calculated dimension in dimension tab.
Calculated dimensions are used to restrict the data in dimension level
Dimension tab----> calculated dimension-----> for suppose ur above requirement
It display only Shirts which having color Blue.
Hope it helps u. If u want more post ur sample application.
Thanks for the advice. It didn't give the results I hoped for! so it occurs to me that maybe I'm not asking the right question. I only want the chart to display data where the value (narrative) of the primary dimension is a certain value. e.g.My dimension lists 50 items, but I only want the chart to display data relating to 1 item in that list.
Can you help?