How have you created the tempweek in your chart? And have you unchecked 'suppress zero values' in presentation tab?
One approach might be to create a master calendar (search for master calendar here in the forum, there are tons of threads about this topic, including sample files), then limit the amount of weeks shown to the required ten weeks by either a calculated dimension or set analysis.
You probably need a date island containing the 10 week period. You would use the date island field as the dimension and sumif expressions for the quantities. If you turn off suppress zeroes, you should get all the weeks whether there is data or not.
There are quite a few posts in this and similar issues - search for date or data island and "asof dates"