I would like to produce a bar chart with the x-axis being date and a single bar per date. The bar would have multiple sections, one for each row in a particular date and the magnitude dependent upon a third column.
My data has the first column as a date, the second column a user name, and the third column a quantity. There may be multiple rows for any given date, one row per user name and usage quantity. Each column section would reflect the usage for a user on a date.
Google has not helped so far.