I found the issue to be that my chart was enclosed within a <table>
I want to display two charts side by side. I'd like to use the <table> but can't find a way view the charts this way. I understand that when using the unit.percentage() that it is related to the container(in this case a table tag) in which the chart is enclosed. However, I assigned my table a width and height of 100% and still no success. Your help is appreciated.