I had a question as it pertains to building a chart portlet.
I currently have created a financial portlet that displays the actual and planned costs for a given project as well as a month by month breakdown of those costs as a virtual attribute. The users input their planned and actual dollar amounts for each month as numbers in the portlet.
Since this breakdown is a time scaled value and virtual attribute showing each month's value, my question would be, what steps could I take to create a line graph from this same information that the users input? The goal of this line chart is to show the planned cost and actual cost as they relate each month and since this attribute is virtual, I am unable to choose it from the layout options when constructing a chart.