We'll create a bar chart in the data portal showing where the money goes from Cook County's checkbook. The bar chart will summarize the spending from December 2010 by totaling the amount for the biggest categories.
You will see how to use the roll-up filter to create spending for each description (I think of them as categories), the sort filter to order the categories amounts from most to least, and filter this to show just the categories where $100,000 or more was spent. Next, use the bar chart visualization to create a chart that looks like this:
Ready to watch? Here's the link to the YouTube video.