So far as I can tell, Excel Services is not capable of automatic data refreshes when using SharePoint Lists as a data source. If you're looking for this functionality, you have two choices: PowerPivot (best) or scheduled client-side data refreshing (ghetto).

In order for Excel Services to communicate with other data …

I really thought making SharePoint Lists into pretty graphs and charts in SharePoint would be far more straightforward than it's turned out to be. Recently, I was given a project where I had to do just that and while I read through about 30 SharePoint BI books, none really gave a straight answer on which of the various …

Recently, while using Excel Services to access PivotCharts and PivotTables within Excel Web Viewer Web Parts and PerformancePart Dashboards, I encountered vertical and horizontal scrollbars that would not go away, no matter how much I tried resizing. …

I'm currently working on a project where I need to quickly make pretty graphs and charts for data in small but important SharePoint lists. After looking through a number of books and consulting with my SharePoint buddies, PowerPivot for SharePoint 2010 seems to be the best tool for the job.

Getting it to work hasn't …