•I am using a bar chart as a filter selector for all views on a tab, can this be restricted to allow only one selection at a time? •Can labels be hidden in a bar chart
Rick - Sidebar category filters can be set to allow only one value at a time, i.e. mutually-exclusive value filtering by ticking 'Restrict to single value' from the filter device drop-down.
If you mean restricting mouse selection to just one bar in a Bar View (or one segment inside a stacked bar) and letting brushing fade the other views, or setting other views to Selection subsets to show drill down, then no, this is not currently possible.
Selection is a free-form mouse activity potentially used for several things on all views/visualisations including generating views of selected details. It can be used, in conjunction with Keep and Move for sequential filtering, but without restrictions.
Some options: 1. Add a formula field that classifys records by mutually-exclusive values, like [Month] then set a sidebar filter restricted only a singel month. Soon, you will be able to add this kind of filter INSIDE the Bar View, rather than on the Sidebar. 2. Add a footer to the Bar View instructing the user to select just one bar at a time "for best results" 3. Both of the above