Views will collapse when all data is filtered out. However, other controls, such as quick filters, parameters, images, legends, and textboxes, will not collapse and don't have an option to dynamically show or hide. Yet, very often, in a dynamic dashboard, you might want to show or hide these objects. Sometimes parameters don't apply when other selections have been made. Look at the simple example in the previous section. The color legend, which was automatically added to the dashboard by Tableau, applies to the map. But when the bar chart is shown, the legend is no longer applicable.
Fortunately, we can extend the technique we used in the previous section to expand a view to push items we want ...
