A computing device displays a graphical user interface on a display. The graphical user interface has a data visualization region that displays a primary data visualization, which includes a plurality of visual marks. The primary data visualization represents a first set of data fields of a plurality of data fields from a dataset. The device receives user input in the graphical user interface to select one of the visual marks. In response to the user input, the device generates a secondary data visualization, filtered according to one or more data values. The data values correspond to the first set of data fields and are associated with the selected visual mark. The secondary data visualization represents a second set of data fields from the dataset. The device then displays the generated secondary data visualization in a tooltip for the selected data mark, overlaying a portion of the primary data visualization.