In an approach to displaying data, one or more computer processors receive a plurality of coordinates of an overlay on a graphical data display, such that the plurality of coordinates indicate a position and a size of the overlay. The one or more computer processors retrieve one or more data points from the graphical data display. The one or more computer processors de-emphasize at least a portion of the one or more retrieved data points. The one or more computer processors display, in the overlay, one or more retrieved data points of the graphical data display that reside within the plurality of coordinates of the overlay.