A system and a method are disclosed for visually displaying data points using stacked bar charts on a display screen with limited display area. A magnification region allows presentation of detailed information for a stacked bar compared to other stacked bars displayed. A stacked bar within a magnification region can be further magnified to display additional information for individual bars within the stacked bar. An individual bar is expanded to a height suitable for displaying information associated with the bar. The stacked bar chart can be moved relative to the magnification region thereby changing the stacked bar displayed within the magnification region.