A system and method for adjusting a displayed visualization, such as a tree diagram. An example method includes providing a first mechanism for facilitating adjusting spacing between plural leaf nodes of a visualization by a first factor and providing a signal indicative of the first factor in response thereto; and employing a second mechanism to display an updated visualization in response to the signal, wherein spacing between leaf nodes of the updated visualization is adjusted relative to the initial visualization based on the signal, such that a region defined by a group of leaf nodes, whose spacing therebetween has been adjusted, is shrunk or enlarged based on the first factor. In an illustrative embodiment, the example method further includes adjusting the spacing between leaf nodes so that leaf nodes overlap each other.