8. A computer-implemented method, comprising: receiving hierarchical information for nodes at different hierarchical levels; generating a graphical tile for each node; arranging graphical tiles for each hierarchical level into graphical layers; arranging the graphical layers in a vertical stack; presenting, in a user interface, a three dimensional orthographic projection view of the stack of graphical layers, wherein the stack of graphical layers each has multiple graphical tiles on a display; and moving a first set of graphical tiles from a graphical layer to a top layer of the vertical stack when the graphical tiles are selected.
8. A computer-implemented method, comprising: receiving hierarchical information for nodes at different hierarchical levels; generating a graphical tile for each node; arranging graphical tiles for each hierarchical level into graphical layers; arranging the graphical layers in a vertical stack; presenting, in a user interface, a three dimensional orthographic projection view of the stack of graphical layers, wherein the stack of graphical layers each has multiple graphical tiles on a display; and moving a first set of graphical tiles from a graphical layer to a top layer of the vertical stack when the graphical tiles are selected. 13. The computer-implemented method of claim 8 , comprising generating a graphical chart for a set of graphical tiles or a graphical layer when the set of graphical tiles or graphical layer is selected.