Visualizing hierarchical time-series data

A non-transitory computer readable storage medium comprising a computer readable program for visualizing data, wherein the computer readable program when executed on a computer causes the computer to perform the steps of:

• forming a plurality of hierarchically related graphs having a common time-series axis;
• displaying the plurality of hierarchically related graphs in a linear arrangement, such that shared values on the common time-series axis align for each graph;
• and
• automatically updating the plurality of hierarchically related graphs in accordance with a user selection of an element in a data hierarchy by removing graphs below a lowest-order common ancestor in the data hierarchy between the user selection and a previously displayed selection and replacing the removed graphs with new graphs that reflect the user selection.