Abstract: Browser-based software uses image tiling techniques to display interactive charts of large scale, time-based datasets. Scalable Vector Graphics instantiated from code loaded in memory associated with a server dynamically generates image tiles at the server, which tiles are then selectively called up and downloaded to a client system for display. The server consolidates requested data into averaged data points and then renders an overall graphic representation by appropriately assembling the averaged data points into discrete tiles. Mapping-based tiling software at the client system assembles a composite image of a portion of a chart/graph for a user-selected region at a selected resolution within a viewport of predetermined size, considerably improving graph interaction and reducing rendering times over existing Flash-based solutions.