Abstract: A method and system to generate chart models are disclosed. Graphs may be rendered more efficiently by utilizing chart models, where multiple chart models are be generated utilizing the same set of chart data. Each chart model may be utilized to render a corresponding chart. In order to generate a chart model, a set of data may be totally disassembled first and then reassembled in an appropriate manner (e.g., according to a desired chart description). Disassembling may include, from a set of data, extracting data corresponding to all X coordinates (all abscissas), extracting data corresponding to all categories, and extracting the values corresponding to each abscissa-category pair. Reassembling may include generating a new set of data or a model, according a sorting logic.