1. A computer system including a client computer configured with a graphical user interface display system and the client computer being operatively coupled to a processor configured to process a base vector comprising data stored and retrieved from an online analytical processing cube or OLAP cube stored in a database, said graphical user interface display system configured on the client computer comprising: a base vector panel comprising one or more dimensions associated with data stored in the OLAP cube, and said one or more dimensions comprising a user responsive component for selecting a member associated with each of said one or more dimensions; a comparison vector panel comprising one or more dimensions associated with data stored in the OLAP cube, and said one or more dimensions corresponding to said one or more dimensions in said base vector panel; a time scope panel configured for setting a time frame for said base vector and said comparison vector, said time frame comprising a start period setting control and an end period setting control, said start period setting and said end period setting controls being responsive to user input; a data analysis processor; and a data analysis panel comprising a base vector display, a comparison vector display and a delta vector, said base vector display being configured to render the data values for the cells in the OLAP cube corresponding to said dimensions and said members selected in said base vector panel, said delta vector comprising a plurality of data cells corresponding to said one or more dimensions of said base vector panel and each of said data cells being responsive to manipulation by a user and render the manipulated data values for performing a delta analysis, and said comparison vector display being configured to render data values for said dimensions and said members selected in said comparison vector panel wherein said data values are generated by said data analysis processor performing said delta analysis.