A system for visual modification of data. The system comprising, an interface layer for displaying data and for receiving one or more visual inputs for modifying data; a data layer for storing data; and an analysis engine layer for connecting the interface layer and the data layer, wherein the analysis engine layer is configured to receive the one or more visual inputs from the graphical interface for modifying the graphical representation; modify the underlying data based on the visual inputs; modify a derived data based on the modified underlying data; and transfer the modified derived data to the interface layer for display.