ABSTRACT Amplitude versus offset (AVO) analysis of pre-stack seismic data has made several advances since Shuey’s (1985) approximation to the Knott’s-Zoepprittz equation made it practical. By combining AVO attributes and geology, petrophysical properties of the rocks and fluids that make up the reservoirs that interpreters are interested in are better predicted than with AVO analysis alone. Lambda-Mu-Rho (LMR) analysis is one example of how interpreters are using advanced AVO analysis to identify hydrocarbons and reservoir rocks (Goodway et. al., 1997; Gray and Andersen, 2000). LMR analysis, even in the most classic of circumstances, requires cross plotting or the interpretation of multiple volumes of data to correctly interpret lithology and fluids. By using petrophysics to scale the Lambda-Rho (??) and Mu-Rho (µ?) volumes, lithology volumes can be based upon rock properties and AVO. Typically this is done through interactive cross-plot analysis of the LMR volumes which are often difficult to reproduce and save for future work.