AI-GEOSTATS: Back transforms and simulations

[Chris Lloyd]

Hello,   The subject of logs and back transforms has been discussed a great deal on the list and I’ve seen much material concerning back transforms following kriging of log transformed data (e.g., the approach outlined by Cressie in his book ‘Statistics for Spatial Data’ and many other texts). However, I am unsure how to proceed if the objective is simulation.   I have applied sequential Gaussian simulation to log (base 10) permeability data and I want to back transform the simulated realisations. I would be grateful for any suggests from list members as to how best to back transform the values in this case. There are too few data to make an indicator approach feasible.   I will post a summary of answers. Many thanks in advance.   Chris Lloyd