GMS:PEST: Difference between revisions
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PEST (Parameter ESTimation) is a general purpose parameter estimation utility developed by John Doherty of Watermark Computing. The nonlinear [[GMS:Parameters|parameter]] estimation algorithm used by PEST is uniquely robust and powerful having been developed for use with complex environmental models. The purpose of PEST is to assist in data interpretation, model calibration, and predictive analysis. | PEST (Parameter ESTimation) is a general purpose parameter estimation utility developed by John Doherty of Watermark Computing. The nonlinear [[GMS:Parameters|parameter]] estimation algorithm used by PEST is uniquely robust and powerful having been developed for use with complex environmental models. The purpose of PEST is to assist in data interpretation, model calibration, and predictive analysis. | ||
GMS provides a custom interface to the PEST utility offering a simple way to set model parameters and a graphical user interface to run the model and visualize the results. The PEST interface in GMS can be used to perform [[GMS:Automated_Parameter_Estimation|automated parameter estimation]] for MODFLOW. The steps involved in setting up a PEST run are described in the [[GMS:Automated_Parameter_Estimation|automated parameter estimation]] topic. The PEST options are edited by selecting the '''Parameter Estimation''' command in the ''MODFLOW'' menu and then clicking on the ''PEST'' tab. PEST can be added to a [http://www.aquaveo.com/software/gms-pricing paid edition] of GMS, and can be run with parallel processing across one or multiple machines with the Parallel PEST Utility. | GMS provides a custom interface to the PEST utility offering a simple way to set model parameters and a graphical user interface to run the model and visualize the results. The PEST interface in GMS can be used to perform [[GMS:Automated_Parameter_Estimation|automated parameter estimation]] for MODFLOW. The steps involved in setting up a PEST run are described in the [[GMS:Automated_Parameter_Estimation|automated parameter estimation]] topic. The PEST options are edited by selecting the '''Parameter Estimation''' command in the ''MODFLOW'' menu and then clicking on the ''PEST'' tab. | ||
PEST can be added to a [http://www.aquaveo.com/software/gms-pricing paid edition] of GMS, and can be run with parallel processing across one or multiple machines with the Parallel PEST Utility. | |||
[[Category:Link to Store]] | [[Category:Link to Store]] | ||
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| GMS 10.3 || PEST 14.0 | | GMS 10.3 || PEST 14.0 | ||
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| GMS 10.4 || PEST 14.0 | |||
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| GMS 10.5 || PEST 14.0 | |||
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| GMS 10.6 || PEST 14.0 | |||
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| GMS 10.7 || PEST 14.01 | |||
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| GMS 10.8 || PEST 17.5 | |||
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==MODFLOW/PEST Parameter Estimation Model Wrapper== | |||
[[File:MODFLOW-PEST parameter estimation.png|thumb|450 px|''MODFLOW/PEST Parameter Estimation'' model wrapper dialog]] | |||
There are four sections of the ''MODFLOW/PEST Parameter Estimation'' model wrapper dialog | |||
The top left section features a graph that shows the model error vs. PEST iteration. To the right of the graph is a spreadsheet showing the model error and the parameter values for each PEST iteration. Below that, in the bottom right section, is another spreadsheet showing the results for each realization (run) and includes the number of PEST iterations, the model error, and the parameter values. In the bottom left section, a text window shows the output PEST prints to the screen when run from the command line. | |||
==PEST Files== | ==PEST Files== | ||
