Graphical Policy Analysis Tool

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Presentation transcript:

Graphical Policy Analysis Tool

Why GPAT? Organize and Analyze Results of Monte Carlo Simulations in RiverWare Alternative Hydrologic Scenarios / Histories: MRM Alternative policies Information from Data Statistics Graphs Dynamic generation Presentations and Documents e.g. Stakeholders meetings and EIS

What is GPAT? Excel Add-in written in VBA Inputs are Excel Workbooks Download from the RiverWare web site Inputs are Excel Workbooks Dimensions are Slots, Time, Runs, and Policies Variety of orientations Outputs are Charts and Worksheets in a Workbook Typical Chart: several statistical time series Present directly or paste into documents

2008 RiverWare User Group Meeting

Compare Traces Compare traces under different policies

Simple Statistics Minimum Maximum Mean Std. Dev. Median Percentiles AlternativeMethods

Distributions Histogram CDF One date All time Annual peak Maximum for a given duration

Probability of Events Binary events Exceedance Occurrence in a range Compound Events

To Access and Run GPAT Download from RiverWare download web page Execute RiverWare in Multiple Run Management mode One run for each Hydrologic Scenarios or Histories EITHER Generate RDF file Followed by separate Excelwriter run OR Excel output directly from RiverWare Large memory demand: Excelwriter and RiverWare Generate an Excel workbook One MRM run and workbook per policy *GPAT allows alternative orientations and sources of input

Use GPAT Output for WR Planning and Decision-making Plots can help stakeholders and decision makers understand future risks and opportunities under alternative options Statistics can help identify threshold points Data from Statistical Analysis can be used as performance measures in MCA