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gr4j-cpp

C++ implementation of GR4J hydrologic rainfall-runoff model. Currently a proof of concept project, but will be improved. Tested using https://gitlab.irstea.fr/HYCAR-Hydro/ExcelGR/raw/master/GR4J/GR4J_EN.xlsx outputs.

Usage

gr4j.exe --precipitation pathToPrecipitationData --pet pathToPETData --discharge pathToDischargeData --parameters pathToParametersData --out RsquaredOutputFile

If you want to specify the parameters in the command line, use the following arguments:

Argument Value
-x1 x1
-x2 x2
-x3 x3
-x4 x4
-s s
-area area

Do not use --param with the arguments above.

Contents of --precipitation: Each line must correspond to value of that day.

Contents of --pet: Each line must correspond to value of that day.

Contents of --discharge: Each line must correspond to value of that day.

Contents of --out: Outputs the result of Rsquared method.

Contents of --param:

Line Value
1 X1 Value
2 X2 value
3 X3 value
4 X4 value
5 Area of catchment (square km)
6 Value of S

Compiling

With Visual C++ 19:

/Ox /EHsc /Yc /nologo /MD /I \includes /D UNICODE /D _UNICODE /Fo:intermediates\ GR4J.cpp FileReader.cpp /Fe: \gr4j.exe main.cpp

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