Sensitivity analysis

[Milkessa Gebeyehu Homa]

Dear all,

I was trying to conduct sensitivity analysis using swat+toolbox. However it fails to run swat+. The error message says something like the maximum value is smaller that the minimum value for one or more parameters. My question is how can I identify which parameter it is? I loaded the parameters in set and used the default parameter ranges.

My second question why it is in general very slow? Is it from my computer or ....?

Best regards!

Milkessa

[Mario Fomaca Jr]

Avoid using the default parameter ranges. Narrow them down to improve the effectiveness of the sensitivity analysis. You can verify the valid ranges for each SWAT+ parameter in the cal_parms.cal file located in the TxtInOut folder.

I’ve noticed that the ranges defined in the SWAT+ Toolbox do not always match those specified in the cal_parms.cal file. For example, the parameter prf.bsn has a range of 250 to 700 in the Toolbox, whereas in the cal_parms.cal file its range is 0 to 2.

Mario

[Fabricio_Jara]

Hola Milkessa y  Mario, 
yo tengo el mismo problema, pero es interesante que ese mensaje de error solo salta con el método LHS, con todos los demás corre con los parámetros de default del Toolbox.
Además, instalé las mismas herramientas con la misma configuración en una CPU y en ella corre perfectamente el análisis con LHS. Talvez el error no es del Toolbox sino de la PC.

[Milkessa Gebeyehu Homa]

Yes, right you are! I used the same the parameter space and used Sobol (which requires a large number of simulations but ....). 

Thank you 

Milkessa

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