thank you very much Mr john Kane ,Mr Jorge Ivan Velez i first do an cpa method for my LogNeperien (data hydrology ) (30years of inflows) for 12 months to be sure that my residuals normality will be true in order to reconstitute the 30years of the data with pca in an other way choice of number of PC and simulate residuals for each month and also i must generate 30years in future i need this for an optimization model
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