R help - Feb 2015 - Caleberating weights

Hi,

Suppose I have weights di, I want to calibrate thesis weights

I used the objective function

Obj = Sum( wi/di-1)^2/2   ; where will be the resulting calibrated weights

My calibration constraint is

Sum(wizi) = Z      , Z is pop total    (1)

I need r-code to minimize 'Obj' subject to the constraint (1) to obtain
calibrated weights wi

Thanks




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Hi,

  It's not clear what wizi is in the constraint Sum(wizi) = Z.  If you can
provide some data, it may make the problem easier to understand.



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