[R] passing parameters in optim()

[Nancy Lo]

Hi all,

I am using optim() to get estimate for parameter 'a' which will minimize
the output of lprob.catch(a) and I got an error message:

> optim(2,lprob.catch(x, freq,1, 0.5,0.5, a,- 0.7, 1, -0.7,0.1,
1,0.2,2,1,data.sf.mont))
Error in catch2.fun(k, f1, f2, a, b, A, B, R, n0, av, index.n) :
        Object "a" not found


Why wasn't the initial value of a=2 passed to catch2.fun() which was
called by lprob.catch()?

Thank you for your time.


Nancy


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