| Author |
Comment/Response |
Andy Wilson
|
 03/08/99 06:23am
I'd like to extract the parameter values that I get when I use FindMinimum on a Likelihood function. I think it amounts to extracting part of an element from a list. Beyond that, I can't figure out how to do it. Do you have any suggestions?
I use the code below to find the minimum of a function of two variables, gm and gsd. I would like to take the values of gm and gsd at the minimum, assign them variable names, and use them in later functions.
In[208]:=
sally = FindMinimum[-func4,{gm,60,10,100},{gsd,4,2,100}]
Out[208]=
{110.635,{gm->54.2512,gsd->3.08502}}
What I would ultimately like to do is to pull out 54.2512 and name it ''gmmle'' and pull out 3.08502 and name it ''gsdmle'' so that I can use them as variables in a likelihood ratio test.
I tried to do this by using
In[216]:=
lucy = Flatten[sally]
Out[216]=
{110.635, gm--> 54.2512, gsd--> 3.08502}
and then
In[219]:=
marcy = lucy[[2]]
Out[219]=
gm--> 54.2512
But here I get stuck. How do I separate the number from ''gm-->''?
Thanks in advance for any suggestions you may have.
Andy Wilson
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