Wednesday, December 4, 2002, 4:50:04 PM, Nick Cox wrote:
> Revising history is best left
> to science fiction writers and, indeed,
> historians.
Well put, Nick. But if I may, I want to emphasize that the reason I
wish to change values of e(b) is only for the purpose of exploring the
data and properties of an estimator which is a function of the
predicted values. Please spare me with the details. (I know what I am
doing.)
So, from a pure technical point of view, is it possible to change
values of e(b)?
HJW
>> Is there any way to change elements of the coefficient vector e(b)
>> obtained after an estimation? For example, suppose I want to
>> replace the 5th element of the coefficient vector by a value of
>> 2.2; the following does not work:
>>
>> . mat e(b)[1,5] = 2.2
>> matrix operation not found
>> r(501);
>>
>> I know the following works:
>>
>> . mat b0 = e(b)
>> . mat b0[1,5] = 2.2
>>
>> but I want to work with e(b) since I'll later use -predict- to do
>> some experiments, and I assume that -predict- recognizes e(b)
>> only.
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