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st: RE: RE: RE: RE: Accessing to a subvector of vector like
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
st: RE: RE: RE: RE: Accessing to a subvector of vector like
Date
Mon, 6 Feb 2012 19:06:37 +0000
I think you've changed the question.
Please show us the exact code you used and explain in what sense it is "not working". Otherwise my answer can only be a guess that you did something wrong.
Nick
[email protected]
Nakelse, Tebila (AfricaRice)
Thank you Nick
I tried this solution. But it still not working.
I want to use expression(pnl_exp) in margins. But if I use this solution stata may not know whether this coefficients are from a estimation and may not use this information to compute the matrix of covariance for example.
Nakelse, Tebila (AfricaRice)
Thank you Nick. It is okay.
Nick Cox
Just copy to a regular vector first:
sysuse auto
gen gpm = 1 / mpg
regress gpm weight length displacement
. mat li e(b)
e(b)[1,4]
weight length displacement _cons
y1 .00001174 .00006458 5.517e-06 .00152916
. mat b = e(b)
. mat b1 = b[1, "weight".. "length"]
. mat li b1
b1[1,2]
weight length
y1 .00001174 .00006458
Nick
[email protected]
Nakelse, Tebila (AfricaRice)
I would like to access to a subvector of a vector like e(b) or e(V).
Stata allows to have et sub-element as _b[varname]. Is it possible to have _b[varlist] ?
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