Hello,
Since I didn't receive any answer to the problem I have, I am going to try to better explain what is going on...maybe I wasn't clear enough...
I have a problem with “nlcom” due to a problem of length.
I try to estimate a lot of coefficients from a first estimation. My program consists in writing all the coefficients I want in some macros (local) and run the nlcom command with only one big macro.
The problem of length comes from the fact that some coefficients I have to estimate are also combinations of coefficients I estimate in the same “nlcom” command.
For example, some coefficients I have to estimate after my estimation are:
local a14 "(a14: 1 - ( _b[a1]+ _b[a2]+ _b[a3]+ _b[a4]+ _b[a5]+ _b[a6]+ _b[a7]+ _b[a8]+ _b[a9]+ _b[a10]+ _b[a11]+ _b[a12]+ _b[a13]))"
local nlcom "`nlcom' `a14'"
local "(b14: - ( _b[b1]+ _b[b2]+ _b[b3]+ _b[b4]+ _b[b5]+ _b[b6]+ _b[b7]+ _b[b8]+ _b[b9]+ _b[b10]+ _b[b11]+ _b[b12]+ _b[b13]))"
local nlcom "`nlcom' `b14'"
local g1vs1 "(g1vs1: _b[teta_1vs1] - _b[a1] * _b[a1] + _b[a1])"
local nlcom "`nlcom' `g1vs1'"
local g1vs2 "(g1vs2: _b[teta_1vs2] - _b[a1]* _b[a2])"
local nlcom "`nlcom' `g1vs2'"
local g1vs3 "(g1vs3: _b[teta_1vs3] - _b[a1]* _b[a3])"
local nlcom "`nlcom' `g1vs3'"
local g1vs4 "(g1vs4: _b[teta_1vs4] - _b[a1]* _b[a4])"
local nlcom "`nlcom' `g1vs4'"
local g1vs5 "(g1vs5: _b[teta_1vs5] - _b[a1]* _b[a5])"
local nlcom "`nlcom' `g1vs5'"
…
local g1vs14 "(g1vs14: -( _b[teta_1vs1] - _b[a1] * _b[a1] + _b[a1] + _b[teta_1vs2] - _b[a1] * _b[a2] + _b[teta_1vs3] - _b[a1] * _b[a3] + _b[teta_1vs4] - _b[a1] * _b[a4] + _b[teta_1vs5] - _b[a1] * _b[a5] + _b[teta_1vs6] - _b[a1] * _b[a6] + _b[teta_1vs7] - _b[a1] * _b[a7] + _b [teta_1vs8] - _b[a1] * _b[a8] + _b[teta_1vs9] - _b[a1] * _b[a9] + _b[teta_1vs10] - _b[a1] * _b[a10] + _b[teta_1vs11] - _b[a1] * _b[a1 1] + _b[teta_1vs12] - _b[a1] * _b[a12] + _b[teta_1vs13] - _b[a1] * _b[a13] + 0))
/*In fact g1vs14 is equal to: -( g1vs1 + g1vs2 + g1vs3+ g1vs4 + g1vs5 + …. +g1vs13) but I can't write this since the g1vs1, g1vs2...aren't estimated yet, they are in some locals*/
local nlcom "`nlcom' `g1vs14'"
local g2vs14 "(g2vs14: -( _b[teta_1vs2] - _b[a2] * _b[a1] + _b[teta_2vs2] - _b[a2] * _b[a2] + _b[a2] + _b[teta_2vs3] - _b[a2] * _b[a3] + _b[teta_2vs4] - _b[a2] * _b[a4] + _b[teta_2vs5] - _b[a2] * _b[a5] + _b[teta_2vs6] - _b[a2] * _b[a6] + _b[teta_2vs7] - _b[a2] * _b[a7] + _b[teta_2vs8] - _b[a2] * _b[a8] + _b[teta_2vs9] - _b[a2] * _b[a9] + _b[teta_2vs10] - _b[a2] * _b[a10] + _b[teta_2vs11] - _b[a2] * _b[a11] + _b[teta_2vs12] - _b[a2] * _b[a12] + _b[teta_2vs13] - _b[a2] * _b[a13] + 0))"
local nlcom "`nlcom' `g1vs14'"
….
After that, I run : nlcom `nlcom', post
The problem is that for some coefficient I want (g`i'vs14 with i from 1 to 14, especially the g14vs14) the expression is quite long because I use the expression of the g`i' `j' with i and j <14. So Stata stops tells me :expression too long r(130);
How can I have all my coefficients in one matrix e(b) and e(V) doing several nlcom? (in order to have smaller expression using the coefficients obtained in a first nlcom...)
If someone has an idea…
Thank you very much.
Valérie
-------------------------------
Valérie OROZCO
Toulouse School of Economics (INRA-GREMAQ)
21, allée de Brienne
F-31000 Toulouse, France
MF 426
+33 5 61 12 85 91
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