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From |
Valerie Orozco <Valerie.Orozco@toulouse.inra.fr> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
st: st : Problem with nlcom (expression too long) |

Date |
Thu, 21 Feb 2008 14:41:39 +0100 |

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 ------------------------------- * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**st: RE: st : Problem with nlcom (expression too long)***From:*"Gustavo Sanchez" <gsanchez@stata.com>

**Re: st: st : Problem with nlcom (expression too long)***From:*"Jesper K. Hansen" <jkh-stata@msecon.eu>

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