Domain error(s) in nonlinear functions. Check bounds on variables.

[Archiver]

Hi all,
When I run my model I get this error - Domain error(s) in
nonlinear functions.
Check bounds on variables. when I click on the error it gives me

ERRORS/WARNINGS IN EQUATION EQ64(cext)
1 error(s): vcPower: FUNC DOMAIN: x**c, x < 0

**** ERRORS/WARNINGS IN EQUATION EQ87
1 error(s): vcPower: FUNC DOMAIN: x**c, x < 0

EQ64(x).. EXD(x) =e= EXDO(x)*[e*PWX(x)/PE_fob(x)]**sigma_XD(x);
EQ87.. PIXINV =e= PROD[i$gamma_INV(i),(PC(i)/PCO(i))**gamma_INV(i)];

The error for equation 64 is however peculiar to only one of the
commodities ( cext) out of the 10 commodities in my model. please can
anyone help me fix this.
thanks for your help always


TAIWO ADEREMI
PHD CANDIDATE
UNIVERSITY OF IBADAN

[Archiver]

Hi Taiwo
If you define the variable as positive and give a lower bound of 0.0001, you will probably don't have this problem anymore.
Renger

-----Ursprüngliche Nachricht-----
Von: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] Im Auftrag von TAIWO ADEREMI
Gesendet: Saturday, October 20, 2012 6:54 PM
An: gamsworld
Betreff: Domain error(s) in nonlinear functions. Check bounds on variables.

Hi all,
When I run my model I get this error - Domain error(s) in nonlinear functions.
Check bounds on variables. when I click on the error it gives me

ERRORS/WARNINGS IN EQUATION EQ64(cext)
1 error(s): vcPower: FUNC DOMAIN: x**c, x < 0

**** ERRORS/WARNINGS IN EQUATION EQ87
1 error(s): vcPower: FUNC DOMAIN: x**c, x < 0

EQ64(x).. EXD(x) =e= EXDO(x)*[e*PWX(x)/PE_fob(x)]**sigma_XD(x);
EQ87.. PIXINV =e= PROD[i$gamma_INV(i),(PC(i)/PCO(i))**gamma_INV(i)];

The error for equation 64 is however peculiar to only one of the commodities ( cext) out of the 10 commodities in my model. please can anyone help me fix this.
thanks for your help always


TAIWO ADEREMI
PHD CANDIDATE
UNIVERSITY OF IBADAN

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[Archiver]

Reply-to: gamsworld@googlegroups.com

Hi Renger,
Thanks for your suggestion. please how do I define the
variable as a positive one and give a lower bound of 0.0001. please I
would be glad if you can be explicit on this. Thanks

Taiwo


On 10/21/12, Renger van Nieuwkoop wrote:
> > Hi Taiwo
> > If you define the variable as positive and give a lower bound of 0.0001, you
> > will probably don't have this problem anymore.
> > Renger
> >
> > -----Ursprüngliche Nachricht-----
> > Von: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] Im
> > Auftrag von TAIWO ADEREMI
> > Gesendet: Saturday, October 20, 2012 6:54 PM
> > An: gamsworld
> > Betreff: Domain error(s) in nonlinear functions. Check bounds on variables.
> >
> > Hi all,
> > When I run my model I get this error - Domain error(s) in nonlinear
> > functions.
> > Check bounds on variables. when I click on the error it gives me
> >
> > ERRORS/WARNINGS IN EQUATION EQ64(cext)
> > 1 error(s): vcPower: FUNC DOMAIN: x**c, x >
> > **** ERRORS/WARNINGS IN EQUATION EQ87
> > 1 error(s): vcPower: FUNC DOMAIN: x**c, x >
> > EQ64(x).. EXD(x) =e= EXDO(x)*[e*PWX(x)/PE_fob(x)]**sigma_XD(x);
> > EQ87.. PIXINV =e= PROD[i$gamma_INV(i),(PC(i)/PCO(i))**gamma_INV(i)];
> >
> > The error for equation 64 is however peculiar to only one of the commodities
> > ( cext) out of the 10 commodities in my model. please can anyone help me fix
> > this.
> > thanks for your help always
> >
> >
> > TAIWO ADEREMI
> > PHD CANDIDATE
> > UNIVERSITY OF IBADAN
> >
> > --
> > "gamsworld" group.
> > To post to this group, send email to gamsworld@googlegroups.com.
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> >
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> > "gamsworld" group.
> > To post to this group, send email to gamsworld@googlegroups.com.
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> >
> >