## \$149 message error

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### \$149 message error

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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Posts: 7876
Joined: 1 year ago

### Re: \$149 message error

Hello
1-Can you please clarify the definition of set n? Is that alias (t,n) ?
2-Also how exactly do you define RCON? Is that RCON(n), RCON(t) or RCON?

If you can provide the above information , it will be easier to discuss.
I hope it will help.
Regards
-----
Ù…Ø­Ù…Ø¯ ØµØ§Ø¯Ù‚ ØªÙˆÙ„Ù‘Ù„ÛŒ
National University of Singapore

On Sat, Oct 15, 2011 at 7:38 PM, alice wrote:

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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### Re: \$149 message error

no. the alias is (n, h).

where n is months and h quantities.It is RCON(n).

2011/10/17, Tavallali :
> > Hello
> > 1-Can you please clarify the definition of set n? Is that alias (t,n) ?
> > 2-Also how exactly do you define RCON? Is that RCON(n), RCON(t) or RCON?
> >
> > If you can provide the above information , it will be easier to discuss.
> > I hope it will help.
> > Regards
> > -----
> > Ù…Ø­Ù…Ø¯ ØµØ§Ø¯Ù‚ ØªÙˆÙ„Ù‘Ù„ÛŒ
> > National University of Singapore
> >
> >
> >
> > On Sat, Oct 15, 2011 at 7:38 PM, alice wrote:
> >
>> >> hi.
>> >>
>> >> i am a new user in gams, so any help would be grateful!!!
>> >>
>> >> i have created a set where time /t1*t40/
>> >> types /inputs, outputs /
>> >>
>> >> Alias (time, t)
>> >> (types, j);
>> >>
>> >> and created a table where prices(t, j) are depicted. By pressing F9
>> >> status is normal completion.
>> >>
>> >> The problem i am facing is the below:
>> >> i have placed the variables c(j), p (j) also named the equation as
>> >> RCon but by writting down the equation
>> >>
>> >> R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
>> >> \$149 error message is appeared.
>> >>
>> >> Any idea?
>> >>
>> >>
>> >> Alice.
>> >>
>> >> --
>> >> "gamsworld" group.
>> >> To post to this group, send email to gamsworld@googlegroups.com.
>> >> To unsubscribe from this group, send email to
>> >> For more options, visit this group at
>> >>
>> >>
> >
> > --
> > "gamsworld" group.
> > To post to this group, send email to gamsworld@googlegroups.com.
> > To unsubscribe from this group, send email to
> > For more options, visit this group at
> >
> >

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Posts: 7876
Joined: 1 year ago

### Re: \$149 message error

Hello Alice,

First, I don't think it is right to use alias for different sets like for month and quantity. (Read on the use of alias)
Second, according to the equation, both RCON and R should be defined over t.

RCON (t).. R(t) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j));

Hope this helps!

Good luck

On Mon, Oct 17, 2011 at 4:20 PM, lilly lilly23 wrote:

no. the alias is (n, h).

where n is months and h quantities.It is RCON(n).

2011/10/17, Tavallali :
> Hello
> 1-Can you please clarify the definition of set n? Is that alias (t,n) ?
> 2-Also how exactly do you define RCON? Is that RCON(n), RCON(t) or RCON?
>
> If you can provide the above information , it will be easier to discuss.
> I hope it will help.
> Regards
> -----
> Ù…Ø­Ù…Ø¯ ØµØ§Ø¯Ù‚ ØªÙˆÙ„Ù‘Ù„ÛŒ
> National University of Singapore
>
>
>
> On Sat, Oct 15, 2011 at 7:38 PM, alice wrote:
>
>> hi.
>>
>> i am a new user in gams, so any help would be grateful!!!
>>
>> i have created a set where time /t1*t40/
>> types /inputs, outputs /
>>
>> Alias (time, t)
>> (types, j);
>>
>> and created a table where prices(t, j) are depicted. By pressing F9
>> status is normal completion.
>>
>> The problem i am facing is the below:
>> i have placed the variables c(j), p (j) also named the equation as
>> RCon but by writting down the equation
>>
>> R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
>> \$149 error message is appeared.
>>
>> Any idea?
>>
>>
>> Alice.
>>
>> --
>> "gamsworld" group.
>> To post to this group, send email to gamsworld@googlegroups.com.
>> To unsubscribe from this group, send email to
>> For more options, visit this group at
>>
>>
>
> --
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> For more options, visit this group at
>
>

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### Re: \$149 message error

i use 2 different include files.
on the first one i use the alias
(months, n)
(quantities, h);

and on the second one (time, t)
(types, j);

i have created 2 tables: production (n, h) and exportreturns (t, j)

i need both n and t to be included in my equation R(n).

is it possible?

Alice.

On 17 ÎŸÎºÏ„, 17:57, Muhajir wrote:
> > Hello Alice,
> >
> > First, I don't think it is right to use alias for different sets like for
> > month and quantity. (Read on the use of alias)
> > Second, according to the equation, both RCON and R should be defined over t.
> >
> > RCON (t).. R(t) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t,
> > j));
> >
> > Hope this helps!
> >
> > Good luck
> >
> >
> >
> >
> >
> >
> >
> > On Mon, Oct 17, 2011 at 4:20 PM, lilly lilly23 wrote:
>> > > no. the alias is (n, h).
> >
>> > > where n is months and h quantities.It is RCON(n).
> >
>> > > 2011/10/17, Tavallali :
>>> > > > Hello
>>> > > > 1-Can you please clarify the definition of set n? Is that alias (t,n) ?
>>> > > > 2-Also how exactly do you define RCON? Is that RCON(n), RCON(t) or RCON?
> >
>>> > > > If you can provide the above information , it will be easier to discuss.
>>> > > > I hope it will help.
>>> > > > Regards
>>> > > > -----
>>> > > > Ù…Ø­Ù…Ø¯ ØµØ§Ø¯Ù‚ ØªÙˆÙ„Ù‘Ù„ÛŒ
>>> > > > National University of Singapore
> >
>>> > > > On Sat, Oct 15, 2011 at 7:38 PM, alice wrote:
> >
>>>> > > >> hi.
> >
>>>> > > >> i am a new user in gams, so any help would be grateful!!!
> >
>>>> > > >> i have created a set where time /t1*t40/
>>>> > > >> types /inputs, outputs /
> >
>>>> > > >> Alias (time, t)
>>>> > > >> (types, j);
> >
>>>> > > >> and created a table where prices(t, j) are depicted. By pressing F9
>>>> > > >> status is normal completion.
> >
>>>> > > >> The problem i am facing is the below:
>>>> > > >> i have placed the variables c(j), p (j) also named the equation as
>>>> > > >> RCon but by writting down the equation
> >
>>>> > > >> R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
>>>> > > >> \$149 error message is appeared.
> >
>>>> > > >> Any idea?
> >
>>>> > > >> Thanks in advance,
> >
>>>> > > >> Alice.
> >
>>>> > > >> --
>>>> > > >> You received this message because you are subscribed to the Google
>> > > Groups
>>>> > > >> "gamsworld" group.
>>>> > > >> To post to this group, send email to gamsworld@googlegroups.com.
>>>> > > >> To unsubscribe from this group, send email to
>>>> > > >> For more options, visit this group at
> >
>>> > > > --
>>> > > > "gamsworld" group.
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>>> > > > To unsubscribe from this group, send email to
>>> > > > For more options, visit this group at
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### Re: \$149 message error

Hi

I also need help PLSSSSS

I have equilibrium model such that

h= 7 days and I want equilibrium for each day seperatelly given the firms
f=4 firms

h=1,2,3,4,5,6,7
f=f1,f2,f3,f4

I define demand function as demand(h)=a+bP
I define supply function for each firm as supply(h)=c+dP

Therefore, I define a and b demand parameters for each day. Also,c and d are cost parameters for each firm!

At the equilibrium D=S

equations
demand
supply;

demand..q =g=c(h) + d(h)*p(h)=;
supply.. a(i) + b(i)*q(i)=g=p(h);

model equilibrium /supply.q, demand.p/;

solve equilibrium using mcp;

i want to find both equilibrium price and quantities. I want to see that may be 2 firms will sell in the market because they charge lower than other firms.

I have the same problem, it says for each parameter I define above, demand and supply - uncontrolled set entered as constant: 149.

hope you can help me.

thanks

On Saturday, October 15, 2011 11:38:31 AM UTC, alice wrote:

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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Posts: 7876
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### AW: \$149 message error

Hi Sener

Take a good look at your equations: you define demand as a single equation, but in the equation itself, you have the set h as index but on the left hand side you have q without an index.

demand..q =g=c(h) + d(h)*p(h);

so GAMS gets confused:

This would work better

Equation demand;

Demand..q=g=sum(h, c(h) + d(h)*p(h));

Or:

Equation demand(h);

Demand(h)..q(h) =g=c(h) + d(h)*p(h);

Cheers

____________________

Modelworks

Gewerbestrasse 15

3600 Thun â€“ Switzerland

+41 79 818 53 73

Info@modelworks.ch

blog.modelworks.ch

Gesendet: Mittwoch, 21. November 2012 06:49
Betreff: Re: \$149 message error

Hi

I also need help PLSSSSS

I have equilibrium model such that

h= 7 days and I want equilibrium for each day seperatelly given the firms

f=4 firms

h=1,2,3,4,5,6,7

f=f1,f2,f3,f4

I define demand function as demand(h)=a+bP

I define supply function for each firm as supply(h)=c+dP

Therefore, I define a and b demand parameters for each day. Also,c and d are cost parameters for each firm!

At the equilibrium D=S

equations

demand

supply;

demand..q =g=c(h) + d(h)*p(h)=;

supply.. a(i) + b(i)*q(i)=g=p(h);

model equilibrium /supply.q, demand.p/;

solve equilibrium using mcp;

i want to find both equilibrium price and quantities. I want to see that may be 2 firms will sell in the market because they charge lower than other firms.

I have the same problem, it says for each parameter I define above, demand and supply - uncontrolled set entered as constant: 149.

hope you can help me.

thanks

On Saturday, October 15, 2011 11:38:31 AM UTC, alice wrote:

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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### Re: \$149 message error

Hi Renger,

I have tried your solution, for the same error 'uncontrolled set entered as constant'. But it has not worked for me, yet.

What am I missing?? Please enlighten, asap.

Below is my code -
sets
j number of month / jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec /
i number of month / j, f, m, ap, my, ju, jl, au, s, o, n, d /
;

integer variables
x(j) number of CP32A units assembled in month j
y(j) inventory of CP32A at the end of month j
;
variable z;

Parameters
cap(i) historical CP32A assembly capacity in month j
/j 6
f 1
m 1
ap 3
my 26
ju 17
jl 36
au 20
s 5
o 16
n 21
d 2/
d(j) forecast of CP32A in month j
/jan 17
feb 17
mar 16
apr 16
may 15
jun 18
jul 17
aug 16
sep 15
oct 17
nov 15
dec 15/

equations obj,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10;
obj.. 0 =e= -z + 46164.5*(Sum(j,x(j))) + 100*(Sum(j,y(j)));
c1.. Sum(j,(x(j)-d(j))) =g= 0;
c2.. 200*(Sum(j,x(j))) =l= 2400;
c3.. Sum(j,x(j)) =l= cap(i);

Thanks,
Kiran

On Wednesday, November 21, 2012 at 2:46:44 PM UTC+5:30, Renger van Nieuwkoop wrote:

Hi Sener

Take a good look at your equations: you define demand as a single equation, but in the equation itself, you have the set h as index but on the left hand side you have q without an index.

demand..q =g=c(h) + d(h)*p(h);

so GAMS gets confused:

This would work better

Equation demand;

Demand..q=g=sum(h, c(h) + d(h)*p(h));

Or:

Equation demand(h);

Demand(h)..q(h) =g=c(h) + d(h)*p(h);

Cheers

____________________

Modelworks

Gewerbestrasse 15

3600 Thun â€“ Switzerland

+41 79 818 53 73

In...@modelworks.ch

blog.modelworks.ch

Gesendet: Mittwoch, 21. November 2012 06:49
Betreff: Re: \$149 message error

Hi

I also need help PLSSSSS

I have equilibrium model such that

h= 7 days and I want equilibrium for each day seperatelly given the firms

f=4 firms

h=1,2,3,4,5,6,7

f=f1,f2,f3,f4

I define demand function as demand(h)=a+bP

I define supply function for each firm as supply(h)=c+dP

Therefore, I define a and b demand parameters for each day. Also,c and d are cost parameters for each firm!

At the equilibrium D=S

equations

demand

supply;

demand..q =g=c(h) + d(h)*p(h)=;

supply.. a(i) + b(i)*q(i)=g=p(h);

model equilibrium /supply.q, demand.p/;

solve equilibrium using mcp;

i want to find both equilibrium price and quantities. I want to see that may be 2 firms will sell in the market because they charge lower than other firms.

I have the same problem, it says for each parameter I define above, demand and supply - uncontrolled set entered as constant: 149.

hope you can help me.

thanks

On Saturday, October 15, 2011 11:38:31 AM UTC, alice wrote:

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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Joined: 1 year ago

### RE: \$149 message error

Hi

In this equation

c3.. Sum(j,x(j)) =l= cap(i);

you have cap(i) on the right-hand side, but you donâ€™t reference i:

This would work: C3(i).. Sum(j,x(j)) =l= cap(i);

But this doesnâ€™t make much sense: total assembled in one year is in each month less than the monthly capacity. You are probably looking for something like c3(j).. x(j) =l= cap(j)

Some other hint: It is better to define the months as one set i, and alias it with j and define x,cap, and d over i.

Cheers

Renger

Sent: Mittwoch, 30. MÃ¤rz 2016 21:56
To: gamsworld
Subject: Re: \$149 message error

Hi Renger,

I have tried your solution, for the same error 'uncontrolled set entered as constant'. But it has not worked for me, yet.

What am I missing?? Please enlighten, asap.

Below is my code -

sets

j number of month / jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec /

i number of month / j, f, m, ap, my, ju, jl, au, s, o, n, d /

;

integer variables

x(j) number of CP32A units assembled in month j

y(j) inventory of CP32A at the end of month j

;

variable z;

Parameters

cap(i) historical CP32A assembly capacity in month j

/j 6

f 1

m 1

ap 3

my 26

ju 17

jl 36

au 20

s 5

o 16

n 21

d 2/

d(j) forecast of CP32A in month j

/jan 17

feb 17

mar 16

apr 16

may 15

jun 18

jul 17

aug 16

sep 15

oct 17

nov 15

dec 15/

equations obj,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10;

obj.. 0 =e= -z + 46164.5*(Sum(j,x(j))) + 100*(Sum(j,y(j)));

c1.. Sum(j,(x(j)-d(j))) =g= 0;

c2.. 200*(Sum(j,x(j))) =l= 2400;

c3.. Sum(j,x(j)) =l= cap(i);

Thanks,

Kiran

On Wednesday, November 21, 2012 at 2:46:44 PM UTC+5:30, Renger van Nieuwkoop wrote:

Hi Sener

Take a good look at your equations: you define demand as a single equation, but in the equation itself, you have the set h as index but on the left hand side you have q without an index.

demand..q =g=c(h) + d(h)*p(h);

so GAMS gets confused:

This would work better

Equation demand;

Demand..q=g=sum(h, c(h) + d(h)*p(h));

Or:

Equation demand(h);

Demand(h)..q(h) =g=c(h) + d(h)*p(h);

Cheers

____________________

Modelworks

Gewerbestrasse 15

3600 Thun â€“ Switzerland

+41 79 818 53 73

In...@modelworks.ch

blog.modelworks.ch

Gesendet: Mittwoch, 21. November 2012 06:49
Betreff: Re: \$149 message error

Hi

I also need help PLSSSSS

I have equilibrium model such that

h= 7 days and I want equilibrium for each day seperatelly given the firms

f=4 firms

h=1,2,3,4,5,6,7

f=f1,f2,f3,f4

I define demand function as demand(h)=a+bP

I define supply function for each firm as supply(h)=c+dP

Therefore, I define a and b demand parameters for each day. Also,c and d are cost parameters for each firm!

At the equilibrium D=S

equations

demand

supply;

demand..q =g=c(h) + d(h)*p(h)=;

supply.. a(i) + b(i)*q(i)=g=p(h);

model equilibrium /supply.q, demand.p/;

solve equilibrium using mcp;

i want to find both equilibrium price and quantities. I want to see that may be 2 firms will sell in the market because they charge lower than other firms.

I have the same problem, it says for each parameter I define above, demand and supply - uncontrolled set entered as constant: 149.

hope you can help me.

thanks

On Saturday, October 15, 2011 11:38:31 AM UTC, alice wrote:

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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### Re: \$149 message error

Hi Renger,

That has worked. Thanks!

However, even though I have no errors, resulting in normal compilation, my model is turning in-feasible because of row 'c1'.

Below is my code -
sets
j number of month / jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec /
;

variables
x(j) number of CP32A units assembled in month j
y(j) inventory of CP32A at the end of month j
;

Positive Variables x, y

variable z;

Parameters
cap(j) historical CP32A assembly capacity in period i
/jan 6
feb 1
mar 1
apr 3
may 26
jun 17
jul 36
aug 20
sep 5
oct 16
nov 21
dec 2/

d(j) forecast of CP32A in month j
/jan 17
feb 17
mar 16
apr 16
may 15
jun 18
jul 17
aug 16
sep 15
oct 17
nov 15
dec 15/

equations obj,c1,c2,c3;
obj.. 0 =e= -z + 46164.5*(Sum(j,x(j))) + 100*(Sum(j,y(j)));
c1(j).. y(j-1) - y(j) + x(j) =e= d(j);
c2.. 200*(Sum(j,x(j))) =l= 2400;
c3(j).. x(j) =l= cap(j);
model CP32A /all/ ;
solve CP32A using lp minimizing z ;

Logically, I want -
Beginning inventory - Ending inventory + Production amount = Demand

What am I missing?
How exactly can I use 'alias'?

Thanks again,
Kiran.

Kiran Patil
Assistant Professor
Department of Mechanical Engineering
Sandip Institute of Engineering & Management
Nasik, MH, India
Cell: +91-9

Kiran Patil
Assistant Professor
Department of Mechanical Engineering
Sandip Institute of Engineering & Management
Nasik, MH, India
Cell: +91-9405128669

On Thu, Mar 31, 2016 at 1:42 PM, Renger van Nieuwkoop wrote:

Hi

In this equation

c3.. Sum(j,x(j)) =l= cap(i);

you have cap(i) on the right-hand side, but you donâ€™t reference i:

This would work: C3(i).. Sum(j,x(j)) =l= cap(i);

But this doesnâ€™t make much sense: total assembled in one year is in each month less than the monthly capacity. You are probably looking for something like c3(j).. x(j) =l= cap(j)

Some other hint: It is better to define the months as one set i, and alias it with j and define x,cap, and d over i.

Cheers

Renger

Sent: Mittwoch, 30. MÃ¤rz 2016 21:56
To: gamsworld
Subject: Re: \$149 message error

Hi Renger,

I have tried your solution, for the same error 'uncontrolled set entered as constant'. But it has not worked for me, yet.

What am I missing?? Please enlighten, asap.

Below is my code -

sets

j number of month / jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec /

i number of month / j, f, m, ap, my, ju, jl, au, s, o, n, d /

;

integer variables

x(j) number of CP32A units assembled in month j

y(j) inventory of CP32A at the end of month j

;

variable z;

Parameters

cap(i) historical CP32A assembly capacity in month j

/j 6

f 1

m 1

ap 3

my 26

ju 17

jl 36

au 20

s 5

o 16

n 21

d 2/

d(j) forecast of CP32A in month j

/jan 17

feb 17

mar 16

apr 16

may 15

jun 18

jul 17

aug 16

sep 15

oct 17

nov 15

dec 15/

equations obj,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10;

obj.. 0 =e= -z + 46164.5*(Sum(j,x(j))) + 100*(Sum(j,y(j)));

c1.. Sum(j,(x(j)-d(j))) =g= 0;

c2.. 200*(Sum(j,x(j))) =l= 2400;

c3.. Sum(j,x(j)) =l= cap(i);

Thanks,

Kiran

On Wednesday, November 21, 2012 at 2:46:44 PM UTC+5:30, Renger van Nieuwkoop wrote:

Hi Sener

Take a good look at your equations: you define demand as a single equation, but in the equation itself, you have the set h as index but on the left hand side you have q without an index.

demand..q =g=c(h) + d(h)*p(h);

so GAMS gets confused:

This would work better

Equation demand;

Demand..q=g=sum(h, c(h) + d(h)*p(h));

Or:

Equation demand(h);

Demand(h)..q(h) =g=c(h) + d(h)*p(h);

Cheers

____________________

Modelworks

Gewerbestrasse 15

3600 Thun â€“ Switzerland

+41 79 818 53 73

In...@modelworks.ch

blog.modelworks.ch

Gesendet: Mittwoch, 21. November 2012 06:49
Betreff: Re: \$149 message error

Hi

I also need help PLSSSSS

I have equilibrium model such that

h= 7 days and I want equilibrium for each day seperatelly given the firms

f=4 firms

h=1,2,3,4,5,6,7

f=f1,f2,f3,f4

I define demand function as demand(h)=a+bP

I define supply function for each firm as supply(h)=c+dP

Therefore, I define a and b demand parameters for each day. Also,c and d are cost parameters for each firm!

At the equilibrium D=S

equations

demand

supply;

demand..q =g=c(h) + d(h)*p(h)=;

supply.. a(i) + b(i)*q(i)=g=p(h);

model equilibrium /supply.q, demand.p/;

solve equilibrium using mcp;

i want to find both equilibrium price and quantities. I want to see that may be 2 firms will sell in the market because they charge lower than other firms.

I have the same problem, it says for each parameter I define above, demand and supply - uncontrolled set entered as constant: 149.

hope you can help me.

thanks

On Saturday, October 15, 2011 11:38:31 AM UTC, alice wrote:

hi.

i am a new user in gams, so any help would be grateful!!!

i have created a set where time /t1*t40/
types /inputs, outputs /

Alias (time, t)
(types, j);

and created a table where prices(t, j) are depicted. By pressing F9
status is normal completion.

The problem i am facing is the below:
i have placed the variables c(j), p (j) also named the equation as
RCon but by writting down the equation

R(n) =E= sum(j, c(j)*prices(t, j)) + sum (j, p(j)*prices(t, j)) the
\$149 error message is appeared.

Any idea?

Alice.

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