using variables in conditionals

GAMS
1

Hi every body


I have problem in writing this constraint

if((x(i,k,m,l))=g=x(j,kp,m,l)),q(i,j,k,kp,m,l)=e=0;else q(i,j,k,kp,m,l)=e=1

where x is variable how i can code this in gams as i know that conditionals cant be used for variables, if thre is a way for writing this constraint

if any one could help me it would be aprriciated

thank you

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2

Hi Razie,
You should use a bigM and binary variable. Please refer to disjunctive model.
Omid,

On Tuesday, December 22, 2015 at 3:35:04 PM UTC-6, razie wrote:

Hi every body


I have problem in writing this constraint

if((x(i,k,m,l))=g=x(j,kp,m,l)),q(i,j,k,kp,m,l)=e=0;else q(i,j,k,kp,m,l)=e=1

where x is variable how i can code this in gams as i know that conditionals cant be used for variables, if thre is a way for writing this constraint

if any one could help me it would be aprriciated

thank you

–
To unsubscribe from this group and stop receiving emails from it, send an email to gamsworld+unsubscribe@googlegroups.com.
To post to this group, send email to gamsworld@googlegroups.com.
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3

Hi Omid
. thank you for your answering , but I didnt understand well what you mean, pleas explain more if you can

thanks

در دوشنبه 28 دسامبر 2015، ساعت 18:30:11 (UTC+3:30)، omid ziaee نوشته:

Hi Razie,
You should use a bigM and binary variable. Please refer to disjunctive model.
Omid,

On Tuesday, December 22, 2015 at 3:35:04 PM UTC-6, razie wrote:

Hi every body


I have problem in writing this constraint

if((x(i,k,m,l))=g=x(j,kp,m,l)),q(i,j,k,kp,m,l)=e=0;else q(i,j,k,kp,m,l)=e=1

where x is variable how i can code this in gams as i know that conditionals cant be used for variables, if thre is a way for writing this constraint

if any one could help me it would be aprriciated

thank you

–
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For more options, visit https://groups.google.com/d/optout.