RE: Need Help For Domain Violation for Set Error
Renger van Nieuwkoop
Hi
The problem is that i and j are different sets although they have the same elements.
You could change this in
SET i /1*5/;
Alias(i,j);
In this case you can write a(i,j) * a(j,i) and it will do what you want.
Another way would be to define a as a(*,*), this means that there will be no domain checking of the sets, which is in general not a good idea. In this case you can keep the two different sets and the code will not produce an error.
However, if you do not allow domain checking, things can go wrong. For example, if you want to assign parameter a for the combination i=1 and j=1, by writing for example a(“1”,”1”) = 1; but you misspell the 1 and write instead a(“a1”,”1”) = 1; there will be now an additional value for a(“a1”,”1”) and a(“1”,”1”) will be unchanged. With domain checking, Gams would produce an error. Try it out.
Hope this helps
Cheers
Renger
From: gams...@googlegroups.com [mailto:gams...@googlegroups.com]
On Behalf Of Ata Çirak
Sent: Wednesday, October 29, 2014 2:52 PM
To: gams...@googlegroups.com
Subject: Need Help For Domain Violation for Set Error
1 SETS
2 i nakit ihtiyaci kuru /1*5/
3 j karsilanacak kur /1*5/;
4
5 TABLE
6 a(i,j) doviz kuru
7 1 2 3 4 5
8 1 1.00000 0.69980 8.07800 2.62700 224.700
9 2 1.42500 1.00000 11.55000 3.75400 320.700
10 3 0.12340 0.08647 1.00000 0.32500 27.760
11 4 0.37930 0.26620 3.07300 1.00000 85.510
12 5 0.00443 0.00310 0.03586 0.01163 1.00000;
13
14 PARAMETER c(i,j) komisyon;
15 c(i,j)= 1 - a(i,j) * a(j,i);
**** $171,171
16 POSITIVE VARIABLES
17 x(i,j);
18 VARIABLES
19 z;
20 EQUATIONS
21 frankKisidi Karsilanmasi gereken Frank miktari
22 yenKisidi Karsilanmasi gereken Yen miktari
23 dolarKisidi eldeki dolar fazlasi kisidi
24 poundKisidi eldeki pound fazlasi kisidi
25 markKisidi eldeki mark fazlasi kisidi
26
27 amac komisyon maliyeti;
28
29
30 amac.. z =e= c('3','1')*x('3','1')+c('3','2')*x('3','2')+c('3','4')*x('
3','4')+c('5','1')*x('5','1')+c('5','2')*x('5','2')+c('5','4')*x('5','4');
31 frankKisidi.. a('1','3')*x('3','1')+a('2','3')*x('3','2')+a('4','3')*x(
'3','4') =g= 8;
32 yenKisidi.. a('1','5')*x('5','1')+a('2','5')*x('5','2')+a('4','5')*x(
'5','4') =g= 1280;
33 dolarKisidi.. x('3','1')+x('5','1') =l= 2;
34 poundKisidi.. x('3','2')+x('5','2') =l= 5;
35 markKisidi.. x('3','4')+x('5','4') =l= 3;
36
37 MODEL doviz /all/;
38 SOLVE doviz using lp min z;
**** $257
GAMS 24.3.3 r48116 Released Sep 19, 2014 WEX-WEI x86 64bit/MS Windows 10/29/14 15:27:51 Page 2
G e n e r a l A l g e b r a i c M o d e l i n g S y s t e m
Error Messages
171 Domain violation for set
257 Solve statement not checked because of previous errors
I have almost no experience. I get error on line 15. What is the way that multiply a(i,j) and a(j,i)?
Please help me :(
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Ata Çırak
29 Ekim 2014 Çarşamba 15:59:16 UTC+2 tarihinde Renger van Nieuwkoop yazdı: