Hi Renger,
I've tried your suggested code, but it's still the same. 25th value is assigned to zero.
Cheers,
Damaskinos
Search found 8 matches
- 3 years ago
- Forum: Syntax
- Topic: Enter cyclic parameters
- Replies: 9
- Views: 4943
- 3 years ago
- Forum: Syntax
- Topic: Enter cyclic parameters
- Replies: 9
- Views: 4943
Re: Enter cyclic parameters
Hi Renger, I had to left this project for a while, so sorry for not replying. It's almost what I am looking for, but there is problem with the right index definition. Using your code, I get 24th value equal to zero, hence if I want to use this way for parameter definiton, as the value is zero, I can...
- 3 years ago
- Forum: Syntax
- Topic: Enter cyclic parameters
- Replies: 9
- Views: 4943
Re: Enter cyclic parameters
Hi, of course. Let's say, I have hourly data of consumption for 54 hours (like 2.25 days), hence set i / 1*55/ (including consumption from 0.00 to 1.00); and hourly data of production for 24 hours only, hence probably ii(i) /1*25/. What I need is to extend production data to have the same length as ...
- 3 years ago
- Forum: Syntax
- Topic: Entering some of the values of a variable table
- Replies: 2
- Views: 2119
Re: Entering some of the values of a variable table
Hi, if you want to define let's say three dimensional parameter you can do it as in the following example: Set i /s, n1, n2, t/ j /s, n1, n2, t/ k /1*2/; *or you can use Alias(i,j); if in your case they're the same sets like in my example Table c(i,j,k) s.1 n1.1 n2.1 t.1 s.2 n1.2 n2.2 t.2 s 0 5 1 0 ...
- 3 years ago
- Forum: Syntax
- Topic: Enter cyclic parameters
- Replies: 9
- Views: 4943
Re: Enter cyclic parameters
Hi Renger, first of all, thanks for your quick reply. It looks pretty accurate and works well. I'm glad you understood although my description was pretty weird. The question is following, is there any possibility to manage situation, when I have data, let's say for (n+1/2) of days? Because if I unde...
- 3 years ago
- Forum: Syntax
- Topic: Enter cyclic parameters
- Replies: 9
- Views: 4943
Enter cyclic parameters
Hi, I am modelling electricity consumption of a household during three month long period. Daily consumption is assumed to be the same every day. I import data from excel file, where the data are like c(1) - 0.2 (kWh), c(2) - 0.2 (kWh),..., c(24) - 0.1 (kWh). So I've currently imported a vector of 24...
- 3 years ago
- Forum: Syntax
- Topic: subtour elimination constraints VRP
- Replies: 1
- Views: 3019
Re: subtour elimination constraints VRP
Hi,
I am pretty not sure what d_i means, but I suggest u should start with look for
tsp2.gms in GAMS model library. Your equation looks quite similar as the subtour
elimination constraint in travelling salesman problem (TSP).
I am pretty not sure what d_i means, but I suggest u should start with look for
tsp2.gms in GAMS model library. Your equation looks quite similar as the subtour
elimination constraint in travelling salesman problem (TSP).
- 6 years ago
- Forum: Modeling
- Topic: Node-edge constraint
- Replies: 1
- Views: 2267
Node-edge constraint
Hi, Imagine the situation of this constraint, which can be formally written as follows: gamma(i,j) = gamma(i) for all i I and j represent nodes as usually. Gamma(i,j) is value of binary variable representing if edge is connected (=0) or disconnected (=1). The same for gamma(i) = 1, then node is disa...