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cycle do

  • September 26, 2019
  • 5 replies
  • 142 views
G
Dear all,
I want to create a cycle for-do and I want to have the values of the results for each considered point.
How can I write this in aimms?

For now I wrote this

for e| (epsilon_e(e))>epsilonl and (epsilon_e(e))
CO2_ec:=epsilon_e(e);
solve Min_Total_Costs;
Total_Costs_e(e):=Total_Costs;
endfor;

with e the index of a set epsilon_e, while Total_Costs_e(e) a variable.
I want to know the value of Total_Costs_e for each e. What is missing in the code?
Thanks
Best
GL

Best answer by Chris Kuip

The set that is the range of index e can be declared as follows (where p_NumberOfPoints controls the set size):
code:
  Parameter p_NumberOfPoints {
    InitialData: 3;
  }
  Set s_Events {
    SubsetOf: Integers;
    Index: e;
    Definition: ElementRange(1,p_NumberOfPoints);
  }
View original

    Chris Kuip
    AIMMSian
    Forum|alt.badge.img+7
    * Perhaps a typo: at the end of the first line (starting with for) I would expect the word "do".
    * Looking at your code, I expect the following identifiers to be declared as parameters:
    • epsilonl
    • epsilon_e
    • CO2_ec
    • Total_Costs_e
    * And I expect Total_Costs to be declared as a variable and this variable is solved in the mathematical program Min_Total_Costs.

    Also note that if epsilonl is strictly positive (as its name suggests) then the "and (epsilon_e(e))" part of the condition on the for loop is superfluous.
    G
    • graleo
    • Newcomer
    • September 26, 2019
    Dear @Chris Kuip ,
    thanks for your response. I tried and it still is not working. How can I define the set for index e and these parameters?
    Thanks.
    G
    • graleo
    • Newcomer
    • September 26, 2019
    Dear @Chris Kuip
    how can define the number of points for the defined range epsilon?
    Thanks
    Chris Kuip
    AIMMSian
    Forum|alt.badge.img+7
    The set that is the range of index e can be declared as follows (where p_NumberOfPoints controls the set size):
    code:
      Parameter p_NumberOfPoints {
        InitialData: 3;
      }
      Set s_Events {
        SubsetOf: Integers;
        Index: e;
        Definition: ElementRange(1,p_NumberOfPoints);
      }
    G
    • graleo
    • Newcomer
    • September 27, 2019
    dear @Chris Kuip
    thanks, it seems that I obtained some results for each considered point.
    Many tanks.
    Best
    GL

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