Variable Returns Empty

[Akshay Kelkar]

Hi,  in the following code, the variable Cd returns empty. Could I be please assisted in identifying the error? 

I have attached the model and data file here. 

Thank you. 

Akshay Kelkar

[Davi Doro]

Cd is empty because its indexing expression is such that there is no quintet (t, n, k, i, j) that satisfy the conditions you imposed.

If you take a look at the possible values for the quintet {t in tperiod, n in nDump, k in kDump[n], i in iDump[n], j in jDump[n]}, this is what you get:

1, W1, 3, 28, 17

1, W2, 3, 28, 18

1, W3, 3, 28, 19

1, W4, 3, 27, 17

1, W5, 3, 27, 18

1, W6, 3, 27, 19

1, W7, 3, 26, 17

1, W8, 3, 26, 18

1, W9, 3, 26, 19

1, W10, 4, 27, 18

1, W11, 3, 7, 11

2, W1, 3, 28, 17

2, W2, 3, 28, 18

2, W3, 3, 28, 19

2, W4, 3, 27, 17

2, W5, 3, 27, 18

2, W6, 3, 27, 19

2, W7, 3, 26, 17

2, W8, 3, 26, 18

2, W9, 3, 26, 19

2, W10, 4, 27, 18

2, W11, 3, 7, 11

3, W1, 3, 28, 17

3, W2, 3, 28, 18

3, W3, 3, 28, 19

3, W4, 3, 27, 17

3, W5, 3, 27, 18

3, W6, 3, 27, 19

3, W7, 3, 26, 17

3, W8, 3, 26, 18

3, W9, 3, 26, 19

3, W10, 4, 27, 18

3, W11, 3, 7, 11

But when you impose that (n,k,i,j) must be in mDump and (i-dl[n]) in iDump[n] and (i+dl[n]) in iDump[n] and (j-dl[n]) in jDump[n] and (j+dl[n]) in jDump[n] you won't get anything, because there is no quintet that satisfies that condition. In particular, you impose that i-1 and i+1 both need to be in iDump[n], when in fact iDump[n] only contains a single value for any n.

You can see my little test here:

https://pifop.com/app?view=ebwjN7PdL5tc25WCstmG&open=fcxkRzkMV9Rn4Da65yk1&open=fcxkwebBqFDybmgrud3d&open=fcxk0tEoRrIfrkNPSFBn&active=fcxk0tEoRrIfrkNPSFBn