Originally posted by: khadeejah

one of my input parameters is Axyz , where x,y, t are index sets.  ; where Axyz  unit is $/meter square/week

In the mod. file, x and y are string and t (which is periods) is int.

{string} Xprod = ...;
{string} Ystages = ...;

int   Nbperiods = ...;
range periods   = 1..Nbperiods;

Any suggestions?

Originally posted by: SebastianFink

Hi,

according to the doc at

http://www.ibm.com/support/knowledgecenter/SSSA5P_12.5.0/ilog.odms.ide.help/OPL_Studio/opllangref/topics/opl_langref_datastructures_arrays.html

and

http://www.ibm.com/support/knowledgecenter/SSSA5P_12.5.0/ilog.odms.ide.help/OPL_Studio/opllangref/topics/opl_langref_data_init_arrays.html

you can define

int a[Xprod][yStages][periods] = ...; 

in your model and something like

a = [

[ [ 1, 2, 3], [4, 5, 6]],

[ [ 5, 3, 2], [4, 3, 8]]

];

in your .dat file. This variant is without indexing. You can also use the indexed declaration described in the second link, remember to change the outer brackets from "["/"]" to "#["/"]#" and use "key : value" syntax.

Originally posted by: khadeejah

If IF A[x][y][z] & x=1...2, y=1.....6, z=1.....12
How to write this in the data file??

in the mod file its, 

float  Axyz   [prod][stages][periods]= ...;

still i'm not clear about how to do its .dat file!!

Originally posted by: SebastianFink

I'm not sure I understand your question, but you can write

 Axyz = [

[[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],

... , // 6 rows in total (because the second index y=1..6)

 [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]]

];

in your .dat file to initialize the array.

Originally posted by: khadeejah

I mean that X, y, and Z are sets , each one includes the number of elements i mentioned. 

x includes two elements , y includes 6 elements, z includes 12 elements.

what you wrote now is only for Y and Z , what about X. 

Did you get my point?

Originally posted by: SebastianFink

Sorry, my mistake. I lost part of the initialization when copying. Also, I've highlighted the brackets for the additional dimension in blue - I hope it's clearer now

 Axyz = [

[[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],

... , // 6 rows in total (because the second index y=1..6)

 [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]],

[[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],

... , // 6 rows for the second index in x

 [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]]

];

 

Originally posted by: khadeejah

in the same context of the previous question, IC_ist= A_xyz

IC_ist :is the  inventory cost for product i in stage s by the end of period t. its value for i=1 differs than that for i=2 , but for the same i,  IC_ist  is the same per stage and period.

IC_ist, for i=1....> equals to 0.125. and for i=2...> equals to 0.375, so i place it in the data file as shown:

ICist= [[0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125]],
        
       [[0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375]];

what i did is that i repeated the value for the 24 periods for the six stages for the same product, 

And when i ran the model it gave that error:

Data item "0.125" unexpected for "float [ ][stages][periods]".

ANY suggestions, or what i'm doing wrong that created such an error!

Hi,

can you attach your .mod And .dat ?

regards

Originally posted by: khadeejah

sorry for the stupid question: how can i attach it directly from the workspace!

Hi,

simply use "attach a file " with the .mod And .dat that are in the right run configuration.

Or zip the full directory And then attach.

regards

Originally posted by: khadeejah

I thought there' s adirect way of attachment, i copy and pasted them into two word documents, and here they are attached.

Thanks

Hi,

let me address and fix ICist:

This is a 3D array so you should start with [[[ in the .dat!

ICist=[

[[0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125],
        [0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125,0.125]],
 ,       
       [[0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375],
        [0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375,0.375]]
        ];

regards

Originally posted by: khadeejah

Thanks alot, 

Why when i made the following run, i had this error for :

alphaif= [[3,2.8,0,0],
         [3,2.8,0,0]];

 invalid array size expecting 2!!

however its written for two i (2 products) and 4 columns (4 fabric elements). so why its wrong!!

Originally posted by: khadeejah

i removed the second bracket , and then i had this error :

Data item 3 unexpected for float [fabric][MTo][periods]!

Hi,

alphaif= [[3,2]
         [2.8,2]];

would work better

regards