BookmarkSubscribeRSS Feed
BjarneGjerde
Calcite | Level 5

How to get these example data from e.g. an Excel file (or ascii file):  

 

Var c1 c2

A     2    5

B     4    3

C     6    7

 

Into the vectors c1 and c2 in the below program.

Proc optmodel;

set box={"A","B","C"};

var Q{i in box} >=0;

 

number c1{i in box}=[2 4 6];

number c2{i in box}=[5 3 7];

 

etc. 

 

quit;

4 REPLIES 4
RobPratt
SAS Super FREQ

First convert to a SAS data set, say indata, by using PROC IMPORT or a DATA _null_ step.  Then use the READ DATA statement:

Proc optmodel;
   set <str> box;
   var Q{box} >=0;
   number c1{box};
   number c2{box};
   read data indata into box=[Var] c1 c2;
   print c1 c2;
quit;

PROC OPTMODEL questions will get more immediate response in the Mathematical Optimization, Discrete-Event Simulation, and OR community.

BjarneGjerde
Calcite | Level 5

Thanks a lot!

But I do  not see how to get each line or Product (Var A, B, C) – into e.g. c1 {i in box}.  

 

Proc optmodel;

set box={"A","B","C"};

var Q{i in box} >=0;

number c1{i in box}=[2 4 6];

number c2{i in box}=[5 3 7];

RobPratt
SAS Super FREQ

The READ DATA statement populates box, c1, and c2 for you.  That way, you can solve a different instance of the same problem just by changing data sets without having to change your PROC OPTMODEL code.

hackathon24-white-horiz.png

The 2025 SAS Hackathon has begun!

It's finally time to hack! Remember to visit the SAS Hacker's Hub regularly for news and updates.

Latest Updates

How to Concatenate Values

Learn how use the CAT functions in SAS to join values from multiple variables into a single value.

Find more tutorials on the SAS Users YouTube channel.

SAS Training: Just a Click Away

 Ready to level-up your skills? Choose your own adventure.

Browse our catalog!

Discussion stats
  • 4 replies
  • 1545 views
  • 0 likes
  • 3 in conversation