Extractin LP model from AMPL
I have a very big and complicated LP model in AMPL. I need to extract Ax<= b format from my LP (i.e), I need to extract all my data in form of matrix A, b, and all variables to be concatenate into a large vector x.
How can I do that?
linear-programming ampl
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
asked Nov 15 '18 at 4:14
Sajad Sajad
11
add a comment |
I have a very big and complicated LP model in AMPL. I need to extract Ax<= b format from my LP (i.e), I need to extract all my data in form of matrix A, b, and all variables to be concatenate into a large vector x.
How can I do that?
linear-programming ampl
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
asked Nov 15 '18 at 4:14
Sajad Sajad
11
add a comment |
I have a very big and complicated LP model in AMPL. I need to extract Ax<= b format from my LP (i.e), I need to extract all my data in form of matrix A, b, and all variables to be concatenate into a large vector x.
How can I do that?
linear-programming ampl
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
asked Nov 15 '18 at 4:14
Sajad Sajad
11
I have a very big and complicated LP model in AMPL. I need to extract Ax<= b format from my LP (i.e), I need to extract all my data in form of matrix A, b, and all variables to be concatenate into a large vector x.
How can I do that?
linear-programming ampl
linear-programming ampl
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
asked Nov 15 '18 at 4:14
Sajad Sajad
11
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
asked Nov 15 '18 at 4:14
Sajad Sajad
11
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
edited Nov 15 '18 at 7:15
Usman Maqbool
2,18662032
2,18662032
asked Nov 15 '18 at 4:14
Sajad Sajad
11
asked Nov 15 '18 at 4:14
Sajad Sajad
11
asked Nov 15 '18 at 4:14
Sajad Sajad
11
11
add a comment |
add a comment |
1 Answer
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In case you are familiar with coding for example in Java you could use an open source library/solver called GLPK.
In there you can read your .mod file and extract your data from the A and b Matrix. I am sure that the commercial software such as CPLEX/ Gurobi can also do that (also academic license available). Here you can find the user guide for GLPK: http://www.chiark.greenend.org.uk/doc/glpk-doc/glpk.pdf
Look for the following:
- glp get mat row — retrieve row of the constraint matrix
perhaps this could help.
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
add a comment |
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1 Answer
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active
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
In case you are familiar with coding for example in Java you could use an open source library/solver called GLPK.
In there you can read your .mod file and extract your data from the A and b Matrix. I am sure that the commercial software such as CPLEX/ Gurobi can also do that (also academic license available). Here you can find the user guide for GLPK: http://www.chiark.greenend.org.uk/doc/glpk-doc/glpk.pdf
Look for the following:
- glp get mat row — retrieve row of the constraint matrix
perhaps this could help.
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
add a comment |
In case you are familiar with coding for example in Java you could use an open source library/solver called GLPK.
In there you can read your .mod file and extract your data from the A and b Matrix. I am sure that the commercial software such as CPLEX/ Gurobi can also do that (also academic license available). Here you can find the user guide for GLPK: http://www.chiark.greenend.org.uk/doc/glpk-doc/glpk.pdf
Look for the following:
- glp get mat row — retrieve row of the constraint matrix
perhaps this could help.
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
add a comment |
In case you are familiar with coding for example in Java you could use an open source library/solver called GLPK.
In there you can read your .mod file and extract your data from the A and b Matrix. I am sure that the commercial software such as CPLEX/ Gurobi can also do that (also academic license available). Here you can find the user guide for GLPK: http://www.chiark.greenend.org.uk/doc/glpk-doc/glpk.pdf
Look for the following:
- glp get mat row — retrieve row of the constraint matrix
perhaps this could help.
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
In case you are familiar with coding for example in Java you could use an open source library/solver called GLPK.
In there you can read your .mod file and extract your data from the A and b Matrix. I am sure that the commercial software such as CPLEX/ Gurobi can also do that (also academic license available). Here you can find the user guide for GLPK: http://www.chiark.greenend.org.uk/doc/glpk-doc/glpk.pdf
Look for the following:
- glp get mat row — retrieve row of the constraint matrix
perhaps this could help.
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
answered Nov 29 '18 at 12:44
GeorgiosGeorgios
518
518
add a comment |
add a comment |
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