[Help-glpk] API question

[Rafa Marin Lopez]

Dear all,

I am a newbie in this tool and I would like to ask a simple doubt.

I have seen (and tested) that the example sample.c it is not possible to 
set a coefficient to zero at the table ar[x]=0.0

This is also highlighted on the documentation.

But I was wondering how I could express a restriction like this

R >= x1+x2+x3
x1 <= g1
x2 <= g2
x3 <= g3

i have expressed the problem like

r = x1+x2+x3    (1)
x1 = p          (2)
x2 = q          (3)
x3 = 3          (4)

However it implies, for example in the second equation, that x2 and x3 
coefficient are zero.

By using files (i.e. format cplexlp) is easy to express these 
restrictions but I would be interested in using the API C.

Thanks in advance.

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Rafael Marin Lopez
Depto. Ing. de la Info. y las Comunicaciones
Faculty of Computer Science-University of Murcia
30100 Murcia - Spain
Telf: +34968398501    e-mail: address@hidden
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