Hello Everyone,
I am currently working on Cplex using Python API. I have a problem when I run
the code. I keep getting this error about the invalid matrix input but I'm not
able to figure out what it is. I would be grateful if any of you could help. My
function is as below
def add_constraint(self, variables, coefficients, sense, rhs, name):
self.prob.linear_constraints.add(
lin_expr = [[ variables, coefficients ]],
senses = [sense],
rhs = [rhs],
names = [name] )
Traceback (most recent call last):
File "RW10.py", line 569, in <module>
main(sys.argv[1:])
File "RW10.py", line 562, in main
solveVNEProblem( phy_network, demands, args.output)
File "RW10.py", line 116, in solveVNEProblem
solver.add_constraint( varNames, varCoeffs, "E", 1.0,
"Location_Constraints1{}".format( demand.demandID ) )
File "RW10.py", line 26, in add_constraint
names = [name] )
File
"/opt/ibm/ILOG/CPLEX_Studio125/cplex/python/x86-64_sles10_4.1/cplex/_internal/_subinterfaces.py",
line 1187, in add
rmat = _C_HBMatrix(lin_expr, self._cplex._env_lp_ptr, 0,
self._env.parameters.read.apiencoding.get())
File
"/opt/ibm/ILOG/CPLEX_Studio125/cplex/python/x86-64_sles10_4.1/cplex/_internal/_matrices.py",
line 74, in __init__
raise TypeError(" invalid matrix input type -- ", self._mat[0])
TypeError: (' invalid matrix input type -- ', u'1')
Thank You
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