def _add_var(self, var):
varname = self._symbol_map.getSymbol(var, self._labeler)
vartype = self._xpress_vartype_from_var(var)
if var.has_lb():
lb = value(var.lb)
else:
lb = -self._xpress.infinity
if var.has_ub():
ub = value(var.ub)
else:
ub = self._xpress.infinity
if var.is_fixed():
lb = value(var.value)
ub = value(var.value)
xpress_var = self._xpress.var(name=varname,
lb=lb,
ub=ub,
vartype=vartype)
self._solver_model.addVariable(xpress_var)
## bounds on binary variables don't seem to be set correctly
## by the method above
if vartype == self._xpress.binary:
if lb == ub:
self._solver_model.chgbounds([xpress_var], ['B'], [lb])
else:
self._solver_model.chgbounds([xpress_var, xpress_var],
['L', 'U'], [lb, ub])
self._pyomo_var_to_solver_var_map[var] = xpress_var
self._solver_var_to_pyomo_var_map[xpress_var] = var
self._referenced_variables[var] = 0
def _add_var(self, var):
varname = self._symbol_map.getSymbol(var, self._labeler)
vtype = self._gurobi_vtype_from_var(var)
if var.has_lb():
lb = value(var.lb)
else:
lb = -self._gurobipy.GRB.INFINITY
if var.has_ub():
ub = value(var.ub)
else:
ub = self._gurobipy.GRB.INFINITY
if var.is_fixed():
lb = value(var.value)
ub = value(var.value)
gurobipy_var = self._solver_model.addVar(lb=lb,
ub=ub,
vtype=vtype,
name=varname)
self._pyomo_var_to_solver_var_map[var] = gurobipy_var
self._solver_var_to_pyomo_var_map[gurobipy_var] = var
self._referenced_variables[var] = 0
self._needs_updated = True
def set_var_boundtype(self, var, ub, lb):
if var.is_fixed():
return self._mosek.boundkey.fx
elif ub != '0' and lb != '0':
return self._mosek.boundkey.ra
elif ub == '0' and lb == '0':
return self._mosek.boundkey.fr
elif ub != '0' and lb == '0':
return self._mosek.boundkey.up
return self._mosek.boundkey.lo
def _xpress_lb_ub_from_var(self, var):
if var.is_fixed():
val = var.value
return val, val
if var.has_lb():
lb = value(var.lb)
else:
lb = -xpress.infinity
if var.has_ub():
ub = value(var.ub)
else:
ub = xpress.infinity
return lb, ub
def _gurobi_lb_ub_from_var(self, var):
if var.is_fixed():
val = var.value
return val, val
if var.has_lb():
lb = value(var.lb)
else:
lb = -self._gurobipy.GRB.INFINITY
if var.has_ub():
ub = value(var.ub)
else:
ub = self._gurobipy.GRB.INFINITY
return lb, ub
def _add_var(self, var):
varname = self._symbol_map.getSymbol(var, self._labeler)
vtype = self._gurobi_vtype_from_var(var)
if var.has_lb():
lb = value(var.lb)
else:
lb = -self._gurobipy.GRB.INFINITY
if var.has_ub():
ub = value(var.ub)
else:
ub = self._gurobipy.GRB.INFINITY
gurobipy_var = self._solver_model.addVar(lb=lb, ub=ub, vtype=vtype, name=varname)
self._pyomo_var_to_solver_var_map[var] = gurobipy_var
self._solver_var_to_pyomo_var_map[gurobipy_var] = var
self._referenced_variables[var] = 0
if var.is_fixed():
gurobipy_var.setAttr('lb', var.value)
gurobipy_var.setAttr('ub', var.value)
