[ojAlgo-user] addLinearExpression java.lang.IllegalArgumentException: Must be a row vector!

[Luke L. <luk...@gm...>]

What is the correct way to create a row vector for
ExpressionsBasedModel.addLinearExpression?  The code below throws an
excecption:

LinearExpressionsModel model = new LinearExpressionsModel(vars);
Access1D a1d = Array1D.makePrimitive(2);
model.addLinearExpression("LinearExpression", a1d);

Must be a row vector!
java.lang.IllegalArgumentException: Must be a row vector!
at org.ojalgo.function.multiary.LinearFunction.<init>(LinearFunction.java:91)
at org.ojalgo.function.multiary.LinearFunction.makeBig(LinearFunction.java:39)
at org.ojalgo.optimisation.Expression.makeLinear(Expression.java:70)
at org.ojalgo.optimisation.ExpressionsBasedModel.addLinearExpression(ExpressionsBasedModel.java:160)