[Cilib-users] matrix representation

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registry.setDomainString("[R(-5.0, 5.0)^10]^10");
yeah, that does not work too well. I get the following error:

Exception in thread "main" java.lang.UnsupportedOperationException:  
Attempted to perform a numeric operation on non-numeric type
at  
net.sourceforge.cilib.type.types.container.Vector.getNumeric(Vector.java:414)
at  
net.sourceforge.cilib.type.types.container.Vector.getReal(Vector.java:466)
at  
net.sourceforge.cilib.pso.velocityupdatestrategies.StandardVelocityUpdate.updateVelocity(StandardVelocityUpdate.java:89)
at  
net.sourceforge.cilib.pso.particle.StandardParticle.updateVelocity(StandardParticle.java:186)
at  
net.sourceforge.cilib.pso.iterationstrategies.SynchronousIterationStrategy.performIteration(SynchronousIterationStrategy.java:69)
at  
net.sourceforge.cilib.pso.iterationstrategies.SynchronousIterationStrategy.performIteration(SynchronousIterationStrategy.java:36)
at net.sourceforge.cilib.pso.PSO.algorithmIteration(PSO.java:125)
at  
net.sourceforge.cilib.algorithm.Algorithm.performIteration(Algorithm.java:140)
at net.sourceforge.cilib.algorithm.Algorithm.run(Algorithm.java:182)