what does this error mean?

"Array formation and parentheses-style indexing with objects of class 'phased.RootMUSICEstimator' is not allowed. Use objects of class 'phased.RootMUSICEstimator' only as scalars or use a cell array." I get this error when try to estimate DOA with MUSIC algorithm.

   rootmusicangle = phased.RootMUSICEstimator('SensorArray',ula,...
            'OperatingFrequency',fc,...
            'NumSignalsSource','Property','NumSignals',2);

Thanks in advance

Answer 1

[Walter Roberson]

Somehow, phased.RootMUSICEstimator has stopped being a constructor that takes options, and has become a particular phased.RootMUSICEstimator object, and it thinks the 'SensorArray',ula and so on are indices into an array of such objects.

Perhaps at some point there has been a

phased.RootMUSICEstimator = .... something

call ?

[Walter Roberson]

Sorry, my system is occupied with a long-running task; I cannot test at the moment.