NumberOfWellConditionedModes

Estimate how many columns of a mode matrix remain numerically well conditioned.

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Declaration

 N = NumberOfWellConditionedModes(G,varargin)

Parameters

• G mode matrix whose columns are ordered by mode number
• varargin reserved for future options

Returns

• N estimated count of usable leading modes

Discussion

        This function can become a rate limiting step if used for   each set of returned modes. So a good algorithm is necessary.   Otherwise we'd just use,
kappa = InternalModes.ConditionNumberAsFunctionOfModeNumber(G);
N = find(diff(diff(log10(kappa))) > 1e-2,1,'first')+2;