DiscriminantAnalysis.Update Method (Double[,], Int32, Int32[])

Processes a set of observations and performs a linear or quadratic discriminant function analysis among the several known groups.

public void Update(
   double[,] x,
   int groupIndex,
   int[] varIndex
);

Parameters

x: A double matrix containing the observations.
groupIndex: An int containing the column index of x in which the group numbers are stored.
varIndex: An int array containing the column indices in x that correspond to the variables to be used in the analysis.

Remarks

The columns indicated in varIndex correspond to the variables, and groupIndex column contains the group numbers. The groups must be numbered 1,2, ..., nGroups.

Exceptions

Exception Type	Condition
SumOfWeightsNegException	is thrown if the sum of the weights have become negative.
EmptyGroupException	is thrown if there are no observations in a group. Cannot compute statistics.
CovarianceSingularException	is thrown if the variance-Covariance matrix is singular.
PooledCovarianceSingularException	is thrown if the pooled variance-Covariance matrix is singular.

DiscriminantAnalysis.Update Method (Double[,], Int32, Int32[])

Parameters

Remarks

Exceptions

See Also