KMAXIMA

Specified number of maxima.

KMAXIMA specified number of maxima
For vectors, KMAXIMA(X,K) is the vector of K largest elements in X.
For matrices, Y = KMAXIMA(X,K) is a matrix with K rows. The i-th row
of Y contains the i-th maximum element from each column. For N-D
arrays, KMAXIMA(X,K) operates along the first non-singleton dimension.

[Y,I] = KMAXIMA(X,K) returns the indices of the maximum values in vector I.

[Y,I] = KMAXIMA(X,K,DIM) operates along the
dimension DIM.

When complex, the magnitude ABS(X) is considered when computing the
maxima, and the angle ANGLE(X) is ignored. NaN's are also ignored .