Dispmat

Purpose

Calculates the dispersion matrix of two spectral data sets.

Synopsis

[c,meansx,meansy,stdsx,stdsy] = dispmat(x,y,options);

Description

Calculates a dispersion matrix, as defined by the options, of datasets x and y.

INPUTS

• x : (2-way array class "double" or "dataset") x-matrix for dispersion matrix.

• y : (2-way array class "double" or "dataset") y-matrix for dispersion matrix.

OUTPUTS

• c : dispersion matrix, as defined by options.

• meansx : mean of x.

• meansy : mean of y.

• stdsx : standard deviation of x.

• stdsy : standard deviation of y.

Options

• offsetx : [0] offset for x.

• offsety : [0] offset for y.

• dispersion : [1] dispersion matrix calculated:

• 1: standardized, offset corrected

• 2: length sqrt(nrows), offset corrected

• 3: purity about mean, offset corrected

• 4: purity about origin, offset corrected

• 5: asynchronous, offset corrected

See Also

corrspec, corrspecengine, purity