help spmat eigenvalues
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Title

    spmat eigenvalues -- Add eigenvalues of the spatial-weighting matrix W to
                           an spmat object


Syntax

        spmat eigenvalues objname [, options]


    options                         Description
    -------------------------------------------------------------------------
      eigenvalues(vecname)          Mata vector containing eigenvalues
      replace                       replace existing eigenvalues
    -------------------------------------------------------------------------

    
Description

    spmat eigenvalues calculates the eigenvalues of the spatial-weighting
    matrix W contained in the spmat object objname and stores them in
    objname.  Having precomputed eigenvalues in objname will speed up the
    estimation command spreg ml.


Options

    eigenvalues(vecname) specifies a Mata vector containing the eigenvalues
        of W.  The vector must be stored as a complex rowvector.

    replace allows the existing eigenvalues to be overwritten.


Example

    Setup
        . spmat use cobj using pollute.spmat

    Add eigenvalues to the spmat object cobj
        . spmat eigenvalues cobj


Also see

    Online:  spmat, spreg, spivreg, spmap, shp2dta, mif2dta (if installed)