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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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PRINCALS<br />

Overview<br />

Options<br />

PRINCALS is available in the Categories option.<br />

PRINCALS VARIABLES=varlist(max)<br />

[/ANALYSIS=varlist[({ORDI**})]]<br />

{SNOM }<br />

{MNOM }<br />

{NUME }<br />

[/NOBSERVATIONS=value]<br />

[/DIMENSION={2** }]<br />

{value}<br />

[/MAXITER={100**}]<br />

{value}<br />

[/CONVERGENCE={.00001**}]<br />

{value }<br />

[/PRINT=[DEFAULT] [FREQ**] [EIGEN**] [LOADINGS**] [QUANT]<br />

[HISTORY] [CORRELATION] [OBJECT] [ALL] [NONE]]<br />

[/PLOT=[NDIM=({1 ,2 }**)]<br />

{value,value}<br />

{ALL ,MAX }<br />

[DEFAULT[(n)]] [OBJECT**[(varlist)][(n)]]<br />

[QUANT**[(varlist)][(n)]] [LOADINGS[(n)]]<br />

[ALL[(n)]] [NONE]]<br />

[/SAVE=[rootname] [(value}]<br />

[/MATRIX=OUT({* })]<br />

{file}<br />

**Default if subcommand or keyword is omitted.<br />

PRINCALS (principal components analysis by means of alternating least squares) analyzes<br />

a set of variables for major dimensions of variation. The variables can be of mixed optimal<br />

scaling levels, and the relationships among observed variables are not assumed to be linear.<br />

Optimal scaling level. You can specify the optimal scaling level for each variable to be used<br />

in the analysis.<br />

Number of cases. You can restrict the analysis to the first n observations.<br />

Number of dimensions. You can specify how many dimensions PRINCALS should compute.<br />

Iterations and convergence. You can specify the maximum number of iterations and the value<br />

of a convergence criterion.<br />

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