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How can I calculate principal components using the covariance matrix instead of the correlation matrix?

You can set the "cov" parameter to TRUE. By default, it is set to FALSE.

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On: eig

What defines an articulation point?

An articulation point, also known as a cut vertex, is a node in a graph whose removal would increase the number of connected components, effectively splitting the graph into separate subgraphs.

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On: biconnectedComponents

outTree={casouttable}

creates a data set that depicts a tree diagram to display the hierarchical clustering results. The tree diagram can be plotted using the DENDROGRAM statement in the Graph Template Language. For more information about specifying the outTree parameter, see the common casouttable (Form 1) parameter (Appendix A: Common Parameters).

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On: gvarcluster

Which parameter is required to specify the output table?

The casOut parameter is required to specify the settings for the output table.

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On: flattenImages

What is the function of the `casOut` parameter?

The `casOut` parameter is required and is used to specify the settings for the output table where the comparison results will be stored.

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On: compareImages