Clustan Wizard 

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Three clicks and you're clustered...

... it's as easy as one - two - three.  Clustan Wizard was introduced to satisfy a demand for a quick hierarchical cluster analysis that invokes the standard defaults options.  Based on our new Auto Script feature, Clustan Wizard completes a full hierarchical cluster analysis, from reading data through to a significance test for the best number of clusters, plotting the dendrogram and saving the corresponding cluster membership table, all in one dialogue.

To use Clustan Wizard you need to store your data on an Excel spreadsheet.  This can include the case labels (in column 1) and variable names (in row 1), as in the Mammals case study.  To have a look at the data file we are reading you can download the Mammals spreadsheet (27kb) here.

 Clustan Wizard Now click the Clustan Wizard icon and the following dialogue appears:

Simply enter the Excel Spreadsheet that contains your data and click OK - three clicks and you're clustered.

Enter your Excel spreadsheet file in field 1, or double-click to find your file.  If you wish, you can change the parameters - somply select from the pull-down lists.  Then click OK, and your data will be standardized and clustered hierarchically.  In this example we clustered by Average Linkage using the Euclidean distance matrix computed at step 3.

Clustan Wizard invoked Best Cut, which determined that the 4-cluster partition is significant.

Your tree will now be displayed with the optimum 4-cluster partition shaded and the cluster exemplars underlined, as follows:

Hierarchical cluster analysis by average linkage, optimally ordered, shaded at the best cut of 4 clusters

The dendrogram has been seriated so that the order of the labels is optimal - all the equines are contiguous, as are the pairs of primates, camelids and bovines.  Further details about our optimal reordering procedure can be found here.

Finally, the cluster membership table for 2-4 cluster partitions has been saved and can be opened in a word processor such as Microsoft Word, or in a spreadsheet like Excel, as shown below.Cluster membership table for the 2, 3 and 4 cluster partitions of the dendrogram produced by average linkage.

You are now ready to explore your data and cluster model, using cluster profiles, navigate tree, proximity analysis, and so on.

The beauty of ClustanGraphics is that it is fully integrated with the standard Windows applications that you routinely use.  There's no need to learn a new computer language, or carry the excess baggage of data management and report writing that is typically required with other software.

Just put your data on a spreadsheet following the Mammals example , fire up Clustan Wizard, then ... three clicks and you're clustered.

Clustan Wizard is the perfect introduction to cluster analysis for new students.  The example shown here can also be found in the book Cluster Analysis, Fourth Edition, by Everitt, Landau and Leese, Arnold, London, 84-88.  We even offer an introductory tutorial to get the Clustan Wizard class working.

To order ClustanGraphics with the Clustan Wizard, click here.