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| From | "Ed Levitas" <levitas@uwm.edu> |
| To | <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: Clustering with Sequence analysis/optimal matching |
| Date | Wed, 21 Mar 2012 16:32:43 +0000 |
Sent from my iPad On Mar 21, 2012, at 3:25 PM, "Stefan Weih" <Stefan.Weih@wiso.stud.uni-erlangen.de> wrote: > Uli, > > thank you very much. The update works well regarding the clustering. > > Please, let me ask one more question: > > In determining the optimal number of clusters I tried to create a > dendrogram using the syntax: > > cluster tree wards, cutnumber(20) > > Unfortunately, it returns the error message "currently can't handle > dendrogram reversals". > > Am I missing something here? Or is there are a way to make it work? > Alternatively, is there another command which I could apply? I am thinking > of e.g. cluster stop (however, I am not quite sure which variables then > to use with this command). > > Highly appreciate your support. > > Best regards > Stefan > > >> Stefan, >> >> the problem that you are reporting typcially happens with the version of >> the program that was distributed togehter with the cited SJ article. >> There is a newer version of the program available on SSC. Please use >> >> . ado uninstall st0111 >> . ssc install sq >> >> to update to the most recent version of the package. >> >> Note as an aside that the most recent version of the sq-package also has >> a lot of new features, including further functions for -egen-, a way to >> apply multidimensional scaling to the distance matrix, decreased >> overplotting of lines in sequence index plots, and a new graphical >> device for plotting "ideal typical" sequences (-sqmodalplot-). >> >> Many regards >> >> Uli >> >> >> >> Am Mittwoch, den 21.03.2012, 11:38 +0100 schrieb Stefan Weih: >>> Dear Statalist-members, >>> >>> I am currently analyzing diversification strategy sequences with 16 >>> potential sequence states using the sqom (optimal matching) command. >>> As a common next step I would like to cluster my sqom-results. For this, >>> I >>> am using the command sqclusterdat procedure as described in “Sequence >>> analysis with Stata†(Brzinsky-Fay/Kohler/Luniak, 2006, The Stata >>> Journal6(4), 435-460). The syntax I am using looks the following: >>> >>> sqset Seq ID Order >>> >>> sqom, subcost(matrixA) full >>> >>> sqclusterdat >>> clustermat wardslinkage SQdist, name(wards) add >>> sqclusterdat, return >>> >>> However, the clustering does not work properly. After performing >>> sqclusterdat, return I keep receiving the following message “Group >>> results >>> could not be merged to sequence data. Returned to original sequence >>> dataâ€. >>> >>> Unfortunately the cause for this message is not obvious to me. I am >>> thankful for any guidance and hints that can help me out. >>> >>> Sincerely, >>> Stefan Weih >>> >>> >>> The data looks like: >>> >>> ID Seq Order >>> 41 11 1 >>> 41 13 2 >>> 41 11 3 >>> 41 21 4 >>> 42 11 1 >>> 42 13 2 >>> 42 12 3 >>> 42 11 4 >>> 43 14 1 >>> 43 13 2 >>> 43 11 3 >>> 43 12 4 >>> >>> >>> * >>> * For searches and help try: >>> * http://www.stata.com/help.cgi?search >>> * http://www.stata.com/support/statalist/faq >>> * http://www.ats.ucla.edu/stat/stata/ >> >> >> >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/statalist/faq >> * http://www.ats.ucla.edu/stat/stata/ >> > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/