That is exactly what happen. There was a cluster
analysis performed previously on these data by a
colleague and store that way. I am sorry for my
oversight. Everything is fine now.
Thank you,
Ricardo
--- Steven Joel Hirsch Samuels
<[email protected]> wrote:
> --
>
> The name option names group variable. In Stata
> 9.2, only one group
> variable is created at a time. Did you run a
> previous cluster
> analysis on the same data, possibly different
> variables, with three
> groups and "name(cluster)"? If so, that would
> account for your
> finding.
>
> --Steve
>
> Example:
>
> . sysuse auto
> (1978 Automobile Data)
>
> . cluster kmeans mpg weight displacement, k(3)
> name(cluster01)
>
> . cluster list cluster01
> cluster01 (type: partition, method: kmeans,
> dissimilarity: L2)
> vars: cluster01 (group variable)
> other: k: 3
> start: krandom
> range: 0 .
> cmd: cluster kmeans mpg weight
> displacement, k(3) name
> (cluster01)
> varlist: mpg weight displacement
>
>
> . tab cluster01
>
> cluster01 | Freq. Percent Cum.
> ------------+-----------------------------------
> 1 | 15 20.27 20.27
> 2 | 39 52.70 72.97
> 3 | 20 27.03 100.00
> ------------+-----------------------------------
> Total | 74 100.00
>
> . ds
> make mpg headroom weight
> turn
> gear_ratio cluster01
> price rep78 trunk length
> displacement
> foreign
>
>
>
>
>
> On Aug 8, 2007, at 12:56 PM, Ricardo Ovaldia wrote:
>
> > Thank you Nick. But I am not sure that helps. Both
> > variables are discrete taking the values 1, 2 and
> 3.
> > (I specific 3 clusters). Every value of -C1-
> appears
> > for every value of -cluster-. I am at lost.
> >
> >
> > | c1
> > cluster | 1 2 3 |
> > Total
> >
>
-----------+---------------------------------+----------
> > 1 | 71 90 17 |
> > 178
> > 2 | 4 200 596 |
> > 800
> > 3 | 123 164 5 |
> > 292
> >
>
-----------+---------------------------------+----------
> > Total | 198 454 618 |
> > 1,270
> >
> >
> >> --- Nick Cox <[email protected]> wrote:
> >>
> >>> A scatter plot of the two variables may
> >>> throw light on this.
> >>>
> >>> Nick
> >>> [email protected]
> >>>
> >>> Ricardo Ovaldia
> >>>
> >>>> This may be a very simple question, but I can't
> >>> find
> >>>> the answer. Doing a cluster analysis I typed:
> >>>>
> >>>> . cluster kmeans q4_*, k(3) name(c1)
> >> s(kr(67492))
> >>>>
> >>>> I get two new variables -c1- and -cluster-.
> >> These
> >>> are
> >>>> different. Could someone please tell me what is
> >>> the
> >>>> difference between these two variables? Which
> >> one
> >>> is
> >>>> the cluster indicator.
> >>>
> >>> *
> >>> * For searches and help try:
> >>> *
> >>>
> http://www.stata.com/support/faqs/res/findit.html
> >>> * http://www.stata.com/support/statalist/faq
> >>> * http://www.ats.ucla.edu/stat/stata/
> >>>
> >>
> >>
> >> Ricardo Ovaldia, MS
> >> Statistician
> >> Oklahoma City, OK
> >>
> >>
> >>
> >>
> >
>
______________________________________________________________________
>
> > ______________
> >> Need a vacation? Get great deals
> >> to amazing places on Yahoo! Travel.
> >> http://travel.yahoo.com/
> >> *
> >> * For searches and help try:
> >> *
> >> http://www.stata.com/support/faqs/res/findit.html
> >> * http://www.stata.com/support/statalist/faq
> >> * http://www.ats.ucla.edu/stat/stata/
> >>
> >
> >
> > Ricardo Ovaldia, MS
> > Statistician
> > Oklahoma City, OK
> >
> >
> >
> >
>
______________________________________________________________________
>
> > ______________
> > Fussy? Opinionated? Impossible to please? Perfect.
> Join Yahoo!'s
> > user panel and lay it on us.
> http://surveylink.yahoo.com/gmrs/
> > yahoo_panel_invite.asp?a=7
> >
> > *
> > * For searches and help try:
> > *
> http://www.stata.com/support/faqs/res/findit.html
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
>
> Steven Joel Hirsch Samuels
>
> [email protected]
> 18 Cantine's Island
> Saugerties, NY 12477
> Phone: 845-246-0774
> EFax: 208-498-7441
>
>
>
>
> *
> * For searches and help try:
> *
> http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
____________________________________________________________________________________
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http://sims.yahoo.com/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
