Dear all,
on behalf of my co-authors Christian Brzinsky-Fay and Magdalena Luniak I like
to inform you, that a bundle of Stata programs (SQ-Ados) for performing
sequence analysis has been uploaded to the SSC-Archive. The programs can be
installed from within Stata with
. ssc install sq
Sequences are entities build by a limited number of elements that are ordered
in a specific way. A typical example is the human DNA, where the "Elements"
Adenin, Cytosin, Guanin and Thymin (the "organic Bases") are ordered into a
sequence. Other sequences are songs, that are build by tones that appear in a
specific order, or careers of employers that are build by specific
job-positions and ordered along time.
The SQ-Ados are a bundle of commands to describe, analyze and group the
sequences of a sequence dataset. As it stands the following sq commands are
available:
sqset Declare data to be sequence data
sqdes Describe sequences
sqtab Tabulate sequences
sqegen Generate variables reflecting entire sequences
sqstat Describe, summarize, and tabulate sq-egenerated variables
sequences
sqindexplot Graph sequences as sequence index plot
sqparcoord Graph sequences with parallel coordinates.
sqom Optimal matching of sequences
sqclusterdat Prepare a dataset to perform Cluster analyses on the
results of sqom
sqclustermat Perform one Cluster analysis on the results of sqom
All programs are fully documented with help files. In addition -help sq-
provides a general introduction and -help sqdemo- a software demonstration.
An article for the Stata Journal is "in the making".
Installation note
------------------
Installation of the SQ-Ados conflicts with the older SQ-package by Nick Cox.
Users of this package need to install the SQ-Ados with
. ssc install sq, replace
and reinstall Nicks package with
. ssc install sqr
Here is Kit Baum's explanation for breaking the rule that the first claimant
of a name has rights to the name:
> ... There was a little problem, which was not immediately
> apparent as you do not actually have a sq.ado. The module name SQ was
> already in use within SSC by Nick Cox for a graph7 utility. As I did
> not detect this problem until partway through the installation, I did
> not follow the usual rule that the first claimant of a name has
> rights to the name. As your package is very large and complicated,
> and has been designed for Stata 9 with Mata components, I decided to
> exercise the discretion to rename Nick's sq routine to sqr (it makes
> old-style graphs square). That seemed more straightforward than
> insisting that you rename your entire suite of routines something
> like 'seq';
My apologies to Nick for taking over his name, and many thanks to Kit Baum for
not forceing me to change the SQ-Ado bundle.
Many regards
Ulrich Kohler
--
[email protected]
+49 (030) 25491-361
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