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st: "too many sersets" errors; sersets limits?


From   "Stephen P. Jenkins" <stephenj@essex.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: "too many sersets" errors; sersets limits?
Date   Tue, 19 May 2009 14:41:15 +0100

Advice please about sersets. I am making repeated calls to -xtline,
overlay- and saving the resulting graphs. The "t" dimension is up to
17, and the "i" dimension may refer to several hundred persons
("panels" in Stata manual jargon). I then -graph combine- several
groups of graphs. 

When I later, in the same session, try and -graph use- one of the
combined graphs, I get a "too many sersets" error message, and no
graph drawn. A portion of the error message is reproduced below; if no
Break is issued, I get several screens full of red.  

I seem to be able to get round this problem only by issuing a -serset
clear- command, or by starting a new Stata session.

I've looked at -help serset-, and [P] serset, and don't get much
illumination from them. So, my questions are:

* what is the "number of sersets" capacity of a Stata session, and can
it be changed? (e.g. via -set memory-?)
* any tips to pass on concerning the number of sersets generated by
different graphics commands?
* [StataCorp] would it be possible to have more informative error
messages in this case please?

. dir llabinc_females_all.gph
864.4k   5/19/09 14:01  llabinc_females_all.gph

.about
Stata/MP 10.1 for Windows
Born 02 Feb 2009
Total physical memory:     2097151 KB
Available physical memory: 2097151 KB

. memory
                                                  bytes
--------------------------------------------------------------------
Details of set memory usage
    overhead (pointers)                       1,684,384        0.32%
    data                                     79,587,144       15.18%
                                        ----------------------------
    data + overhead                          81,271,528       15.50%
    free                                    443,016,464       84.50%
                                        ----------------------------
    Total allocated                         524,287,992      100.00%
--------------------------------------------------------------------
Other memory usage
    set maxvar usage                          2,001,730
    set matsize usage                         1,315,200
    programs, saved results, etc.               719,965
                                        ---------------
    Total                                     4,036,895
-------------------------------------------------------
Grand total                                 528,324,887

. graph use llabinc_females_all.gph
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
unrecognized command:  < invalid command name
invalid syntax
error (199) reading file
Error in file, skipping lines:
 <EndSerset>
<EndItem>
too many sersets
unrecognized command:  < invalid command name
invalid syntax
error (199) reading file
Error in file, skipping lines:
 <EndSerset>
<EndItem>
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
too many sersets
unrecognized command:  < invalid command name
invalid syntax
error (199) reading file
Error in file, skipping lines:
 <EndSerset>
<EndItem>
too many sersets
too many sersets
too many sersets
too many sersets
unrecognized command:  < invalid command name
invalid syntax
error (199) reading file
Error in file, skipping lines:
 <EndSerset>
<EndItem>
too many sersets
too many sersets
error (1) reading file
too few quotes
graph1.gversion invalid name
<<<< break >>>>>>
r(198);


Stephen
-------------------------------------------------------------
Professor Stephen P. Jenkins <stephenj@essex.ac.uk>
Director, Institute for Social and Economic Research
University of Essex, Colchester CO4 3SQ, U.K.
Tel: +44 1206 873374.  Fax: +44 1206 873151.
http://www.iser.essex.ac.uk  
Survival Analysis using Stata:
http://www.iser.essex.ac.uk/iser/teaching/module-ec968
Downloadable papers and software: http://ideas.repec.org/e/pje7.html


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