Thanks Ken (and Richard) - that's very helpful.
Cheers,
Mark
> "Mark Schaffer" <[email protected]> asks:
>
>> Under Stata 9.0 and earlier, up to 20 estimation results could be stored
>> using -estimates store-.
>>
>> Under Stata 9.1, this limit has been increased to 300 estimation
>> results.
>>
>> If I have a program that starts with, say, -version 8.2-, and I run it
>> under Stata 9.1, will the maximum number of estimation results that the
>> program can store be 20 or 300?
>
> Your old program (with a -version- statement less than 9.1) run
> in a modern Stata version 9.1 will allow the 300 estimation
> results to be stored. Setting the -version- to a smaller number
> does not turn off this new feature.
>
> Having an older -version #- statement does not turn off the new
> features introduced in later versions. It only changes the
> behavior of commands for those limited cases where version
> controlling is really needed. Take a look at
>
> -help version-
>
> and scroll down to the section titled "Summary of version
> changes" about a third of the way down the file. This section
> lists what behavior differs based on the -version- you set in
> your program.
>
> Here are some guidelines on what setting -version #- does and
> does not do:
>
> 1) When the syntax of a command changes so that the old and
> new syntaxes are NO LONGER COMPATIBLE, then setting
> -version #- to the older version makes the command
> understand the older syntax. Otherwise the new syntax is
> understood.
>
> For many of the commands that we alter, the old and new
> syntaxes do not conflict and both continue to be
> understood (but only the new syntax continues to be
> documented).
>
> 2) If you place an older version number at the top of a
> command or do file, it does not keep you from using more
> modern features (except in those few cases where version
> control had to be imposed, see #1).
>
> Sometimes people think that if they are running Stata 9.1
> and they place a -version 8- at the top of a program or do
> file, get it running in their modern Stata, and then give
> it to someone who only has Stata 8 (has not purchased
> Stata 9) that the person using Stata 8 will be able to run
> the program or do file. The Stata 8 user will only be
> able to run it if you avoid all the new commands and
> language features found in your more modern Stata.
>
> 3) We do not version control buggy behavior.
>
> I don't think anyone would want us to restore a bug when
> -version- is set to an older number -- and we do not.
>
> 4) We USUALLY do not version control output style
> modifications. For instance, if we make the output of a
> command look nicer (use smcl, clickable links in the
> output giving additional help of information, slight
> changes in the spacing of the columns, ...), the nicer
> look happens regardless of the -version #- setting.
>
> Ken Higbee [email protected]
> StataCorp 1-800-STATAPC
>
> *
> * 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/
>
Prof. Mark Schaffer
Director, CERT
Department of Economics
School of Management & Languages
Heriot-Watt University, Edinburgh EH14 4AS
tel +44-131-451-3494 / fax +44-131-451-3294
email: [email protected]
web: http://www.sml.hw.ac.uk/ecomes
__________________________________________________________________
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*
* 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/
