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From |
Richard Williams <richardwilliams.ndu@gmail.com> |

To |
statalist@hsphsun2.harvard.edu, "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: use13 : an experimental Stata command to import datasets in new Stata 13 format into older versions of Stata |

Date |
Wed, 19 Jun 2013 17:45:47 -0400 |

At 05:31 PM 6/19/2013, Sergiy Radyakin wrote:

On Wed, Jun 19, 2013 at 5:19 PM, Richard Williams <richardwilliams.ndu@gmail.com> wrote: > I tried converting this file with Stat/Transfer 12. It ran but the variable Richard, which file? What was the original variable type and storage type?

It was the toy 2 observation file Robert created that included the command gen s = "x" * 5000 Complete code is below in the earlier messages.

> was saved in str244 format and there was no warning that this washappening.For strL variables -use13- reports as follows: * * * * * * * * * * * * * * * * * * * * * Converting file ...{skipped}....\use13\strltest.dta Variable xstrl has type strL which is not supported in this version of Stata. This variable is dropped. * * * * * * * * * * * * * * * * * * * * * Sergiy Radyakin > The S/T help says > > "Stata Version 13 includes a new strl data type. These are potentially > very long, variable length strings. Stat/Transfer will write strings > longer than a threshold value to Stata strl's rather than strings. The > threshold, by default, is 32 characters, but you can change this on the > Options (1) screen. Strings longer than Stata's width limit of 244 > characters will always be written to strls. Dates are written to Stata's > internal date format." > > I think the moral is if you are going to have monster strings, you better > have everybody working with Stata 13. > > I suspect S/T just assumes you know what you are getting when you ask for a > conversion, i.e. you have to read the help because it won't otherwise warn > you what compromises had to be made. > > > At 03:09 PM 6/19/2013, Robert Picard wrote: >> >> The -saveold- command of Stata 13 returns an error if the data >> contains a long string: >> >> . clear >> >> . set obs 2 >> obs was 0, now 2 >> >> . gen s = "x" * 5000 >> >> . saveold test.dta >> data cannot be saved in old format >> Data contain strL or str#, #>244, and prior releases of Stata >> would not know how to process these variables. Either drop the >> variables or use recast with the force option to change them to >> str244. >> r(459); >> >> >> >> On Wed, Jun 19, 2013 at 2:25 PM, Sergiy Radyakin <serjradyakin@gmail.com> >> wrote: >> > On Wed, Jun 19, 2013 at 1:11 PM, Nick Cox <njcoxstata@gmail.com> wrote: >> >> I have no access to Stata 13, but there is precisely no point to >> >> -saveold- if Stata 12 is presented with data features it can not >> >> handle. So, at best long string variables will get truncated at 244 >> >> characters. That's my guess. >> > >> > The idea is to be creative and make the content accessible in Stata 12. >> > There >> > are several strategies: splitting long variables into chunks, >> > (resume-->resume_1, resume_2, resume_3....) >> > each no longer than 244, or dumping the long variables into a text file, >> > from which the users can pull the strings using alternative methods, >> > etc. >> > The simplest approach is to truncate the data, but it is not >> > necessarily the best. >> > >> > But the bulk of the users are not going to use the new features of Stata >> > 13 >> > right away. Just as many of the datasets that are shipped with Stata 12 >> > can >> > be resaved for Stata 9 without any losses. Consider auto.dta for >> > example. >> > Secondly, since the features of Stata 13 were kept out of public view, >> > noone >> > was planning for them in advance, and having the possibility of long >> > strings >> > would not change the questionnaires being designed this month, and the >> > data >> > collected using them in the next half a year. >> > >> > The feature that lacks in Stata is really: savemin (imaginary name), >> > which would >> > examine the file and save it in the lowest possible version that would >> > not incur >> > losses (that is really a job for save, but let's not get into that). >> > With that, many >> > datasets will end up somewhere in the v4-v7 range (imho). >> > >> > Another strategy could have been dual compatibility: SPSS v7 can read >> > SPSS >> > v11 datasets. It does not understand everything, but the core of data >> > can be read, >> > and decoration is often (not always, but often) not essential. >> > >> >> >> >> I hope you don't get troubled by users who imagine that you have found >> >> a cheap way for them to upgrade without paying! >> > >> > Nothing in the announcement implies that. It is not an upgrade for Stata >> > 12 that >> > delivers features of Stata 13. It is a way to read data from Stata 13 >> > subject to >> > a) limitations of the existing Stata versions and b) my own goals and >> > time/effort >> > constraints. Not sure whether the same argument applies to e.g. >> > StatTransfer, >> > which is doing a similar conversion, though having had more time for >> > implementation (and [hypothetically] more insider information). >> > >> > Best, Sergiy >> > >> > >> >> Nick >> >> njcoxstata@gmail.com >> >> >> >> >> >> On 19 June 2013 18:05, Sergiy Radyakin <serjradyakin@gmail.com> wrote: >> >>> And just as long they continue to "forget" doing this. >> >>> >> >>> Also, I am not sure what is the behavior of -saveold- in Stata 13. >> >>> What does it do with the long strings? The documentation is only >> >>> saying "saves the dataset currently in memory on disk ... in Stata 12 >> >>> format". How is conversion done? >> >>> >> >>> Sergiy. >> >>> >> >>> On Wed, Jun 19, 2013 at 1:00 PM, Nick Cox <njcoxstata@gmail.com> >> >>> wrote: >> >>>> Note that getting your colleagues using Stata 13 to use -saveold- to >> >>>> save their datasets is the age-old solution to this. >> >>>> >> >>>> Nick >> >>>> njcoxstata@gmail.com >> >>>> >> >>>> >> >>>> On 19 June 2013 17:54, Sergiy Radyakin <serjradyakin@gmail.com> >> >>>> wrote: >> >>>>> -use13- is an experimental Stata command to import datasets in new >> >>>>> Stata 13 format into older versions of Stata >> >>>>> >> >>>>> The dataset format has changed in the new version of Stata to be >> >>>>> released on June 24, 2013 to accommodate new features. >> >>>>> >> >>>>> The command will help users who can't upgrade immediately, but need >> >>>>> to >> >>>>> load the data produced by Stata 13 (e.g. by their colleagues who >> >>>>> have >> >>>>> upgraded) during the transition period. >> >>>>> >> >>>>> The use, limitations, and installation instructions are described >> >>>>> here: >> >>>>> http://www.adeptanalytics.org/radyakin/stata/use13/use13.htm >> >>>>> >> >>>>> Best, Sergiy Radyakin >> >>>>> * >> >>>>> * For searches and help try: >> >>>>> * http://www.stata.com/help.cgi?search >> >>>>> * http://www.stata.com/support/faqs/resources/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/faqs/resources/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/faqs/resources/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/faqs/resources/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/faqs/resources/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/faqs/resources/statalist-faq/ >> * http://www.ats.ucla.edu/stat/stata/ > > > ------------------------------------------- > Richard Williams, Notre Dame Dept of Sociology > OFFICE: (574)631-6668, (574)631-6463 > HOME: (574)289-5227 > EMAIL: Richard.A.Williams.5@ND.Edu > WWW: http://www.nd.edu/~rwilliam > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: use13 : an experimental Stata command to import datasets in new Stata 13 format into older versions of Stata***From:*Sergiy Radyakin <serjradyakin@gmail.com>

**Re: st: use13 : an experimental Stata command to import datasets in new Stata 13 format into older versions of Stata***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: use13 : an experimental Stata command to import datasets in new Stata 13 format into older versions of Stata***From:*Sergiy Radyakin <serjradyakin@gmail.com>

*From:*Nick Cox <njcoxstata@gmail.com>

*From:*Sergiy Radyakin <serjradyakin@gmail.com>

*From:*Robert Picard <picard@netbox.com>

*From:*Richard Williams <richardwilliams.ndu@gmail.com>

*From:*Sergiy Radyakin <serjradyakin@gmail.com>

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