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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

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

Subject |
st: RE: RE: AW: AW: AW: AW: AW: Detach value label from string var |

Date |
Wed, 7 Apr 2010 18:53:21 +0200 |

<> Sure, I did give Nick credit in http://www.stata.com/statalist/archive/2010-04/msg00333.html, our posts must have crossed - somewhere on the Atlantic. HTH Martin -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox Sent: Mittwoch, 7. April 2010 18:43 To: statalist@hsphsun2.harvard.edu Subject: st: RE: AW: AW: AW: AW: AW: Detach value label from string var If this works, then with -findname- from SSC, the two calls to -ds- could be replaced by findname, type(string) vall after which `r(varlist)' can be invoked as here. Nick n.j.cox@durham.ac.uk Martin Weiss So here is a way to fake-define a -value label- for the string vars that (seem to) have a -value label-. The example follows from the fake dataset created in my earlier conversation with Marc: clear* xmluse stata_out.xml ds, has(type string) ds `r(varlist)', has(vallabel) foreach var of varlist `r(varlist)'{ cap la de `:value label `var'' 0 "test" 1 "test1" di in r "Now at value label: `:val la `var'', RC is: " _rc } ************* The example shows the value of -ds- once again. We need to -capture- the creation of the -label- since the same -label- may well be attached to two different variables, as is the case in my example. In the second line, the return code shows whether there was a problem or not. Kaulisch, Marc Martin, I certainly can reproduce the behaviour with your example. So I get the point that "string vars with embedded blanks" has nothing to do with the value labels attached to string vars. But I get problems with empty value labels attached to string vars. For example . mlanguage add val, saving(val) // mlanguage is a user-written program Produces an error because mylabel is not defined. Info: -labelbook, p- does not see a problem in this example. It is possible to define mylabel . la de mylabel 0 "test" 1 "test1" Then: -mlanguage- works. So a solution to my problem would be to define all value labels attached to a string var. Another solution would be to do not attach empty value labels to string vars in the first place (my favorite solution). Or on Stata-side - to improve the XML-Import that either such attachements to string vars are ignored or an error while importing is shown - to allow the detachment of value labels from string vars Marc -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Martin Weiss Gesendet: Dienstag, 6. April 2010 18:47 An: statalist@hsphsun2.harvard.edu Betreff: st: AW: AW: AW: Detach value label from string var <> It is indeed a little weird that one can attach a -value label- to a string variable with -xmluse-, which is certainly not possible via the "variables manager" - where the necessary button is disabled for string variables. I am not sure whether this behavior has any real bearing on your "string var with embedded blanks issue", though. Try this: ************* sysuse auto, clear gen str1 newstrvar=cond(_n<50,"A","B") xmlsave stata_out.xml, doctype(dta) replace !start stata_out.xml ************* At this point, you edit lines 62 and 74 of the resulting xml file to read: <lblname varname='make'>mylabel</lblname> and <lblname varname='newstrvar'>mylabel</lblname> respectively. You save the xml file and continue: ************* clear* xmluse stata_out.xml d codebook, p ************* The result is: . codebook, p Potential problems in dataset stata_out.xml potential problem variables -------------------------------------------------- strvars that may be compressed make string vars with embedded blanks make -------------------------------------------------- This result leads me to believe that "string vars with embedded blanks" has nothing to do with the value labels attached to string vars, and everything with the values of the variable itself. Otherwise, "newstrvar" would have to show up in the -codebook- results as well. HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Kaulisch, Marc Gesendet: Dienstag, 6. April 2010 18:17 An: statalist@hsphsun2.harvard.edu Betreff: st: AW: AW: Detach value label from string var We import our data by a XML-file where <lbllist> is given for all vars (e.g. <lblname varname='BN15_2__5'>BN15_2</lblname>) despite (non-)existing value labels defined under <value labels>. A trick would be to remove the value labels for all string vars in the XML-definition <lblname>. I hoped to do this by a Stata command and not going back to our contractor changing the export-mechanism... Marc -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Martin Weiss Gesendet: Dienstag, 6. April 2010 16:35 An: statalist@hsphsun2.harvard.edu Betreff: st: AW: Detach value label from string var <> What does "importing a dataset" mean? The effect does not seem to occur here: ************* sysuse auto, clear outsheet using myfile.csv, comma replace clear* insheet using myfile.csv, comma clear d la dir codebook, p ************* -codebook- returns "make" as a "string var with embedded blanks", but how is this issue connected to any -label-? HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Kaulisch, Marc Gesendet: Dienstag, 6. April 2010 15:32 An: statalist@hsphsun2.harvard.edu Betreff: st: Detach value label from string var Another problem I cannot solve myself: By importing a dataset all variables get label values attached - also string vars. This leads to "string vars with embedded blanks" by codebook, p. For numeric vars with empty value labels I used: . label values `r(labelnotfound)' . But . label values `r(str_embedded)' . does not work. I even can not do this via the Variables Manager. Any idea how to do this? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/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/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**st: RE: RE: RE: AW: AW: AW: AW: AW: Detach value label from string var***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**st: AW: AW: AW: AW: Detach value label from string var***From:*"Kaulisch, Marc" <kaulisch@forschungsinfo.de>

**st: AW: AW: AW: AW: AW: Detach value label from string var***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**st: RE: AW: AW: AW: AW: AW: Detach value label from string var***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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