Re: [Rd] (PR#9896) read.spss converts string variables with

From: <honza_at_ifolk.cz>
Date: Wed, 05 Sep 2007 11:25:57 +0200 (CEST)


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I am sending two files attached. The file problem_file.sav was saved in SPSS 10.0. It contains variables of various types, with and without labeling etc., so that you can make experiments.

The file problem_file_read.RData was saved in R 2.5.1 (foreign library version 0.8-20). It contains two data frames Schools and Schools2. The former is result of
read.spss("problem_file.sav",to.data.frame=TRUE,use.value.labels=TRUE), the latter differs in use.value.lables=FALSE only. As you can see, in the first case read.spss has not read values of string labeled variables at all.

I use WinXP.

Thank you for your work!

Jan Hucin



Reference: <
20070903104656.1D1566691D@slim.kubism.ku.dk>

There is nothing we can do to reproduce this without an example 'some.sav' file exhibiting the problem. Can you please supply one?

On Mon, 3 Sep 2007, honza_at_ifolk.cz wrote:

> Full_Name: Jan Hucin
> Version: 2.5.1 (foreign 0.8-20)
> OS: WinXP
> Submission from: (NULL) (195.113.83.7)
>
>
> When reading an SPSS file:
>
> - containing some variable of type String
> - with value labels at that variable
> - and with determination which values of that variable are considered to be
> missing,
>
> I have always get <NA> where digits were in the original SPSS file.
>
> Example:
> Let's have in an SPSS file "some.sav" the variable A. The type of the
variable
> is String of length 1.
> Let's have a value labeling: 1 = Yes, 2 = No, 8 = Invalid, 9 = Missing.
> Let's determine that value 9 is considered to be missing.
> When this file is read by
abc=read.spss("some.sav",use.value.labels=TRUE), we
> get <NA> in abc$A on places where "1", "2" etc. were. Surprisingly, we
get "N/A"
> (not <NA>!) on the place where the string "N/A" is.
>
> If we specify use.value.labels=FALSE, then we get string values (such as
"1",
> "2") but we lose value labels (Yes, No etc.).
>
> Let me add that if the variable in the original SPSS file was of type
Numeric
> (not String), there would be no problem.
>
> ______________________________________________
> R-devel_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

-- 
Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



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