R help - Aug 2011 - need your consult

Dear Sir/Madam


Hi. I am a general paediatrician, and I have read *some* chapters of the
following books(1-3). I think SPSS lacks some features that may be important
in data analysis (for example: interval of correlation coefficient in
bivariate normal distribution, PRESS, and MSPR in cross-validation). I am
thinking about changing SPSS to R:


   1.    SPSS is very expensive for me to update.
   2.  My colleagues use SPSS, but I think data can be exchanged between
   SPSS, and R, is this true?
   3.  I have not worked with R so much yet.



Would you mind do me a favour about this issue, please?


Kind regards


Mehrshad


1.         Norusis MJ. SPSS 16.0 guide to data analysis. Upper Saddle River:
Prentice Hall Inc.; 2008.

2.         Norusis MJ. SPSS 16.0 statistical procedures companion. Upper
Saddle River: Prentice Hall Inc.; 2008.

3.         Kutner M, Nachtsheim C, Neter J, Li W. Applied linear statistical
models. 5th ed. New York: McGraw-Hill; 2005.

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On Tue, Aug 09, 2011 at 02:28:22AM -0700, Mehrshad Koleini
wrote:
> Dear Sir/Madam
> 
> 
> Hi. I am a general paediatrician, and I have read *some* chapters of the
> following books(1-3). I think SPSS lacks some features that may be
important
> in data analysis (for example: interval of correlation coefficient in
> bivariate normal distribution, PRESS, and MSPR in cross-validation). I am
> thinking about changing SPSS to R:
> 
> 
>    1.    SPSS is very expensive for me to update.
>    2.  My colleagues use SPSS, but I think data can be exchanged between
>    SPSS, and R, is this true?
Yes, but the data must be converted, which it not an entirely seamless
process, there might be quirks to be handled manually.

To import data from an SPSS file to R, read
http://cran.r-project.org/doc/manuals/R-data.html and
http://cran.r-project.org/web/packages/foreign/foreign.pdf

Basically, it can be as simple as

library(foreign)
foo <- read.spss(file = "data_set.sav")

now, your data is in object "foo", which can be inspected with the
function str()

str(foo)

--
Hans Ekbrand
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