Frank E Harrell Jr
f.harrell at vanderbilt.edu
Wed Sep 13 17:49:01 CEST 2006
Wensui Liu wrote:
> For your 1st question, you can write query against the tables in DB using RODBC.
> Being a SAS programmer, I have to say that reporting function of R is
> not as good as that of SAS.
I beg to differ. See for example
> On 9/13/06, Thorsten Muehge <MUEHGE at de.ibm.com> wrote:
>> Hello Colleagues,
>> I programmed in SAS for 3 years and would like to switch to a not so costly
>> software product.
>> Hence I started to evaluate R, and my first test look promising.
>> However I have some question:
>> 1. Is it possible to query R files by SQL internally on data frames (not on
>> a database) and how is the syntax (I have the RODBC package installed).
>> I would like to extract year, Quarter, week, from a date column in a data
>> frame (see attachment). After this I want to attach the column to the
>> original data frame.
>> How do I do this in R?
>> Dr .Th.Mühge,
>> Procurement Technology Center
>> IBM Deutschland GmbH, Hechtsheimer Str.2, D-55131 Mainz
>> Phone: xx49-(0)6131-84-2416
>> Mobile: xx49-(0)15117457978
>> e-mail: muehge at de.ibm.com
>> (See attached file: Debug1.csv)
>> R-help at stat.math.ethz.ch mailing list
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University
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