[R-SIG-Mac] RODBC

[Marc Schwartz]

Ivan,

A quick heads up.

I had a brief offlist exchange with Prof. Ripley, during which he noted two things:

1. His MS Office 2008 installation on OSX does not have an ODBC driver. So it would seem that it is not available from MS, which would make sense with Actual Tech selling one. 

2. The Actual Tech driver is read only, meaning that you can read from an Excel file, but not write to one. This is also noted in Section 7 of vignette("RODBC").  After going back to the Actual Tech web site on the page I listed, they do mention this in the text on the page, where it indicates the for Excel, only 'select' statements are supported and for Access, only 'select' and 'join' statements. 'insert' and 'update' queries are not supported.

Thus, the Actual Tech product and indeed, [R]ODBC will in fact, not do any of what you want here.

Marc

On Mar 6, 2010, at 2:01 PM, Ivan Calandra wrote:

> Thanks a lot Marc for your detailed answer.
> With this information, I'll find what I can do with my data.
> Thanks again to all of you
> Have a nice weekend
> Ivan
> 
> 
> Le 6 mars 2010 à 20:14, Marc Schwartz a écrit :
> 
>> Ivan,
>> 
>> If you wanted to evaluate the ODBC route, the Actual Tech driver is available here:
>> 
>> http://www.actualtech.com/product_access.php
>> 
>> It is $29.95 U.S.
>> 
>> In hindsight, as I don't use MS Office, I don't know if their OSX offering in fact has an ODBC driver included. Someone else here may know that.
>> 
>> FWIW, I use Actual's Oracle ODBC driver and have been pleased with it. 
>> 
>> I should note that WriteXLS does not facilitate appending new worksheets to an existing file or new data to an existing worksheet. It creates a new .XLS file when used, overwriting an existing file of the same if it already exists. The intent is to provide the means to easily dump one or more data frames to an Excel file as a means to make data from R portable to others where an .XLS file makes sense as the vehicle, as an alternative to CSV files, etc. So the intent would be to have all of your data frames created and then use WriteXLS() to export them at once. 
>> 
>> I had this need when I was using Linux (to send data to clients on Windows) and so needed to find the way to accomplish this when Excel itself would not be available. Thus Perl was used, which makes this common approach available on Linux, OSX and Windows. 
>> 
>> Regards,
>> 
>> Marc
>> 
>> On Mar 6, 2010, at 12:34 PM, Ivan Calandra wrote:
>> 
>>> How am I supposed to do that? 
>>> 
>>> Marc Schwarz advised me to use the package WriteXLS instead.
>>> 
>>> Thanks for your help already
>>> regards,
>>> Ivan
>>> 
>>> Le 6 mars 2010 à 18:37, Simon Urbanek a écrit :
>>> 
>>>> 
>>>> On Mar 6, 2010, at 12:17 PM, Ivan Calandra wrote:
>>>> 
>>>>> Dear Mac users,
>>>>> 
>>>>> Up to now, I've run R on Windows and I have some problems using my scripts on Mac OS X 10.6, R.app GUI 1.31 (5537 Leopard build 64-bit).
>>>>> 
>>>>> Here is the code I use to export a data.frame to an *.xls file:
>>>>> xlsFile <- odbcConnectExcel("test.xls", readOnly=F)
>>>>> sqlSave(xlsFile, test, tablename=test, rownames=F, addPK=T, append=F)
>>>>> odbcCloseAll()
>>>>> 
>>>>> However, the function odbcConnectExcel() doesn't work on Mac.
>>>>> 
>>>> 
>>>> Have you installed the necessary ODBC drivers and registered them?
>>>> 
>>>> Cheers,
>>>> Simon
>>>> 
>>>> 
>>>>> Could you help me transposing this code?
>>>>> 
>>>>> I don't think some sample data would be necessary, but let me know if you would like to.
>>>>> 
>>>>> Thanks in advance
>>>>> Regards,
>>>>> Ivan
>>>>> 
>>>>> --
>>>>> Ivan CALANDRA
>>>>> PhD Student
>>>>> University of Hamburg
>>>>> Biozentrum Grindel und Zoologisches Museum
>>>>> Abt. Säugetiere
>>>>> Martin-Luther-King-Platz 3
>>>>> D-20146 Hamburg, GERMANY
>>>>> +49(0)40 42838 6231
>>>>> ivan.calandra at uni-hamburg.de
>>>>> 
>>>>> **********
>>>>> http://www.for771.uni-bonn.de
>>>>> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 	[[alternative HTML version deleted]]
>>>>> 
>>>>> _______________________________________________
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>>>> 
>>> 
>>> 
>>> 
>>> --
>>> Ivan CALANDRA
>>> PhD Student
>>> University of Hamburg
>>> Biozentrum Grindel und Zoologisches Institut und Museum
>>> Martin-Luther-King-Platz 3
>>> D-20146 Hamburg, GERMANY
>>> +49(0)40 42838 6231
>>> ivan.calandra at uni-hamburg.de
>>> 
>>> **********
>>> http://www.for771.uni-bonn.de
>>> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
>>> 
>>> _______________________________________________
>>> R-SIG-Mac mailing list
>>> R-SIG-Mac at stat.math.ethz.ch
>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>> 
> 
> 
> 
> --
> Ivan CALANDRA
> PhD Student
> University of Hamburg
> Biozentrum Grindel und Zoologisches Institut und Museum
> Martin-Luther-King-Platz 3
> D-20146 Hamburg, GERMANY
> +49(0)40 42838 6231
> ivan.calandra at uni-hamburg.de
> 
> **********
> http://www.for771.uni-bonn.de
> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
> 
> 
> 
> 
>