Never mind, I found the answer to my own question. From the 2.11.0 change
log:
o write.csv[2] no longer allow 'append' to be changed: as ever,
direct calls to write.table() give more flexibility as well as
more room for error.
Jonathan
On Thu, Jul 15, 2010 at 2:01 PM, Jonathan Christensen
<dzhona...@gmail.com>wrote:
> Out of curiosity, is this a change in 2.11? I'm still runnning 2.10.1,
> ?write.csv mentions the other options being ignored, but not append. This
> might also explain why John Kane believes he has successfully used append
> with write.csv in that past.
>
> Jonathan
>
>
>
> On Thu, Jul 15, 2010 at 9:36 AM, Marc Schwartz <marc_schwa...@me.com>wrote:
>
>> On Jul 15, 2010, at 9:41 AM, Cliff Clive wrote:
>>
>> >
>> > I'm running R 2.11.0 on a 32-bit Windows XP machine. Whenever I try to
>> write
>> > a csv file with 'append' set to TRUE, I get this message: attempt to set
>> > 'append' ignored.
>> >
>> > Obviously, this is no good, since R is deleting my previously saved data
>> > files, rather than appending to them. What can I do to fix this?
>>
>>
>> Read ?write.csv more carefully:
>>
>> In the "CSV files" section:
>>
>> These wrappers are deliberately inflexible: they are designed to ensure
>> that the correct conventions are used to write a valid file. Attempts to
>> change append, col.names, sep, dec or qmethod are ignored, with a warning.
>>
>>
>> If you want to use 'append', you will need to use write.table() and adjust
>> the other arguments as you require.
>>
>> HTH,
>>
>> Marc Schwartz
>>
>> ______________________________________________
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>> PLEASE do read the posting guide
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>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
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