[BioC] Read big file!

Mohamed Lajnef Mohamed.lajnef at inserm.fr
Wed Aug 12 18:00:01 CEST 2009


Dear  All,
I think it would be better to use SAS to trait  the large file.
Sean: i tried colClasse option, but the computer fail to compile
Thank you for your help
M


Vincent Carey a écrit :
> it is also possible to use a buffered reading/filtering approach.
> look carefully at scan(), readLines()
> and friends.
>
> On Wed, Aug 12, 2009 at 11:14 AM, Sean Davis<seandavi at gmail.com> wrote:
>   
>> On Wed, Aug 12, 2009 at 10:28 AM, Mohamed
>> Lajnef<Mohamed.lajnef at inserm.fr> wrote:
>>     
>>> Dear R-Users
>>>
>>> i would like to read a big file (1000 lines and 1200000 columns) with R? but
>>> this is impossible ! Does someone have a magic solution to my problem?
>>>
>>> Otherwise I try a function to read by few columns this large file ( no by
>>> lines!)?
>>>       
>> This is better posted to the R-help list, but have you tried playing
>> with colClasses from read.table()?
>>
>> Sean
>>
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>>     
>
>
>
>   



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