[R] advice?

[David Winsemius]

On May 3, 2010, at 6:16 PM, Carson Baughman wrote:

> All-
>       Thank you in advance for any help you might be able to lend.   
> Here is
> my issue.  I am trying to open a fairly large .dat file.  The file
> originally was downloaded as a GZ file but I unzipped it (with 7- 
> zip) into
> it's current 1.86 gig .dat format.  I know that the data is "just a  
> plain
> ASCII file with 720 columns and 360 rows per time step (month). It  
> should be
> readable by anything!"  There are 1272 steps.

What's a step?

>  Here is what happens when I
> try to assign the file to an object:
>
>> clds<-read.table("C:\\CRU
> Data\\TS3.0\\Cloud\\cru_ts_3_00.1901.2006.cld.dat", header = TRUE,  
> row.names
> = 1)
>       Error in read.table("C:\\CRU
> Data\\TS3.0\\Cloud\\cru_ts_3_00.1901.2006.cld.dat",  :
>       duplicate 'row.names' are not allowed

If you want to assign rownames that are different than the default  
sequential integers, you need to offer a vector of unique character  
values. Perhaps you wanted to specify row.names=NULL ?

>      In addition: There were 45 warnings (use warnings() to see them)
>> warnings()
>       1: In scan(file, what, nmax, sep, dec, quote, skip,  
> nlines,  ... :
>       Reached total allocation of 1535Mb: see help(memory.size)
>       X 25
>       26: In type.convert(data[[i]], as.is = as.is[i], dec =  
> dec,  ... :
>       Reached total allocation of 1535Mb: see help(memory.size)

Sounds like you may be in trouble with memory resources. As the  
message says, see :

help(memory.size)

>
>
> -- 
> Carson Baughman
> Cell: (406) 360-9254
> University of Alaska Fairbanks
> Scenarios Network for Alaska Planning
>
> 	[[alternative HTML version deleted]]
>
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David Winsemius, MD
West Hartford, CT