[R] advice?

[David Winsemius]

On May 3, 2010, at 9:48 PM, Daniel Malter wrote:

> Hi, on the one hand, you write "fairly large," on the other hand,  
> you write
> "should be readable by anything." The warnings indicate that you are  
> plain
> out of memory at some point. Not too surprising, given that your  
> dataset has
> about 450000 rows and 720 columns. You may search the r-help files  
> first for
> how to allocate memory/how to read large files, since these  
> questions are
> asked frequently.
>
> The error, however, seems to refer to the fact that there are  
> columns with
> identical column names, which is not allowed.

row.names

>
> Daniel
>
> -------------------------
> cuncta stricte discussurus
> -------------------------
>
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org 
> ] On
> Behalf Of Carson Baughman
> Sent: Monday, May 03, 2010 6:17 PM
> To: R-help at r-project.org
> Subject: [R] advice?
>
> 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.  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
>      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)
>
>
> -- 
> Carson Baughman
> Cell: (406) 360-9254
> University of Alaska Fairbanks
> Scenarios Network for Alaska Planning
>
> 	[[alternative HTML version deleted]]
>
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
West Hartford, CT