Re: [R] how to specify modes of certain fields in read.table

From: jim holtman <jholtman_at_gmail.com>
Date: Tue, 12 Feb 2008 17:48:14 -0500

If you want to use colClasses, then do:

read.table(...., colClasses=rep('numeric', 50))

On Feb 12, 2008 5:40 PM, Weidong Gu <wgu_at_uab.edu> wrote:

> I have a data file with 50 columns. Among them, there are two
> coordinates, X and Y
>
> X
>
> Y
>
> 641673.78807
>
> 3607080.78438
>
> 641436.56207
>
> 3607108.30543
>
> 641165.28042
>
> 3607136.82957
>
> 640879.58373
>
> 3607116.20568
>
>
>
> When I use read.table, it rounds X and Y to the maximal 8 decimal number
> as.
>
>
>
> 641673.8 3607081
>
> 641436.6 3607108
>
> 641165.3 3607137
>
> 640879.6 3607116
>
> 640683.5 3607105
>
>
>
> My question is how to specify these two columns in read.table. Maybe
> colClasses helps but I have 50 columns...
>
>
>
> Thanks
>
>
>
> Weidong Gu,
>
> Department of Medicine
> University of Alabama, Birmingham
> 1900 University Blvd., Birmingham, Alabama 35294
> Email: wgu_at_uab.edu
> PH: (205)-975-9053
>
>
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

	[[alternative HTML version deleted]]

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Received on Tue 12 Feb 2008 - 23:21:28 GMT

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