[R] re ad.table

[Simon Pickett]

probably best just to change each variable one by one to the correct 
classification after you have read the data frame in.

variable<-as.character(variable)


----- Original Message ----- 
From: "threshold" <r.kozarski at gmail.com>
To: <r-help at r-project.org>
Sent: Friday, December 19, 2008 12:35 PM
Subject: [R] re ad.table


>
> Hi , I want to use the read.table to the following example 'data.txt' 
> format:
> a       b      c      d      e      f
> SPX LSZ 100 C 0 34.4
> SPX LSZ 100 P 0 1.3
> SPX LSZ 105 C 0 30.3
> SPX LSZ 105 P 0 1.85
> SPX LSZ 110 C 0 26.4
>
> and I want to have the columns a,b,d read as the 'character' data, a the
> remaining columns as 'numeric'. What I did was:
> read.table("data.txt",header=T,
> colClasses=c("character","character","numeric","character",
> "numeric","numeric"), but I could not get what I want, since all values 
> were
> in the 'character' format. I will apprecaite any suggestions.
> best, robert
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