why you don't use read.csv2 (you save your file.csv) and you write read.csv2("path file",sep=",")
hope this helps


________________________________
De : Mark Breman <breman.mark@gmail.com>
À : r-help@stat.math.ethz.ch
Envoyé le : Mercredi, 12 Août 2009, 10h46mn 43s
Objet : [R] Zoo and numeric data

Hi,
I have a csv file with different datatypes:

2009-01-01, character1, 10, 20.1
2009-01-02, character2, 11, 21.1

(I have attached the file to this post)

I read this file with read.zoo as I want a zoo/xts timeseries:
> t = read.zoo("./data.txt", sep=",", dec = ".", header=FALSE)

If I look at the zoo data all integer/numeric columns are read as
character:
> str(t)
‘zoo’ series from 2009-01-01 to 2009-01-02
  Data: chr [1:2, 1:3] " character1" " character2" "10" "11" "20.1" "21.1"
- attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:3] "V2" "V3" "V4"
  Index: Class 'Date'  num [1:2] 14245 14246

So I try the colClasses parameter with read.zoo but it looks like this does
not make any difference:
> t1 = read.zoo("./data.txt", sep=",", dec = ".", header=FALSE,
colClasses=c("Date", "character", "integer", "numeric"))
> str(t1)
‘zoo’ series from 2009-01-01 to 2009-01-02
  Data: chr [1:2, 1:3] " character1" " character2" "10" "11" "20.1" "21.1"
- attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:3] "V2" "V3" "V4"
  Index: Class 'Date'  num [1:2] 14245 14246

Why does read.zoo ignores the colClasses parameter and how do I get
integer/numeric data into my zoo series?

Regards,

-Mark-



      
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