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[R] read.fwf and header

Gregor GORJANC

2006-10-30

Replies:

Hi!

I have data (also in attached file) in the following form:

num1 num2 num3 int1 fac1 fac2 cha1 cha2 Date POSIXt
1           1  f q  1900-01-01 1900-01-01 01:01:01
2 1.0 1316666.5 2 a g r z        1900-01-01 01:01:01
3 1.5 1188830.5 3 b h s y 1900-01-01 1900-01-01 01:01:01
4 2.0 1271846.3 4 c i t x 1900-01-01 1900-01-01 01:01:01
5 2.5 829737.4   d j u w 1900-01-01
6 3.0 1240967.3 5 e k v v 1900-01-01 1900-01-01 01:01:01
7 3.5 919684.4 6 f l w u 1900-01-01 1900-01-01 01:01:01
8 4.0 968214.6 7 g m x t 1900-01-01 1900-01-01 01:01:01
9 4.5 1232076.4 8 h n y s 1900-01-01 1900-01-01 01:01:01
10 5.0 1141273.4 9 i o z r 1900-01-01 1900-01-01 01:01:01
 5.5 988481.4 10 j   q 1900-01-01 1900-01-01 01:01:01

This is a FWF (fixed width format) file. I can not use read.table here,
because of missing values. I have tried with the following

> read.fwf(file="test.txt", widths=c(3, 4, 10, 3, 2, 2, 2, 2, 11, 20),
header=TRUE)

Error in read.table(file = FILE, header = header, sep = sep, as.is =
as.is, :
 more columns than column names

I could use:

> read.fwf(file="test.txt", widths=c(3, 4, 10, 3, 2, 2, 2, 2, 11, 20),
header=FALSE, skip=1)
 V1 V2     V3 V4 V5 V6 V7 V8       V9           V10
1  1 NA     NA 1   f q   1900-01-01 1900-01-01 01:01:01
2  2 1.0 1316666.5 2 a g r z         1900-01-01 01:01:01
3  3 1.5 1188830.5 3 b h s y 1900-01-01 1900-01-01 01:01:01
4  4 2.0 1271846.3 4 c i t x 1900-01-01 1900-01-01 01:01:01
5  5 2.5 829737.4 NA d j u w 1900-01-01
6  6 3.0 1240967.3 5 e k v v 1900-01-01 1900-01-01 01:01:01
7  7 3.5 919684.4 6 f l w u 1900-01-01 1900-01-01 01:01:01
8  8 4.0 968214.6 7 g m x t 1900-01-01 1900-01-01 01:01:01
9  9 4.5 1232076.4 8 h n y s 1900-01-01 1900-01-01 01:01:01
10 10 5.0 1141273.4 9 i o z r 1900-01-01 1900-01-01 01:01:01
11 NA 5.5 988481.4 10 j     q 1900-01-01 1900-01-01 01:01:01

Does anyone have a clue, how to get above result with header?

Thanks!

--
Lep pozdrav / With regards,
  Gregor Gorjanc
----------------------------------------------------------------------
University of Ljubljana   PhD student
Biotechnical Faculty
Zootechnical Department   URI: http://www.bfro.uni-lj.si/MR/ggorjan
Groblje 3             mail: gregor.gorjanc <at> bfro.uni-lj.si

SI-1230 Domzale         tel: +386 (0)1 72 17 861
Slovenia, Europe        fax: +386 (0)1 72 17 888

----------------------------------------------------------------------
"One must learn by doing the thing; for though you think you know it,
you have no certainty until you try." Sophocles ~ 450 B.C.

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