[R] help with read.csv() for files with different number of columns
Fix Ace
acefix at rocketmail.com
Sun Aug 27 22:25:39 CEST 2017
Dear R community,
I have a text file (test.txt) with different number of columns:
0610007P14Rik%%% Tcf19 Gtf2i 0610010O12Rik%%% Ivns1abp Etv6 1100001G20Rik%%% Nmi 1500015O10Rik%%% Foxi1 Ascl3 Sirt3 1700003E16Rik%%% Ascl2 Ifnar2 1700028J19Rik%%% Musk Nfe2l3 1810011O10Rik%%% Ppp1r13b Bpnt1 Cdkn2c Foxc1 Sox10 Smarca2 1810019D21Rik%%% Asb8 1810037I17Rik%%% Zfp612 1810055G02Rik%%% Nkx2-3 Maged1 Runx1 Ugp2 Elk4 Spdef Tcf19 Isl2 Gtf2i Ctnnbl1 Tcea3 Ank2 Zfp612 Creb3l1 Nupr1 3632451O06Rik Creb3l4 Lass6
I wold like to read it into R using
> test=read.csv("test.txt",sep="\t",header=FALSE)
However, when I check the r object "test", I found that all the rows have 5 columns:
> test V1 V2 V3 V4 V51 0610007P14Rik%%% Tcf19 Gtf2i 2 0610010O12Rik%%% Ivns1abp Etv6 3 1100001G20Rik%%% Nmi 4 1500015O10Rik%%% Foxi1 Ascl3 Sirt3 5 1700003E16Rik%%% Ascl2 Ifnar2 6 1700028J19Rik%%% Musk Nfe2l3 7 1810011O10Rik%%% Ppp1r13b Bpnt1 Cdkn2c Foxc18 Sox10 Smarca2 9 1810019D21Rik%%% Asb8 10 1810037I17Rik%%% Zfp612 11 1810055G02Rik%%% Nkx2-3 Maged1 Runx1 Ugp212 Elk4 Spdef Tcf19 Isl2 Gtf2i13 Ctnnbl1 Tcea3 Ank2 Zfp612 Creb3l114 Nupr1 3632451O06Rik Creb3l4 Lass6
Basically it breaks some rows into more than one rows. For example, row 7 in the original record becomes two rows. Looks like the "test" always has 5 columns.
How does this happen? How should I fix it to make one record into one two in R object?
Thank you very much!
Ace
[[alternative HTML version deleted]]
More information about the R-help
mailing list