Tell me how this works out for you. I think R is seeing your "newXaxis"
variable as a character variable because there is some non-numeric string
in there, then it converts to factor. Try setting stringsAsFactors=FALSE
in the read.csv and see if it is then read as character. If it is, try
your command again:
mydata[,"newXaxis"]<-as.numeric(mydata[,"newXaxis"])
I don't know if this will work. Just guessing.
Mike
On Fri, 1 May 2009, phoebe kong wrote:
Hi All,
I have problem about the factor features.
I read in a .cvs file, a column which is supposed to be numeric, but it
becomes factor level data after reading in.
mydata[,"newXaxis"]
[1] 0 0.430010601 11.23198508 25.00940297 37.75338045
45.98289639
[7] 48.92328133 52.51142822 61.12359751 63.85832121 70.98927949
77.16550181
[13] 97.73545713 113.6588007 118.6588007 129.9635717 151.8944844
178.7997437
[19] 206.45806 248.5916724 309.2463405 373.436891 441.0136089
508.6003268
[25] 586.8717683 670.5198381 760.8728108 854.0728565 948.6242311
1048.159042
[31] 1150.177895 1257.016622 1262.016622 1273.775731 1295.941555
1331.142905
[37] 1368.605796 1419.096727 1478.299769 1557.275945 1636.262122
1641.262122
[43] 1642.586431
44 Levels: 0 0.430010601 10030.11259 10096.32795 10167.4591 ... newXaxis
I tried to convert this column to numeric using command:
mydata[,"newXaxis"]<-as.numeric(mydata[,"newXaxis"])
However, it turned out a batch of integer numbers.
as.numeric(mydata[,"newXaxis"])
[1] 1 2 31 202 230 245 250 256 271 276 292 307 337 33 46 82 124
186
[19] 191 201 213 228 240 253 266 280 305 317 332 15 39 64 65 71 80
87
[37] 92 97 112
Does anyone know how to remove the factor and remain the actual numeric
data?
Thanks a lot!
Phoebe
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Please note that I am using a new email address.
My old email address @taxa.epi.umn.edu, will stop working
because that old computer is being retired.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
