[R] Strange column shifting with read.table
jholtman at gmail.com
Sun Aug 2 23:22:13 CEST 2009
try 'row.names=FALSE' in the write.table.
On Sun, Aug 2, 2009 at 5:10 PM, Noah Silverman<noah at smartmediacorp.com> wrote:
> I am reading in a dataframe from a CSV file. It has 70 columns. I do
> not have any kind of unique "row id".
> rawdata <- read.table("r_work/train_data.csv", header=T, sep=",",
> When training an svm, I keep getting an error
> So, as an experiment, I wrote the data back out to a new file so that I
> could see what the svm function sees.
> write.table(rawdata, file="r_work/output_data.csv", quote=FALSE, sep=",")
> It appears as if R has added a column for me with id numbers for each
> row. That would be fine, except that R SHIFTS ALL MY COLUMN LABELS OVER
> ONE. That causes several problems:
> 1) The header names are now wrong for each column
> 2) My last column has no label
> 3) The SVM complains about the unlabeled column
> Would someone please help me sort this out.
> [[alternative HTML version deleted]]
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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