[R] Strange column shifting with read.table

[jim holtman]

try 'row.names=FALSE' in the write.table.

On Sun, Aug 2, 2009 at 5:10 PM, Noah Silverman<noah at smartmediacorp.com> wrote:
> Hi,
>
> 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=",",
> na.strings=0)
>
> 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.
>
> Thanks!
>
> -N
>
>
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>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?