[R] adding a column to data frame solving the replacement problem

hoda rahmati
2016-02-24T14:38:59Z

Hi all,?

I have a data set (mydata) containing 471 variables. One of the columns looks as
below?

$ Sequence : Factor w/ 3 levels "","%Seq%gre",..: 2 2 2 2 2
2 2 2 2 2 ...?

sequence contains %Seq%gre and %Seq%tse and I extract only %Seq%tse and add it
to my variables and plot a scatterplot of mydata. I use table and the result is:
table(mydata$Sequence)?
?%Seq%gre %Seq%tse?
? ? ? ? ? 1 ? ? ? ? ? 25520 ? ? ? ? ?243744?
in the next step I ?want to add a column to my main data set (mydata) containing
only %Seq%tse, however when I use the following command there's an error
telling me:?
Error in `$<-.data.frame`(`*tmp*`, "NewColumn", value = c(3L, 3L,
3L, ?:?
? replacement has 243744 rows, data has 269265?
How can I add this column correctly to mydata??
Thanks for any help
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