[R] possible reason for merge not working

[jim holtman]

What you "see" and what the data really is may be two different
things.  You should have at least enclosed an 'str' of the two data
frames; even better would be a subset of the data using 'dput'.  Most
likely your problem is that your data is not what you 'expect' it to
be.

On Mon, Aug 1, 2011 at 12:17 PM, world peace <buysellrentoffer at gmail.com> wrote:
> Hi Guys,
>
> working on a "merge" for 2 data frames.
>
> Using the command:
>
> x <- merge(annotatedData, UCSCgenes, by.x="names",
> by.y="Ensembl.Gene.ID", all.x=TRUE)
>
> names and Ensembl.Gene.ID are columns with similar elements from the x
> and y data frames.
>
> annotatedData has 8909 entries, so has x(as expected). x has columns
> for UCSCgenes, but there is no data in them, all n/a, as if no match
> exists.
> This is not true as I can manually see and find many similarities
> between the names and UCSCgenes columns.
>
> I am wondering if there is any syntax error, or logical.
>
> comments appreciated.
>
> Thanks
> Dan
>
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?