Message-ID: <097F022D-5B53-4E0A-B771-958A89F2CDDE@comcast.net>
Date: 2009-04-16T15:10:26Z
From: David Winsemius
Subject: Help- extracting values
In-Reply-To: <172106.73517.qm@web28406.mail.ukl.yahoo.com>
On Apr 16, 2009, at 10:45 AM, Amit Patel wrote:
>
> I have csv files imported in r each with 2 columns and many many
> rows. I have sorted the data in them but want to extract some values.
>
> The first column is an ID
> The second is a p-value ( now sorted in increasing order with NA's
> last)
> I want to extract the rows with a p-value of less than 0.05)
>
> What commands would help
> the table is called AnovaSort with column headings MCI & p-value
"p-value" is a rather unlikely R name for a column since it is illegal
in R. Using a "table" is also unlikely, so let's assume that once you
have read it into a dataframe, that it's named p_value.
AnovaSort[AnovaSort$p_value < 0.05]
David Winsemius, MD
Heritage Laboratories
West Hartford, CT