Message-ID: <5735C3F6.7060900@gmail.com>
Date: 2016-05-13T12:09:26Z
From: Duncan Murdoch
Subject: changing factor to numbers without getting NAs
In-Reply-To: <9850584.2788372.1463140568884.JavaMail.yahoo@mail.yahoo.com>
On 13/05/2016 7:56 AM, ch.elahe via R-help wrote:
> Hi all,
> I have a df which a part of this is:
>
> TSTMax :int 213 228 227 281
> TSTMin :int 149 167 158 176
> TSTMean :Factor w/94 levels "100,2" , "104,3" , ...
> I want to change the TSTMean into numeric but by using as.numeric(as.character(df$TSTMean)) I get too many NAs.
> Is there a way to change TSTMean into numeric without those NAs?
> I want TSTMean to be at the end like:
>
> TSTMean :int 100.2 104.3 .....
You appear to have a comma as the decimal marker, so you can use
type.convert(as.character(df$TSTMean), dec = ",", as.is = TRUE) instead
of as.numeric().
A simpler approach might be to avoid getting the factor in the first
place; if you read this data using read.table, there is the dec option
to recognize a comma as the decimal separator.
Duncan Murdoch