From mdowle at mdowle.plus.com  Thu Mar 15 22:48:28 2012
From: mdowle at mdowle.plus.com (Matthew Dowle)
Date: Thu, 15 Mar 2012 21:48:28 -0000
Subject: [Rd] merge bug fix in R 2.15.0
In-Reply-To: <faaeae7eaeb52d6007d62285a676364c.squirrel@webmail.plus.net>
References: <faaeae7eaeb52d6007d62285a676364c.squirrel@webmail.plus.net>
Message-ID: <ec32103ec8b4497fb9028095a195129c.squirrel@webmail.plus.net>


Anyone?

> Is it intended that the first suffix can no longer be blank? Seems to be
> caused by a bug fix to merge in R 2.15.0.
>
> $Rdevel --vanilla
> DF1 = data.frame(a=1:3,b=4:6)
> DF2 = data.frame(a=1:3,b=7:9)
> merge(DF1,DF2,by="a",suffixes=c("",".1"))
> Error in merge.data.frame(DF1, DF2, by = "a", suffixes = c("", ".1")) :
>   there is already a column named ?b?
>
> $R --vanilla
> R version 2.14.2 (2012-02-29)
>> DF1 = data.frame(a=1:3,b=4:6)
>> DF2 = data.frame(a=1:3,b=7:9)
>> merge(DF1,DF2,by="a",suffixes=c("",".1"))
>   a b b.1
> 1 1 4   7
> 2 2 5   8
> 3 3 6   9
>>
>
> Matthew
>



[Rd] merge bug fix in R 2.15.0
Matthew Dowle