On Fri, Jun 1, 2012 at 11:23 AM, Brigid Mooney wrote:
> Hopefully this is an easy problem...
>
> I'm trying to add a partitioned rank column to a data frame where the
> rank is calculated separately across a partition by categories, the
> way you could easily do in SQL. I found this solution in t
4 PM
Subject: Re: [R] Add rank column to data frame as in SQL...
Sorry, I meant to put that it didn't work for "GM", not "Toyota".
> DF[DF$Company=="GM",]
Company Person Salary rank
1 GM A 7067.905 4
3 GM C 31627.171 8
> 5 GM E 66200.5087
> 7 GM G 91287.5923
> 10 GM J 33239.467 6
> 13 GM M 47854.5255
> 14 GM N 76631.0672
> 16 GM P 87532.1331
>
>
>
>
> - Original Message -
> From: Brigid M
4 5
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
> Behalf
> Of Brigid Mooney
> Sent: Friday, June 01, 2012 5:23 PM
> To: r-help@r-project.org
> Subject:
239.467 6
13 GM M 47854.525 5
14 GM N 76631.067 2
16 GM P 87532.133 1
- Original Message -
From: Brigid Mooney
To: r-help@r-project.org
Cc:
Sent: Friday, June 1, 2012 11:23 AM
Subject: [R] Add rank column to data frame as in SQL...
Hopefully thi
Hopefully this is an easy problem...
I'm trying to add a partitioned rank column to a data frame where the
rank is calculated separately across a partition by categories, the
way you could easily do in SQL. I found this solution in the archives
that looked like it might work:
http://tolstoy.newc
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