[R] regroup row names

Ulrik Stervbo ulrik.stervbo at gmail.com
Sun Jul 3 20:41:46 CEST 2016


Hi Lily,

My suggestion should remove the underscore and everything after it, leaving
just aClim and bClim in the ID column.

Best
Ulrik

On Sun, 3 Jul 2016, 20:34 lily li, <chocold12 at gmail.com> wrote:

> Hi Ulrik,
>
> Thanks. This is for one group, but how to do for several groups? I tried
> gsub(c(),c(),df$ID), but it does not work.
>
>
> On Sun, Jul 3, 2016 at 12:24 PM, Ulrik Stervbo <ulrik.stervbo at gmail.com>
> wrote:
>
>> Hi Lily,
>>
>> you can use gsub:
>>
>> df$ID <- gsub("_.*", "", df$ID)
>>
>> HTH
>> Ulrik
>>
>> On Sun, 3 Jul 2016 at 20:16 lily li <chocold12 at gmail.com> wrote:
>>
>>> I have a problem in changing row names in a dataframe in R. The first
>>> column is ID, such as aClim_st02, aClim_st03, aClim_st 05, bClim_st01,
>>> bClim_st02, etc. How to rename the names, so that aClim_ all grouped to
>>> aClim, while bClim_ all grouped to bClim? Thanks for your help.
>>> df
>>>
>>> ID                    temp   precip   LW   SW
>>> aClim_st02
>>> aClim_st03
>>> aClim_st05
>>> bClim_st01
>>> bClim_st02
>>> ...
>>>
>>>         [[alternative HTML version deleted]]
>>>
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>

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