[R] regroup row names

[lily li]

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
>> ...
>>
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>>
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