[R] Performing same steps on multiple dataframes using a loop - vijay

Bert Gunter gunter.berton at gene.com
Sat Jan 18 08:11:59 CET 2014

Is this homework? Most of us object to doing homework here.

If not, have you gone through any R tutorials? This looks like pretty
basic stuff, and one has to wonder if you can't do this, why are you
using R at all?


Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374

"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Welch

On Fri, Jan 17, 2014 at 8:46 PM, Vijay <vijaychowdhari at gmail.com> wrote:
> I have three data frames df.1, df.2 and df.3. All have the same structure I.e here is df.1
> Name                    network             speed
> Atlanta_Ga.           LTE.                    10
> Hartford_CT.          HSPA.                  4
> Seattle_WA.           LTE.                     12
> I want to perform a couple of steps on each data frame and store the transformed dataframes as df.1cleaned, df.2cleaned etc......
> Here are the steps to perform.
> 1.Create a new column named state, given by the last two letters of the name field
> 2. Only keep rows where network is HSPA
> 3. Multiple the speed column by 1000
> So df.1cleaned would look like
> Name                Network.       Speed.     State
> Hartford_CT.     HSPA.           10000.      CT
> Can someone help me come up with a loop or a function that loops through all dataframes and produces all three dataframes
> Thanks
> Vijay
> Sent from my iPad
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