# [R] Create a categorical variable using the deciles of data

Rui Barradas ru|pb@rr@d@@ @end|ng |rom @@po@pt
Tue Jun 14 17:09:33 CEST 2022

```Hello,

Inline.

Às 14:49 de 14/06/2022, Ebert,Timothy Aaron escreveu:
> A problem in R is that there are several dozen ways to do any of these basic activities. I used the approach that I could get to work the fastest and tried to make it somewhat general. I do not know functions like ?pretty that Rui used, nor ?quantile or ?cut. It is a difficulty in learning R where the internet or sites like this one are the "teacher."

Yes, that's unfortunately true.

In this particular case I've learned about pretty() because I used to
use hist(., plot=FALSE) to get pretty breakpoints. And hist's
documentation says it uses pretty().

There are plenty of books, but they too take one approach to solve a
problem rather than "here is a problem" and "these are all possible
solutions." I appreciate seeing alternative solutions.

This thread is a good example of a "teacher" with several solutions,
there are many more threads like this.

>
> Tim
>
> -----Original Message-----
> From: R-help <r-help-bounces using r-project.org> On Behalf Of Richard O'Keefe
> Sent: Tuesday, June 14, 2022 9:08 AM
> To: anteneh asmare <hanatezera using gmail.com>
> Cc: R Project Help <r-help using r-project.org>
> Subject: Re: [R] Create a categorical variable using the deciles of data
>
> [External Email]
>
> Can you explain why you are not using
> ?quantile
> to find the deciles then
> ?cut
> to construct the factor?
> What have I misunderstood?
>
> On Tue, 14 Jun 2022 at 23:29, anteneh asmare <hanatezera using gmail.com> wrote:
>
>> I want Create a categorical variable using the deciles of the
>> following data frame to divide the individuals into 10 groups equally.
>> I try the following codes
>> data_catigocal<-data.frame(c(1:50000))
>> # create categorical vector using deciles group_vector <-
>>
>> c('0-10','11-20','21-30','31-40','41-50','51-60','61-70','71-80','81-9
>> 0','91-100') # Add categorical variable to the data_catigocal
>> data_catigocal\$decile <- factor(group_vector) # print data frame
>> data_catigocal
>>
>> can any one help me with the r code
>> Kind regards,
>> Hana
>>
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