python (65.1k questions)

javascript (44.2k questions)

reactjs (22.7k questions)

java (20.8k questions)

c# (17.4k questions)

html (16.3k questions)

r (13.7k questions)

android (12.9k questions)

Questions - recode

is there a simple way to recode levels of a factor variable so that levels occuring below a given frequency are recoded to "other"

theshold <- c(0.001, 0.5, 0.1) df$a df$b df$c - Recode levels based on level frequency of less than first threshold df$x df$y df$x - Recode levels based on level frequency of less than second thres...
test-img

Damien Conway

r

recode

levels

Votes: 0

Answers: 3

Latest Answer

You're looking for fct_lump_prop() from forcats. library(forcats) library(dplyr) dat <- data.frame(base = c("A", "A", "A", "B", &...
test-img

Andrea M

Recoding with and/or condition across multiple columns

I want to create a new variable (new_var) and condition it off of multiple columns: class == "yes" & score1:score5 >80. I have code that works below but is there a cleaner way to do t...
test-img

SaraFormula

if-statement

recode

Votes: 0

Answers: 1

Latest Answer

Well you could or together the conditions: class <- class %>% mutate(new_var = ifelse( attend == "yes" & (score1 > 80 | score2 > 80 | score3 > 80 | score4 > 80 | ...
test-img

Tim Biegeleisen

How to recode a new date variable and select the lowest date out of four date columns in R

Sample data stack_dat <- structure(list(bio_drug_stop_date = structure(c(15376, NA, 15602, NA, 15550, NA, 15350, 15363, 15418, 16157), class = "Date"), follow_up_2_years = s...
test-img

Pashtun

r

date

if-statement

recode

Votes: 0

Answers: 1

Latest Answer

We may use pmin with coalesce - coalesce the 'bio_drug_stop_date' with the min (using pmin) dates from other column for each row library(dplyr) library(purrr) stack_dat %>% mutate(treatment_end =...
test-img

akrun

Recode a variable within the mids object of the mice library in R

The following dataset is available data <- structure(list(asdas_6month = c(23.1222666868239, 25.4056847196073, 25.9886630231065, NA, 26.9450864282904, 15.1832953552198, 22.1618055512694, NA, 24.1...
test-img

Pashtun

r

imputation

recode

r-mice

Votes: 0

Answers: 1

Latest Answer

To do a calculation on the imputed datasets, we can use complete to get a dataframe of the imputed data. Then, we can use mutate as normal to make the calculation. Then, you can use as.mids to turn it...
test-img

AndrewGB

Posts

Questions

Blogs

Jobs