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Questions tagged [recode]

Recoding refers to the process of modifying the values of dataset, matrix, or vector according to a set of rules by which input values are changed to replacement values.

Recoding refers to the process of modifying the values of dataset, matrix, or vector according to a set of rules by which input values are changed to replacement values.

624 questions
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Recode the value of a variable given the value of another one

I am using a dataset in which there is a mistake in the way the answers for a given country are coded. Let's call my first variable my.data$country_year and the second one my.data$attitude. A table of the two gives the following…
saladin1991
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Renaming Categorical/Integer Cells into Binary Variables

Renaming is a big factor in the analysis. I have a dataset like the following: dat1 <- read.table(header=TRUE, text=" ID Age Align Weat 8645 15-24 A 1 6228 15-24 B 1 …
S Das
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creating a new variable that combines several others using if else

I am using a large data.frame of health conditions and outcomes, I wish to combine 10 health conditions into a single condition, If the patient has either a, or b, c, or d, etc. then the condition would be condition one. I am trying to code it…
user9340114
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Recoding in R for items with missing data

I just started working with R and this is one of problems: I want to recode text variables from one item (column) in numeric variables. Since I had missing values, I tried to recode like this: install.packages("dplyr") library("dplyr") zdf_all <-…
Papea
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Recoding categorical variables into binary variables in the same way on multiple data sets

I built a model using binary variables to represent categorical variables. I am trying to us the same binning and recodes I used in my research environment on production data. I use pyodc to query and pull realtime data that has the same elements as…
mitch
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Group variables into vectors by grouping variable

I have a dataset containing the access logs of a website. Every step within the website is a line in the data. Now I want the pages visited by the user, grouped by session id into a vector (and these pages as character variables). This is necessary…
ItK
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Recode variable conditioning using dplyr

I am trying to recode one value in my dataframe conditioning on a second variable: recode age2 from 4 to 1 when age is 0 adm_id sex age counts age2 year rate1 rate2 1 1 0 547 1 2009 0.02387617 1.632533 1 1…
Ale
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Recoding Number to String R

I am new to R and I am trying to recode a numeric variable which is 1,2,3 to string. I have seen how to do it but I do not know why mine is not working, maybe it is because it should be from string to number? This is what I got, and thanks in…
Borja_042
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recode related values in an efficient way

I have a dataframe df with only one variable var with some related values. df <- data.frame(var = c(rep('AUS',12), rep('NZ',12), rep('ENG',7), rep('SOC',12), rep('PAK',11), rep('SRI',17), rep('IND',15))) df %>%…
Prradep
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Creating Multiple Covariates from Partial Matches of a Character Variable in R

I have a large data frame that contains an alphanumeric character variable, specifically it contains information on breed composition, from which I need to create covariates of breed fraction. The breed composition column contains over 7000…
Erin M
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applying a loop to iteratively recode variables based on a macro variable (call symput/symget)

I have a dataset that looks like this, I am going to call it data1: data1 I want to recode the values for the ss, out1 and out2 variables when dv=1 to the values within each "var" group when dv=0. The outcome dataset I want looks like this, let's…
Rosekendall
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How to recode many data frame columns with same function

I have a data frame like this: CriterionVar Var1 Var2 Var3 3 0 0 0 1 0 0 0 2 0 0 0 5 0 0 0 I want to recode the values of Var1, Var2, and Var3 based on the value of CriterionVar.…
user1757436
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Using if, else within recode

I am trying to replicate some code, but am running into trouble: data$var1 has values from 1-7 which I am trying to reduce to just 2 value in a new variable called data$var2. The code looks like this: data$var2 <- recode(data$var1, "1:3=1;…
user8394142
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Conditional recoding in R

Here is an excerpt from an R data.frame which consist of indicators. It can be seen that for some rows the indictors switch to 1 until the end of the row while others switch back to zero. [,18] [,19] [,20] [,21] [,22] [,23] [,24] [1,] …
tomka
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R: Using "otherwise" in RECODE function

I would like to recode numeric values to ordinal variable using 'car' library. However, it seems that I'm unable to use "otherwise" in my recode function. Can I know how to fix the code if I want to code any other values that are not within (0.0 to…
CHONG
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