Multiply and replace values in data frame according to condition in R

Question

I\'m new to R and I\'ve been trying to multiply and replace certain values in my data frame with no success. Basically, what I want to do is that when a value from my df (any co

Answer 1

An option would be to create a logical matrix based on the expression. Extract the values from the dataset, multiply by 10 and update the results

i1 <- df1 >0 & df1 < 1
df1[i1] <- df1[i1] * 10

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Or with replace if we don't want to replace the initial object

df2 <- replace(df1, i1, df1[i1] * 10)

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A tidyverse option with some additional checks for type of the column would be

 library(dplyr)
 df1 %>%
    mutate_if(is.numeric, ~ case_when(between(., 0, 1) ~ . * 10, TRUE ~ .))