Park

Park has asked 2 questions and find answers to 26 problems.

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Park questions

How to extract unique letters among word of consecutive letters?

Park answers

Detect index based on a condition
Keep time zone information when converting POSIX object to string [duplicate]
Pivot wider and summarise whether level exists
How to get original value after applying scale()?
Creating a ggplot where the color of point/line is dependent on the value in another column? Multiple color categories
Check if the value exists in any other columns with Tidyverse
How to rename columns in R with dplyr using a character object?
Create sequence of date on every last day of month
Keep only the second observation per group in R
Keeping 2 digits after decimal without rounding off [duplicate]