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New posts in r-faq

Drop unused factor levels in a subsetted data frame

r dataframe r-factor r-faq

Test if a vector contains a given element

r vector r-faq

The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or dataframe

r list dataframe extract r-faq

How to unload a package without restarting R

r package r-faq

What is the difference between require() and library()?

r package r-faq

How can I view the source code for a function?

r function r-faq

How should I deal with "package 'xxx' is not available (for R version x.y.z)" warning?

r installation repository package r-faq

Plot two graphs in same plot in R

r plot ggplot2 r-faq

How to convert a factor to integer\numeric without loss of information?

r casting r-faq

What are the differences between "=" and "<-" assignment operators in R?

r assignment-operator r-faq

Drop data frame columns by name

r dataframe r-faq

Remove rows with all or some NAs (missing values) in data.frame

r dataframe filter missing-data r-faq

Grouping functions (tapply, by, aggregate) and the *apply family

r lapply sapply tapply r-faq

How to join (merge) data frames (inner, outer, left, right)

r r-faq

Sort (order) data frame rows by multiple columns

r sorting dataframe r-faq

How to make a great R reproducible example

r r-faq
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