R - Help

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How to get help in R

How to

The reference card

The reference card gives a good way to have all important functions on one place.

Get the documentation of one function

help(commandName, package = 'PackageName')
# or

Case sensitive


Will return as message:

No documentation for ‘describeby’ in specified packages and libraries:
you could try ‘??describeby’

You must type


Search the help documentation

help.search() or the special character ?? for finding help pages on a topic


Get the help on one package

Get the help on one package


Get the documentation

  • help.start() opens the HTML version of the R help pages
> help.start()
starting httpd help server ... done
If nothing happens, you should open
'' yourself

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