1.7 Now It Is Time. . .
. . . to get your hands full of code, numerical outputs and plots. Revise the basics of
the methods, explore the code, analyse it, change it, try to apply it to your data and
interpret your results. Above all, we hope to show that doing numerical ecology in
R is fun!
Table 1.4 Several help resources in R
Action
Use
Example
Remarks
?(question mark)
Obtain information
about a function
?decostand
The package to
which the function belongs
must be active
?? (double question
mark)
Obtain information
on the basis of a
keyword
??diversity
The search is
done in all packages installed in
the computer
Type the name of a
function
Display the code of
the function
on-screen
diversity
Not all functions
can be displayed
fully; some contain compiled
code
help
(package¼"....")
Display information
on the package,
including a list of all
functions and data.
help
(package¼"ade4")
data
(package¼"...")
List the datasets
contained in a
package
data
(package¼"vegan")
http://cran.r-project.org/ Broader search than
above; access to
discussion lists
Search on the CRAN web
site: click on the “Search”
link and choose one of the
links
Outside the
R master
webserver.
http://www.rseek.org/
Seek any R function Search “line plot”
Outside the
R console
1.7 Now It Is Time. . .
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