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Statistical Programming with R
You can access the course materials quickly from
Some guidelines
and build the foundation for a succesfull scripting career
R is a language and environment for statistical computing and for graphics
GNU project (100% free software)
Managed by the R Foundation for Statistical Computing, Vienna, Austria.
Community-driven
Based on the object-oriented language S (1975)
R works with objects that consist of elements. The smallest elements are numbers and characters.
Everything that is published on the Comprehensive R
Archive Network (CRAN) and is aimed at R
users, must be accompanied by a help file.
If you know the name of the function that performs an operation, e.g. anova()
, then you just type ?anova
or help(anova)
in the console.
If you do not know the name of the function: type ??
followed by your search criterion. For example ??anova
returns a list of all help pages that contain the word ‘anova’
Alternatively, the internet will tell you almost everything you’d like to know and sites such as http://www.stackoverflow.com and http://www.stackexchange.com, as well as Google
can be of tremendous help.
R
related issues; use ‘R:’ as a prefix in your search termAssigning things in R is very straightforward:
<-
For example, if you assign the value 100
(an element) to object a
, you would type
a <- 100
Calling things in R is also very straightforward:
For example, we assigned the value 100
to object a
. To call object a
, we would type
a
## [1] 100
This is why we use R-Studio.
In a few moments,