Name variables

Foo<-30

FOO<-20

foO<-15

Display Foo

Foo
## [1] 30

Display FOO without the script.

## [1] 20

Display foO

foO
## [1] 15

Le mode d’un object est obtenu avec la fonction mode:

v<-c(1, 2, 5, 9)

Tout ensemmble

v<-c(1, 2, 5, 9)
mode (v)
## [1] "numeric"
length(v)
## [1] 4

R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

Cette partie affiche les 6 premieres lignes de la base de données cars:

head(cars)
##   speed dist
## 1     4    2
## 2     4   10
## 3     7    4
## 4     7   22
## 5     8   16
## 6     9   10

Cette partie affiche les 3 premieres lignes de la base de données cars:

head(cars, n= 3)
##   speed dist
## 1     4    2
## 2     4   10
## 3     7    4

Including Plots

You can also embed plots, for example:

plot(pressure)

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.