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

Including Plots

creer une carte You can also embed plots, for example:

la longeur d’une chaine de caractere:

V1<-"modelisation"
v2<-c("m","o","d","e","l","i","s","a","t","i","o","n")
length(V1)
## [1] 1
length(v2)
## [1] 12
nchar(V1)
## [1] 12
nchar(v2)
##  [1] 1 1 1 1 1 1 1 1 1 1 1 1
x <- c(0:10, 50)
xm <- mean(x)
c(xm, mean(x, trim = 0.10))
## [1] 8.75 5.50
-Inf*0
## [1] NaN

cette partie est consacre au vecteur

x<-c(1,4,9)
y<-c(x,2,3)

affichage de y

## [1] 1 4 9 2 3

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