Introduction to R


TP 1

Prof. Patrick Meyer

BioSys Lab - Université de Liège

Assignations

  1. a) 6 6 6
    b) 3 2 2
    c) 6 6 6

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    d) 6 2 2
    e) -4 -4 1
    f) 16 6 1

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  2. save <- a
a <- b
b <- save

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Functions

  1. Euros to Belgian francs conversion:

  2. nextnextFibonacci computation:

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  3. bmi <- function(weight,height) {
weight/(height*height)
}

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  4. far2cel <- function(far) {
(far-32)*(5/9)
}

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  5. distance <- function(x1,y1,x2,y2) {
sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2))
}

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Vectors

  1. bmi

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  2. Boolean logic

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  3. Sub-vector selection

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  4. DAT[POS]

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  5. scalprod <- function(u,v) {
sum(u*v)
}

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