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# sample

Sampling with replacement

### Calling Sequence

s = sample(n,X,orient)

### Arguments

- n
positive integer (size of sample)

- X
matrix. Samples will be extracted from this matrix.

- orient
Optional parameter. Admissible values are 1, 2, 'r' or 'c'

- s
vector or matrix containing sample

### Description

This function gives a vector (or matrix) nx1. It contains a random sample of n extractions, with replacement, from the matrix X.

s=sample(n,X) (or s=sample(n,X,'*')) returns a vector s whose values are a random sample of n values from X, extracted with replacement, from X .

s=sample(n,X,'r') (or, equivalently, s=sample(n,X,1)) returns a matrix of type size(X,'r')xn. It contains a random sample of n rows, extracted with replacement, from the rows of X.

s=sample(n,X,'c') (or, equivalently, s=sample(n,X,2)) returns a matrix of type nxsize(X,'c'). It contains a random sample of n columns, extracted with replacement from the columns of X.

### Examples

X=['a' 'dd' 'arreu'; 'ber' 'car' 'zon'] s=sample(25,X) s=sample(25,X,'r') s=sample(25,X,'c')

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