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> library(random) | |
# 関数が5つしかないシンプルなパッケージです。 | |
> ls("package:random") | |
[1] "quotaCheck" "randomNumbers" "randomQuota" | |
[4] "randomSequence" "randomStrings" | |
# randomNumbers()は重複を許した乱数列を生成します。 | |
# runif()とは違い、出力されるのは全てint型の整数です。 | |
> randomNumbers(n=20,min=1,max=100,col=5,base=10,check=TRUE) | |
V1 V2 V3 V4 V5 | |
[1,] 58 22 75 3 52 | |
[2,] 93 16 91 69 22 | |
[3,] 69 3 45 7 6 | |
[4,] 72 71 53 35 46 | |
# randomSequence()は重複を許さない乱数列を生成します。 | |
# 数列をランダムに並べ替えているということもできます。 | |
# sample()関数だとreplace=FALSEオプションに相当します。 | |
> randomSequence(min=1,max=20,col=5) | |
V1 V2 V3 V4 V5 | |
[1,] 11 1 5 9 20 | |
[2,] 18 7 2 16 6 | |
[3,] 4 10 15 13 8 | |
[4,] 12 3 19 17 14 | |
# ランダムな文字列を簡単に生成することもできます。 | |
> randomStrings(n=10,len=5,digits=TRUE,upperalpha=TRUE, | |
+ loweralpha=TRUE,unique=TRUE,check=TRUE) | |
V1 | |
[1,] "GRyft" | |
[2,] "aL38g" | |
[3,] "Q5YBi" | |
[4,] "p4tIi" | |
[5,] "sq72A" | |
[6,] "iri1D" | |
[7,] "AsOt9" | |
[8,] "F8Z8A" | |
[9,] "PZNkP" | |
[10,] "9bVxt" |
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