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sample函數(shù)獲得的數(shù)據(jù)框?yàn)楹蜗旅媸?ldquo;+”號(hào)?而且eyecolor變量不能看?

> sample(eye.color,100,rep=T)

? [1] "bb" "aa" "cc" "dd" "cc" "cc" "bb" "dd" "cc" "cc" "dd" "bb" "cc" "dd" "cc"

?[16] "aa" "cc" "aa" "aa" "bb" "aa" "cc" "aa" "bb" "bb" "dd" "cc" "bb" "dd" "dd"

?[31] "dd" "dd" "cc" "cc" "dd" "aa" "dd" "aa" "cc" "aa" "cc" "aa" "dd" "dd" "cc"

?[46] "aa" "bb" "dd" "cc" "bb" "bb" "dd" "cc" "bb" "bb" "aa" "bb" "aa" "dd" "dd"

?[61] "aa" "aa" "aa" "cc" "bb" "aa" "cc" "bb" "bb" "bb" "aa" "bb" "dd" "aa" "aa"

?[76] "aa" "aa" "aa" "cc" "dd" "aa" "bb" "cc" "dd" "dd" "bb" "bb" "dd" "aa" "bb"

?[91] "bb" "aa" "dd" "cc" "cc" "bb" "bb" "dd" "dd" "bb"

> eyecolor<-data.frame(id=1:100,color=sample(eye.color,100,rep=T)? ?#sample函數(shù)獲得的數(shù)據(jù)框?yàn)楹蜗旅媸恰?”號(hào)?

+?

+?

+?

+?

+?

+?


> eyecolor

Error: object 'eyecolor' not found


正在回答

1 回答

+說(shuō)明你的語(yǔ)句沒(méi)有寫(xiě)完整啊。。??

你自己看下,data.frame后面的括號(hào),在語(yǔ)句最后并沒(méi)有完整封閉。。就是語(yǔ)句最后面漏了個(gè)括號(hào)

1 回復(fù) 有任何疑惑可以回復(fù)我~

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sample函數(shù)獲得的數(shù)據(jù)框?yàn)楹蜗旅媸?ldquo;+”號(hào)?而且eyecolor變量不能看?

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