mydata <- data.frame(X=c("a", "b", "c", "d", "e", "f"),Y=c("m","m","m","n","n","k"), Z=c(0.01, 0.001,0.04,1.22,0.06,0.79))
我想把Z列小于0.04的对应行变成"MISS",
该怎么做呢?谢谢
楼主: pale1101256002
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[问答] 数据框匹配并替换 |
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