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並前往https://stackoverflow.com/questions/34984537/vector-recycling-is-not-working-when-assigning-to-data-frame

Vector recycling is not working when assigning to data.frame

It is because 2000 is not divisible by 7. Partial recycling doesn't work for data frame columns: d <- data.frame(x=1:10) d$x <- 1 d$x <- 1:2 ...

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