我有一个数据集，我试图按其中一个变量的升序重新排列。我必须创建一个函数来提供成功完成的新变量的条目，但是当我试图安排它时，控制台会出现以下错误：
错误：大小不正确（1），期待：1515
我已尝试更改新列的制作方式，并尝试重新安排，但它再次出现同样的错误！
以下是我写的代码：
# Add a variable which gives the distance from the centre of leeds
# Begin by creating a function which will give the distance from the centre of leeds to location of accident
distance <- function(Grid.Ref..Easting, Grid.Ref..Northing, Centre.Easting = 429967, Centre.Northing = 434260){
easting.difference <- abs(Centre.Easting - Grid.Ref..Easting)
northing.difference <- abs(Centre.Northing - Grid.Ref..Northing)
dif <- round(sqrt(easting.difference^2 + northing.difference^2),digits=2)
return(dif)
}
# use this function to now create a new column which shows the distance of the accident from the cente of Leeds
accident4 <- mutate(accident3,
"Distance.from.centre.of.Leeds" = distance(Grid.Ref..Easting, Grid.Ref..Northing, Centre.Easting = 429967, Centre.Northing = 434260)
)
# arrange the data in order of distance from the centre of Leeds in ascending order
accident5 <- arrange(accident4, "Distance.from.centre.of.Leeds")