[英]Why use ~ between x and y axis column selections rather than the conventional plot(x,y ) in plot(x,y, xlab, ylab) seen in R documentation?
所以我收集到的是 ~ 將值恢復為正確的值,看看高度最初是如何在 10 年代和后來在 100 年代。 然而,同樣可以通過下面的III)來實現。 看起來像是一些額外的不必要的功能。 在什么情況下這會有所幫助,值得將其內置。
I)plot(survey$Height~survey$Wr.Hnd, xlab="Writing Handspan (cm)", ylab = "Height (cm)")
對比
II)plot(survey$Height,survey$Wr.Hnd, xlab="Writing Handspan (cm)", ylab = "Height (cm)")
對比
III) plot(survey$Wr.Hnd,survey$Height , xlab="Writing Handspan (cm)", ylab = "Height (cm)")
部分數據:
Sex Wr.Hnd NW.Hnd W.Hnd Fold Pulse Clap Exer Smoke Height M.I Age
1 Female 18.5 18.0 Right R on L 92 Left Some Never 173.00 Metric 18.250
2 Male 19.5 20.5 Left R on L 104 Left None Regul 177.80 Imperial 17.583
3 Male 18.0 13.3 Right L on R 87 Neither None Occas NA <NA> 16.917
4 Male 18.8 18.9 Right R on L NA Neither None Never 160.00 Metric 20.333
5 Male 20.0 20.0 Right Neither 35 Right Some Never 165.00 Metric 23.667
6 Female 18.0 17.7 Right L on R 64 Right Some Never 172.72 Imperial 21.000
7 Male 17.7 17.7 Right L on R 83 Right Freq Never 182.88 Imperial 18.833
8 Female 17.0 17.3 Right R on L 74 Right Freq Never 157.00 Metric 35.833
9 Male 20.0 19.5 Right R on L 72 Right Some Never 175.00 Metric 19.000
10 Male 18.5 18.5 Right R on L 90 Right Some Never 167.00 Metric 22.333
當指定data
參數時,主要應用程序將是為了簡潔/可讀性:
plot(Height~Wr.Hnd, data=survey, ...)
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.