爲什麼我的x軸的第一個字符不會顯示在圖中？

Question

我希望我的x軸顯示範圍0到6（共7個刻度）。我輸入以下數據，但第一個字符不顯示 - 所以最後的刻度沒有標籤，並且0不出現。 （我試圖用一個非零數字開始和仍然沒有工作，所以我知道這不是問題！） 我的編碼是這樣的：

x=0:6 

probdist = dhyper(x,6,30,6) 

plot(probdist, main="Probability Distribution Function", xlab = "Amount of Numbers Matched", ylab="Probability of Amount of Numbers Matched", xaxt = "n") 

lab = c("0","1","2","3","4","5","6") 

axis(side=1, at = x, labels = lab) 

我怎樣才能獲得x-axis展示它的範圍從0到6？只是用plot功能，具有xaxt = "n"取出，結果範圍爲1至7

Answer 1

簡短的回答：加入xlim=range(x)您plot功能，你是好去。

x=0:6 

set.seed(1234) 
probdist = dhyper(x,6,30,6) 

plot(probdist, main="Probability Distribution Function", xlab = "Amount of Numbers Matched", 
    ylab="Probability of Amount of Numbers Matched", xaxt = "n", xlim=range(x)) 

lab = c("0","1","2","3","4","5","6") 

axis(side=1, at = x, labels = lab) 

這將返回

的原因，axis功能不加0是由於該地塊已經被創建，它只是修改現有的情節。