[R]變更y軸數值方向

1.las可以變更軸的數字方向

axis(2, at = seq(0,300,50), labels = seq(0,300,50), las=2)

2.bty="n" 則不顯示文字方塊外框

legend(6.8, 255, "Zolendronic acid", cex = 2/3, bty="n")

3.arrows可以在圖上畫箭頭符號

arrows(7.25,260,7.05,285, length = 0.1)

4.rug可以在圖軸上,加上標記

rug(out.mean, side=1,lwd = 1)

EX :